1
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Song S, Rahaman M, Jariwala D. Can 2D Semiconductors Be Game-Changers for Nanoelectronics and Photonics? ACS NANO 2024; 18:10955-10978. [PMID: 38625032 DOI: 10.1021/acsnano.3c12938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
2D semiconductors have interesting physical and chemical attributes that have led them to become one of the most intensely investigated semiconductor families in recent history. They may play a crucial role in the next technological revolution in electronics as well as optoelectronics or photonics. In this Perspective, we explore the fundamental principles and significant advancements in electronic and photonic devices comprising 2D semiconductors. We focus on strategies aimed at enhancing the performance of conventional devices and exploiting important properties of 2D semiconductors that allow fundamentally interesting device functionalities for future applications. Approaches for the realization of emerging logic transistors and memory devices as well as photovoltaics, photodetectors, electro-optical modulators, and nonlinear optics based on 2D semiconductors are discussed. We also provide a forward-looking perspective on critical remaining challenges and opportunities for basic science and technology level applications of 2D semiconductors.
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Affiliation(s)
- Seunguk Song
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Mahfujur Rahaman
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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2
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Chen CA, Chen PH, Zheng YX, Chen CH, Hsu MK, Hsu KC, Lai YY, Chuu CS, Deng H, Lee YH. Tunable Single-Photon Emission with Wafer-Scale Plasmonic Array. NANO LETTERS 2024; 24:3395-3403. [PMID: 38359157 PMCID: PMC10958497 DOI: 10.1021/acs.nanolett.3c05155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
Bright, scalable, and deterministic single-photon emission (SPE) is essential for quantum optics, nanophotonics, and optical information systems. Recently, SPE from hexagonal boron nitride (h-BN) has attracted intense interest because it is optically active and stable at room temperature. Here, we demonstrate a tunable quantum emitter array in h-BN at room temperature by integrating a wafer-scale plasmonic array. The transient voltage electrophoretic deposition (EPD) reaction is developed to effectively enhance the filling of single-crystal nanometals in the designed patterns without aggregation, which ensures the fabricated array for tunable performances of these single-photon emitters. An enhancement of ∼500% of the SPE intensity of the h-BN emitter array is observed with a radiative quantum efficiency of up to 20% and a saturated count rate of more than 4.5 × 106 counts/s. These results suggest the integrated h-BN-plasmonic array as a promising platform for scalable and controllable SPE photonics at room temperature.
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Affiliation(s)
- Chun-An Chen
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Po-Han Chen
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Xiang Zheng
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chiao-Han Chen
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Mong-Kai Hsu
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kai-Chieh Hsu
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Ying-Yu Lai
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
- Department
of Physics, University of Michigan, Ann Arbor, Michigan 48109-2122, United
States
| | - Chih-Sung Chuu
- Department
of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hui Deng
- Department
of Physics, University of Michigan, Ann Arbor, Michigan 48109-2122, United
States
| | - Yi-Hsien Lee
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
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3
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Qi M, Tong T, Fan X, Li X, Wang S, Zhang G, Chen R, Hu J, Yang Z, Zeng G, Qin C, Xiao L, Jia S. Anomalous layer-dependent photoluminescence spectra of supertwisted spiral WS 2. OPTICS EXPRESS 2024; 32:10419-10428. [PMID: 38571254 DOI: 10.1364/oe.516177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/21/2024] [Indexed: 04/05/2024]
Abstract
Twisted stacking of two-dimensional materials with broken inversion symmetry, such as spiral MoTe2 nanopyramids and supertwisted spiral WS2, emerge extremely strong second- and third-harmonic generation. Unlike well-studied nonlinear optical effects in these newly synthesized layered materials, photoluminescence (PL) spectra and exciton information involving their optoelectronic applications remain unknown. Here, we report layer- and power-dependent PL spectra of the supertwisted spiral WS2. The anomalous layer-dependent PL evolutions that PL intensity almost linearly increases with the rise of layer thickness have been determined. Furthermore, from the power-dependent spectra, we find the power exponents of the supertwisted spiral WS2 are smaller than 1, while those of the conventional multilayer WS2 are bigger than 1. These two abnormal phenomena indicate the enlarged interlayer spacing and the decoupling interlayer interaction in the supertwisted spiral WS2. These observations provide insight into PL features in the supertwisted spiral materials and may pave the way for further optoelectronic devices based on the twisted stacking materials.
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4
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Zhang W, Kong C, Zhang X, Wang Q, Xue W. Surface plasmon enhancement in silver nanowires and bilayer two-dimensional materials. NANOSCALE 2024; 16:4275-4280. [PMID: 38349082 DOI: 10.1039/d3nr05810g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
In order to improve the low light absorption of two-dimensional (2D) transition metal dichalcogenides (TMDCs), surface plasmon (SP) nanostructures have been widely studied. However, the impact of interlayer twist on such nanostructures has rarely been studied. Here, we construct two different composite structures of silver nanowires (Ag NWs) and pristine bilayer MoS2 (pBLM) or twisted bilayer MoS2 (tBLM). The interlayer twist can further promote the light utilization of MoS2, resulting in an ∼4-fold higher spectral enhancement in Ag/tBLM than that in Ag/pBLM. In addition, the photocurrent and detectivity of the phototransistor based on the Ag/tBLM composite structure were improved by 7-fold and ∼100-fold, respectively, compared to those of the Ag/pBLM phototransistor. Theoretical simulations show that the enhancement of photocurrent can be attributed to the enhancement of the local electric field at the interface between Ag NWs and the tBLM film, which is called the 'hot spot'. These results provide a reference for understanding the modulation mechanism of SPs and interlayer twist on the optoelectronic properties of 2D materials.
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Affiliation(s)
- Weibin Zhang
- Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Cunwei Kong
- Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Xinfeng Zhang
- Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China.
- Jiangsu Zorrun Semiconductor Co., Ltd, Nantong 226500, China
| | - Quan Wang
- Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China.
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Wei Xue
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, P.R. China.
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5
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Tran TH, Rodriguez RD, Villa NE, Shchadenko S, Averkiev A, Hou Y, Zhang T, Matkovic A, Sheremet E. Laser-Induced photothermal activation of multilayer MoS 2 with spatially controlled catalytic activity. J Colloid Interface Sci 2024; 654:114-123. [PMID: 37837848 DOI: 10.1016/j.jcis.2023.10.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 09/28/2023] [Accepted: 10/07/2023] [Indexed: 10/16/2023]
Abstract
This study investigates the effects of high-power laser irradiation on multilayer MoS2, a promising material for catalysis, optoelectronics, and energy applications. In addition to previously reported sculpting of MoS2 layers, we discovered a novel effect of laser-induced photothermal heating that drives the chemical activation of MoS2. The photothermal effect was confirmed by temperature-dependent experiments, in situ temperature measurements with nanolocalized probes, and simulations. Remarkably, we observed the reduction of Ag+ ions on laser-irradiated MoS2 layers, forming plasmonic nanostructures without external stimuli such as photons or chemical reducing agents. We attribute this phenomenon to the significant defect density within the laser-carved region and the surrounding area induced by photothermal effects. Further functionalization of the laser-modified MoS2 with 4-nitrobenzenethiol self-assembled monolayers demonstrated a significant increase in photocatalytic activity, close to 100% yield compared to the negligible activity of pristine material. Our findings contribute to a deeper understanding of the light-induced modification of MoS2 properties and introduce a novel method for spatially controlling the chemical activation of MoS2. This advancement holds significant potential in developing high-performance 2D semiconductors as nano-engineered catalytic materials.
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Affiliation(s)
- Tuan-Hoang Tran
- Tomsk Polytechnic University, Lenin ave. 30, Tomsk 634050, Russia
| | - Raul D Rodriguez
- Tomsk Polytechnic University, Lenin ave. 30, Tomsk 634050, Russia.
| | - Nelson E Villa
- Tomsk Polytechnic University, Lenin ave. 30, Tomsk 634050, Russia
| | | | - Andrey Averkiev
- Tomsk Polytechnic University, Lenin ave. 30, Tomsk 634050, Russia
| | - Yang Hou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Aleksandar Matkovic
- Chair of Physics, Department Physics, Mechanics and Electrical Engineering, Montanuniversität Leoben, Leoben, Austria
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6
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Ding S, Liu C, Li Z, Lu Z, Tao Q, Lu D, Chen Y, Tong W, Liu L, Li W, Ma L, Yang X, Xiao Z, Wang Y, Liao L, Liu Y. Ag-Assisted Dry Exfoliation of Large-Scale and Continuous 2D Monolayers. ACS NANO 2024; 18:1195-1203. [PMID: 38153837 DOI: 10.1021/acsnano.3c11573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Two-dimensional (2D) semiconductors have generated considerable attention for high-performance electronics and optoelectronics. However, to date, it is still challenging to mechanically exfoliate large-area and continuous monolayers while retaining their intrinsic properties. Here, we report a simple dry exfoliation approach to produce large-scale and continuous 2D monolayers by using a Ag film as the peeling tape. Importantly, the conducting Ag layer could be converted into AgOx nanoparticles at low annealing temperature, directly decoupling the conducting Ag with the underlayer 2D monolayers without involving any solution or etching process. Electrical characterization of the monolayer MoS2 transistor shows a decent carrier mobility of 42 cm2 V-1 s-1 and on-state current of 142 μA/μm. Finally, a plasmonic enhancement photodetector could be simultaneously realized due to the direct formation of Ag nanoparticles arrays on MoS2 monolayers, without complex approaches for nanoparticle synthesis and integration processes, demonstrating photoresponsivity and detectivity of 6.3 × 105 A/W and 2.3 × 1013 Jones, respectively.
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Affiliation(s)
- Shuimei Ding
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Chang Liu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Zhiwei Li
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Zheyi Lu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Quanyang Tao
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Donglin Lu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yang Chen
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Wei Tong
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Liting Liu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Wanying Li
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Likuan Ma
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Xiaokun Yang
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Zhaojing Xiao
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yiliu Wang
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Lei Liao
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yuan Liu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
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7
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Anand V S A, Sahoo MK, Mujeeb F, Varghese A, Dhar S, Lodha S, Kumar A. Novel Nano-Electroplating-Based Plasmonic Platform for Giant Emission Enhancement in Monolayer Semiconductors. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 38044673 DOI: 10.1021/acsami.3c11564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Two-dimensional semiconductors such as monolayer MoS2 have attracted considerable attention owing to their exceptional electronic and optical characteristics. However, their practical application has been hindered by the limited light absorption resulting from atomically thin thickness and low quantum yield. A highly effective approach to address these limitations is by integrating subwavelength plasmonic nanostructures with monolayer semiconductors. In this study, we employed electron beam lithography and nanoelectroplating techniques to develop a gold nanodisc (AuND) array plasmonic platform. Monolayer MoS2 transferred on top of the AuND array yields up to 150-fold photoluminescence enhancement compared to a gold film without normalization with respect to plasmonic hot spots. In addition, the unique protocol of nanoelectroplating helps to get flat-top cylindrical discs which enable less tear during the delicate wet transfer of monolayer MoS2. We explain our experimental findings based on electromagnetic simulations.
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Affiliation(s)
- Abhay Anand V S
- Laboratory of Optics of Quantum Materials (LOQM), Department of Physics, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Mihir Kumar Sahoo
- Laboratory of Optics of Quantum Materials (LOQM), Department of Physics, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Faiha Mujeeb
- Department of Physics, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Abin Varghese
- Department of Electrical Engineering, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Subhabrata Dhar
- Department of Physics, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Saurabh Lodha
- Department of Electrical Engineering, IIT Bombay, Mumbai 400076, Maharashtra, India
| | - Anshuman Kumar
- Laboratory of Optics of Quantum Materials (LOQM), Department of Physics, IIT Bombay, Mumbai 400076, Maharashtra, India
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8
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Ramò L, Giordano MC, Ferrando G, Canepa P, Telesio F, Repetto L, Buatier de Mongeot F, Canepa M, Bisio F. Thermal Scanning-Probe Lithography for Broad-Band On-Demand Plasmonic Nanostructures on Transparent Substrates. ACS APPLIED NANO MATERIALS 2023; 6:18623-18631. [PMID: 37854851 PMCID: PMC10580238 DOI: 10.1021/acsanm.3c04398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/20/2023]
Abstract
Thermal scanning-probe lithography (t-SPL) is a high-resolution nanolithography technique that enables the nanopatterning of thermosensitive materials by means of a heated silicon tip. It does not require alignment markers and gives the possibility to assess the morphology of the sample in a noninvasive way before, during, and after the patterning. In order to exploit t-SPL at its peak performances, the writing process requires applying an electric bias between the scanning hot tip and the sample, thereby restricting its application to conductive, optically opaque, substrates. In this work, we show a t-SPL-based method, enabling the noninvasive high-resolution nanolithography of photonic nanostructures onto optically transparent substrates across a broad-band visible and near-infrared spectral range. This was possible by intercalating an ultrathin transparent conductive oxide film between the dielectric substrate and the sacrificial patterning layer. This way, nanolithography performances comparable with those typically observed on conventional semiconductor substrates are achieved without significant changes of the optical response of the final sample. We validated this innovative nanolithography approach by engineering periodic arrays of plasmonic nanoantennas and showing the capability to tune their plasmonic response over a broad-band visible and near-infrared spectral range. The optical properties of the obtained systems make them promising candidates for the fabrication of hybrid plasmonic metasurfaces supported onto fragile low-dimensional materials, thus enabling a variety of applications in nanophotonics, sensing, and thermoplasmonics.
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Affiliation(s)
- Lorenzo Ramò
- OptMatLab,
Dipartimento di Fisica, Università
di Genova, Via Dodecaneso 33, I-16146 Genova, Italy
| | - Maria Caterina Giordano
- LabNano,
Dipartimento di Fisica, Università
di Genova, Via Dodecaneso
33, I-16146 Genova, Italy
| | - Giulio Ferrando
- LabNano,
Dipartimento di Fisica, Università
di Genova, Via Dodecaneso
33, I-16146 Genova, Italy
| | - Paolo Canepa
- OptMatLab,
Dipartimento di Fisica, Università
di Genova, Via Dodecaneso 33, I-16146 Genova, Italy
| | - Francesca Telesio
- Dipartimento
di Fisica, Università di Genova, Via Dodecaneso 33, I-16146 Genova, Italy
| | - Luca Repetto
- Nanomed
Laboratories, Dipartimento di Fisica, Università
di Genova, Via Dodecaneso
33, I-16146 Genova, Italy
| | | | - Maurizio Canepa
- OptMatLab,
Dipartimento di Fisica, Università
di Genova, Via Dodecaneso 33, I-16146 Genova, Italy
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9
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Asaithambi A, Kazemi Tofighi N, Ghini M, Curreli N, Schuck PJ, Kriegel I. Energy transfer and charge transfer between semiconducting nanocrystals and transition metal dichalcogenide monolayers. Chem Commun (Camb) 2023; 59:7717-7730. [PMID: 37199319 PMCID: PMC10281493 DOI: 10.1039/d3cc01125a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/02/2023] [Indexed: 05/19/2023]
Abstract
Nowadays, as a result of the emergence of low-dimensional hybrid structures, the scientific community is interested in their interfacial carrier dynamics, including charge transfer and energy transfer. By combining the potential of transition metal dichalcogenides (TMDs) and nanocrystals (NCs) with low-dimensional extension, hybrid structures of semiconducting nanoscale matter can lead to fascinating new technological scenarios. Their characteristics make them intriguing candidates for electronic and optoelectronic devices, like transistors or photodetectors, bringing with them challenges but also opportunities. Here, we will review recent research on the combined TMD/NC hybrid system with an emphasis on two major interaction mechanisms: energy transfer and charge transfer. With a focus on the quantum well nature in these hybrid semiconductors, we will briefly highlight state-of-the-art protocols for their structure formation and discuss the interaction mechanisms of energy versus charge transfer, before concluding with a perspective section that highlights novel types of interactions between NCs and TMDs.
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Affiliation(s)
- Aswin Asaithambi
- Functional Nanosystems, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy.
| | - Nastaran Kazemi Tofighi
- Functional Nanosystems, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy.
| | - Michele Ghini
- Functional Nanosystems, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy.
- Nanoelectronic Devices Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Nicola Curreli
- Functional Nanosystems, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy.
| | - P James Schuck
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - Ilka Kriegel
- Functional Nanosystems, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy.
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10
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Gartman AD, Shorokhov AS, Fedyanin AA. Efficient Light Coupling and Purcell Effect Enhancement for Interlayer Exciton Emitters in 2D Heterostructures Combined with SiN Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1821. [PMID: 37368251 DOI: 10.3390/nano13121821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/08/2023] [Accepted: 06/06/2023] [Indexed: 06/28/2023]
Abstract
Optimal design of a silicon nitride waveguide structure composed of resonant nanoantennas for efficient light coupling with interlayer exciton emitters in a MoSe2-WSe2 heterostructure is proposed. Numerical simulations demonstrate up to eight times coupling efficiency improvement and twelve times Purcell effect enhancement in comparison with a conventional strip waveguide. Achieved results can be beneficial for development of on-chip non-classical light sources.
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Affiliation(s)
- Alexandra D Gartman
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | | | - Andrey A Fedyanin
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
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11
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Alves E, Péchou R, Coratger R, Mlayah A. Gap plasmon modes and plasmon-exciton coupling in a hybrid Au/MoSe 2/Au tunneling junction. OPTICS EXPRESS 2023; 31:12549-12561. [PMID: 37157412 DOI: 10.1364/oe.479620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The light-matter interaction between plasmonic nanocavity modes and excitons at the nanometer scale is here addressed in the scanning tunneling microscope configuration where an MoSe2 monolayer is located between the tip and the substrate. We investigate by optical excitation the electromagnetic modes of this hybrid Au/MoSe2/Au tunneling junction using numerical simulations where electron tunneling and the anisotropic character of the MoSe2 layer are taken into account. In particular, we pointed out gap plasmon modes and Fano-type plasmon-exciton coupling taking place at the MoSe2/Au substrate interface. The spectral properties and spatial localization of these modes are studied as a function of the tunneling parameters and incident polarization.
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12
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Song J, Jiang C, Liu Z, Yang Z, Wang Z, Jiang Q, Ruuskanen P. Drastic performance enhancement of photoluminescence and water electrolysis by local-magnetic-field-assisted LSPR of Ag NPs and NCs. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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13
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Gan X, Lei D. Plasmonic-metal/2D-semiconductor hybrids for photodetection and photocatalysis in energy-related and environmental processes. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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14
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Lin H, Zhang Z, Zhang H, Lin KT, Wen X, Liang Y, Fu Y, Lau AKT, Ma T, Qiu CW, Jia B. Engineering van der Waals Materials for Advanced Metaphotonics. Chem Rev 2022; 122:15204-15355. [PMID: 35749269 DOI: 10.1021/acs.chemrev.2c00048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The outstanding chemical and physical properties of 2D materials, together with their atomically thin nature, make them ideal candidates for metaphotonic device integration and construction, which requires deep subwavelength light-matter interaction to achieve optical functionalities beyond conventional optical phenomena observed in naturally available materials. In addition to their intrinsic properties, the possibility to further manipulate the properties of 2D materials via chemical or physical engineering dramatically enhances their capability, evoking new science on light-matter interaction, leading to leaped performance of existing functional devices and giving birth to new metaphotonic devices that were unattainable previously. Comprehensive understanding of the intrinsic properties of 2D materials, approaches and capabilities for chemical and physical engineering methods, the resulting property modifications and novel functionalities, and applications of metaphotonic devices are provided in this review. Through reviewing the detailed progress in each aspect and the state-of-the-art achievement, insightful analyses of the outstanding challenges and future directions are elucidated in this cross-disciplinary comprehensive review with the aim to provide an overall development picture in the field of 2D material metaphotonics and promote rapid progress in this fast emerging and prosperous field.
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Affiliation(s)
- Han Lin
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,The Australian Research Council (ARC) Industrial Transformation Training, Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Zhenfang Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China
| | - Huihui Zhang
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Keng-Te Lin
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Xiaoming Wen
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Yao Liang
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Yang Fu
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Alan Kin Tak Lau
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Baohua Jia
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,The Australian Research Council (ARC) Industrial Transformation Training, Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.,Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
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15
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Lee YS, Abedini Dereshgi S, Hao S, Cheng M, Shehzad MA, Wolverton C, Aydin K, Dos Reis R, Dravid VP. Probing the Optical Response and Local Dielectric Function of an Unconventional Si@MoS 2 Core-Shell Architecture. NANO LETTERS 2022; 22:4848-4853. [PMID: 35675212 DOI: 10.1021/acs.nanolett.2c01221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Heterostructures of optical cavities and quantum emitters have been highlighted for enhanced light-matter interactions. A silicon nanosphere, core, and MoS2, shell, structure is one such heterostructure referred to as the core@shell architecture. However, the complexity of the synthesis and inherent difficulties to locally probe this architecture have resulted in a lack of information about its localized features limiting its advances. Here, we utilize valence electron energy loss spectroscopy (VEELS) to extract spatially resolved dielectric functions of Si@MoS2 with nanoscale spatial resolution corroborated with simulations. A hybrid electronic critical point is identified ∼3.8 eV for Si@MoS2. The dielectric functions at the Si/MoS2 interface is further probed with a cross-sectioned core-shell to assess the contribution of each component. Various optical parameters can be defined via the dielectric function. Hence, the methodology and evolution of the dielectric function herein reported provide a platform for exploring other complex photonic nanostructures.
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Affiliation(s)
- Yea-Shine Lee
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Sina Abedini Dereshgi
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Shiqiang Hao
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew Cheng
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Muhammad Arslan Shehzad
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Christopher Wolverton
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Koray Aydin
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Roberto Dos Reis
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology (IIN), Northwestern University, Evanston, Illinois 60208, United States
| | - Vinayak P Dravid
- Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology (IIN), Northwestern University, Evanston, Illinois 60208, United States
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16
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Tanwar M, Bansal L, Rani C, Rani S, Kandpal S, Ghosh T, Pathak DK, Sameera I, Bhatia R, Kumar R. Fano-Type Wavelength-Dependent Asymmetric Raman Line Shapes from MoS 2 Nanoflakes. ACS PHYSICAL CHEMISTRY AU 2022; 2:417-422. [PMID: 36855687 PMCID: PMC9955271 DOI: 10.1021/acsphyschemau.2c00021] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Excitation wavelength-dependent Raman spectroscopy has been carried out to study electron-phonon interaction (Fano resonance) in multi-layered bulk 2H-MoS2 nano-flakes. The electron-phonon coupling is proposed to be caused due to interaction between energy of an excitonic quasi-electronic continuum and the discrete one phonon, first-order Raman modes of MoS2. It is proposed that an asymmetrically broadened Raman line shape obtained by 633 nm laser excitation is due to electron-phonon interaction whose electronic continuum is provided by the well-known A and B excitons. Typical wavelength-dependent Raman line shape has been observed, which validates and quantifies the Fano interaction present in the samples. The experimentally obtained Raman scattering data show very good agreement with the theoretical Fano-Raman line-shape functions and help in estimating the coupling strength. Values of the electron-phonon interaction parameter obtained, through line-shape fitting, for the two excitation wavelengths have been compared and shown to have generic Fano-type dependence on the excitation wavelength.
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Affiliation(s)
- Manushree Tanwar
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Love Bansal
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Chanchal Rani
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Sonam Rani
- Department
of Physics, Guru Jambheshwar University
of Science & Technology, Hisar 125001, India
| | - Suchita Kandpal
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Tanushree Ghosh
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Devesh K. Pathak
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - I. Sameera
- Department
of Physics, Guru Jambheshwar University
of Science & Technology, Hisar 125001, India
| | - Ravi Bhatia
- Department
of Physics, Guru Jambheshwar University
of Science & Technology, Hisar 125001, India
| | - Rajesh Kumar
- Materials
and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India,Centre
for Indian Scientific Knowledge Systems, Indian Institute of Technology Indore, Simrol, Indore 453552, India,Centre
for Advanced Electronics, Indian Institute
of Technology Indore, Simrol, Indore 453552, India,
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17
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You Q, Li Z, Li Y, Qiu L, Bi X, Zhang L, Zhang D, Fang Y, Wang P. Resonance Photoluminescence Enhancement of Monolayer MoS 2 via a Plasmonic Nanowire Dimer Optical Antenna. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23756-23764. [PMID: 35575696 DOI: 10.1021/acsami.2c02684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional transition-metal dichalcogenides (TMDs) such as monolayer MoS2 exhibit remarkable optical properties. However, the intrinsic absorption and emission rates of MoS2 are very low, thus severely hindering its application in electronics and photonics. Combining MoS2 with a plasmonic optical antenna is an alternative solution to enhance the emission rates of the 2D semiconductor, and this can drastically increase the photoresponsivity of the corresponding photodetector. Herein, we have constructed a plasmonic gap cavity of a nanowire dimer (NWD) system as an optical antenna to brighten the emission of MoS2 off the hot spot. Different from the conventional enhancement concept which occurred in the plasmonic hot spot, the light emission off the nanogap hot spot was thoroughly investigated. We demonstrate that this new plasmonic optical nanostructure leads to a strong enhancement due to the Purcell effect. The NWD optical antenna can trap light to the near field through a high-efficiency plasmonic gap mode (PGM); then the PL emission was enhanced drastically up to 14.5-fold due to the resonance of the plasmonic gap mode (PGM) in the NWD with the excitonic band of monolayer MoS2. Theoretical simulations reveal that this NWD can alter the efficiency of convergence and excitation, which was consistent with our experimental results. This study can provide a pathway toward enhancing and controlling PGM-enhanced light emission of TMD materials beyond the plasmonic hot spot.
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Affiliation(s)
- Qingzhang You
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Ze Li
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Yang Li
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Lilong Qiu
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Xinxin Bi
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Lisheng Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Duan Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
- Elementary Educational College, Capital Normal University, Beijing 100048, People's Republic of China
| | - Yan Fang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
| | - Peijie Wang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University, Beijing 100048, People's Republic of China
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18
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Lu D, Chen Y, Kong L, Luo C, Lu Z, Tao Q, Song W, Ma L, Li Z, Li W, Liu L, Li Q, Yang X, Li J, Li J, Duan X, Liao L, Liu Y. Strain-Plasmonic Coupled Broadband Photodetector Based on Monolayer MoS 2. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107104. [PMID: 35174957 DOI: 10.1002/smll.202107104] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/15/2022] [Indexed: 06/14/2023]
Abstract
2D Semiconductors are promising in the development of next-generation photodetectors. However, the performances of 2D photodetectors are largely limited by their poor light absorption (due to ultrathin thickness) and small detection range (due to large bandgap). To overcome the limitations, a strain-plasmonic coupled 2D photodetector is designed by mechanically integrating monolayer MoS2 on top of prefabricated Au nanoparticle arrays. Within this structure, the large biaxial tensile strain can greatly reduce the MoS2 bandgap for broadband photodetection, and at the same time, the nanoparticles can significantly enhance the light intensity around MoS2 with much improved light absorption. Together, the strain-plasmonic coupled photodetector can broaden the detection range by 60 nm and increase the signal-to-noise ratio by 650%, representing the ultimate optimization of detection range and detection intensity at the same time. The strain-plasmonic coupling effect is further systematically characterized and confirmed by using Raman and photoluminescence spectrophotometry. Furthermore, the existence of built-in potential and photo-switching behavior is demonstrated between the strained and unstrained region, constructing a self-powered homojunction photodetector. This approach provides a simple strategy to couple strain effect and plasmonic effect, which can provide a new strategy for designing high-performance and broadband 2D optoelectronic devices.
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Affiliation(s)
- Donglin Lu
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Yang Chen
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Lingan Kong
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Chaobo Luo
- Hunan Key Laboratory for Micro/Nano Energy Materials and Devices, School of Physics and Optoelectronics, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Zheyi Lu
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Quanyang Tao
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Wenjing Song
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Likuan Ma
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Zhiwei Li
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Wanying Li
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Liting Liu
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Qianyuan Li
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Xiangdong Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jun Li
- Hunan Key Laboratory for Micro/Nano Energy Materials and Devices, School of Physics and Optoelectronics, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Jia Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xidong Duan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Lei Liao
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Yuan Liu
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
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19
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Chen CY, Chien CY, Wang CM, Lin RS, Chen IC. Plasmon Tuning of Liquid Gallium Nanoparticles through Surface Anodization. MATERIALS 2022; 15:ma15062145. [PMID: 35329596 PMCID: PMC8948849 DOI: 10.3390/ma15062145] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 02/04/2023]
Abstract
In this work, tunable plasmonic liquid gallium nanoparticles (Ga NPs) were prepared through surface anodizing of the particles. Shape deformation of the Ga NPs accompanied with dimpled surface topographies could be induced during electrochemical anodization, and the formation of the anodic oxide shell helps maintain the resulting change in the particle shape. The nanoscale dimple-like textures led to changes in the localized surface plasmon resonance (LSPR) wavelength. A maximal LSPR red-shift of ~77 nm was preliminarily achieved using an anodization voltage of 0.7 V. The experimental results showed that an increase in the oxide shell thickness yielded a negligible difference in the observed LSPR, and finite-difference time-domain (FDTD) simulations also suggested that the LSPR tunability was primarily determined by the shape of the deformed particles. The extent of particle deformation could be adjusted in a very short period of anodization time (~7 s), which offers an efficient way to tune the LSPR response of Ga NPs.
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Affiliation(s)
- Chih-Yao Chen
- Institute of Materials Science and Engineering, National Central University, Zhongli 320, Taiwan; (C.-Y.C.); (C.-Y.C.)
| | - Ching-Yun Chien
- Institute of Materials Science and Engineering, National Central University, Zhongli 320, Taiwan; (C.-Y.C.); (C.-Y.C.)
| | - Chih-Ming Wang
- Department of Optics and Photonics, National Central University, Zhongli 320, Taiwan; (C.-M.W.); (R.-S.L.)
| | - Rong-Sheng Lin
- Department of Optics and Photonics, National Central University, Zhongli 320, Taiwan; (C.-M.W.); (R.-S.L.)
| | - I-Chen Chen
- Institute of Materials Science and Engineering, National Central University, Zhongli 320, Taiwan; (C.-Y.C.); (C.-Y.C.)
- Correspondence:
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20
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Huang L, Krasnok A, Alú A, Yu Y, Neshev D, Miroshnichenko AE. Enhanced light-matter interaction in two-dimensional transition metal dichalcogenides. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2022; 85:046401. [PMID: 34939940 DOI: 10.1088/1361-6633/ac45f9] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 12/16/2021] [Indexed: 05/27/2023]
Abstract
Two-dimensional (2D) transition metal dichalcogenide (TMDC) materials, such as MoS2, WS2, MoSe2, and WSe2, have received extensive attention in the past decade due to their extraordinary electronic, optical and thermal properties. They evolve from indirect bandgap semiconductors to direct bandgap semiconductors while their layer number is reduced from a few layers to a monolayer limit. Consequently, there is strong photoluminescence in a monolayer (1L) TMDC due to the large quantum yield. Moreover, such monolayer semiconductors have two other exciting properties: large binding energy of excitons and valley polarization. These properties make them become ideal materials for various electronic, photonic and optoelectronic devices. However, their performance is limited by the relatively weak light-matter interactions due to their atomically thin form factor. Resonant nanophotonic structures provide a viable way to address this issue and enhance light-matter interactions in 2D TMDCs. Here, we provide an overview of this research area, showcasing relevant applications, including exotic light emission, absorption and scattering features. We start by overviewing the concept of excitons in 1L-TMDC and the fundamental theory of cavity-enhanced emission, followed by a discussion on the recent progress of enhanced light emission, strong coupling and valleytronics. The atomically thin nature of 1L-TMDC enables a broad range of ways to tune its electric and optical properties. Thus, we continue by reviewing advances in TMDC-based tunable photonic devices. Next, we survey the recent progress in enhanced light absorption over narrow and broad bandwidths using 1L or few-layer TMDCs, and their applications for photovoltaics and photodetectors. We also review recent efforts of engineering light scattering, e.g., inducing Fano resonances, wavefront engineering in 1L or few-layer TMDCs by either integrating resonant structures, such as plasmonic/Mie resonant metasurfaces, or directly patterning monolayer/few layers TMDCs. We then overview the intriguing physical properties of different van der Waals heterostructures, and their applications in optoelectronic and photonic devices. Finally, we draw our opinion on potential opportunities and challenges in this rapidly developing field of research.
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Affiliation(s)
- Lujun Huang
- School of Engineering and Information Technology, University of New South Wales, Canberra, ACT, 2600, Australia
| | - Alex Krasnok
- Department of Electrical and Computer Engineering, Florida International University, Miami, FL 33174, United States of America
| | - Andrea Alú
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY 10031, United States of America
- Physics Program, Graduate Center, City University of New York, New York, NY 10016, United States of America
| | - Yiling Yu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
| | - Dragomir Neshev
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia
| | - Andrey E Miroshnichenko
- School of Engineering and Information Technology, University of New South Wales, Canberra, ACT, 2600, Australia
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21
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Khatua DP, Singh A, Gurung S, Khan S, Tanwar M, Kumar R, Jayabalan J. Ultrafast carrier dynamics in a monolayer MoS 2at carrier densities well above Mott density. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:155401. [PMID: 35062012 DOI: 10.1088/1361-648x/ac4dbf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Due to the growing interest in monolayer (ML) molybdenum disulfide (MoS2) in several optoelectronic applications like lasers, detectors, sensors, it is important to understand the ultrafast behavior of the excited carriers in this material. In this article, a comprehensive study of the charge carrier dynamics of a monolayer MoS2flake has been studied using transient transmission technique near A-exciton under high excitation densities well above the Mott density. Fluence dependent studies has been carried out to understand the origin of the processes which modifies its optical response under excitation. The dissociation of excitons leads to an observed fast bandgap renormalization. At later times when large number of carriers relax the remaining carriers forms excitons leading to a bleaching effect.
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Affiliation(s)
- Durga Prasad Khatua
- Nano Science Laboratory, Materials Science Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013 India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Asha Singh
- Nano Science Laboratory, Materials Science Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013 India
| | - Sabina Gurung
- Nano Science Laboratory, Materials Science Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013 India
- Department of Physics, Institute for Quantum Electronics, ETH Zurich, 8093, Switzerland
| | - Salahuddin Khan
- Nano Science Laboratory, Materials Science Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013 India
| | - Manushree Tanwar
- Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, 453552, India
| | - Rajesh Kumar
- Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, 453552, India
| | - J Jayabalan
- Nano Science Laboratory, Materials Science Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013 India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
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22
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Shi Y, Rabbani M, Vázquez-Mayagoitia Á, Zhao J, Saidi WA. Controlling the nucleation and growth of ultrasmall metal nanoclusters with MoS 2 grain boundaries. NANOSCALE 2022; 14:617-625. [PMID: 34985076 DOI: 10.1039/d1nr07836d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The stabilization of supported nanoclusters is critical for different applications, including catalysis and plasmonics. Herein we investigate the impact of MoS2 grain boundaries (GBs) on the nucleation and growth of Pt NCs. The optimum atomic structure of the metal clusters is obtained using an adaptive genetic algorithm that employs a hybrid approach based on atomistic force fields and density functional theory. Our findings show that GBs stabilize the NCs up to a cluster size of nearly ten atoms, and with larger clusters having a similar binding to the pristine system. Notably, Pt monomers are found to be attracted to GB cores achieving 60% more stabilization compared to the pristine surface. Furthermore, we show that the nucleation and growth of the metal seeds are facile with low kinetic barriers, which are of similar magnitude to the diffusion barriers of metals on the pristine surface. The findings highlight the need to engineer ultrasmall NCs to take advantage of enhanced stabilization imparted by the GB region, particularly to circumvent sintering behavior for high-temperature applications.
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Affiliation(s)
- Yongliang Shi
- Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, 200433, China
- ICQD/Hefei National Laboratory for Physical Sciences at the Microscale, and CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Muztoba Rabbani
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
| | | | - Jin Zhao
- ICQD/Hefei National Laboratory for Physical Sciences at the Microscale, and CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wissam A Saidi
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
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23
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Ji C, Jia H, zhou C, Wang Q, Xue W. Surface plasmon enhancement in the different spatial distributions of nanowire and two-dimensional material. Phys Chem Chem Phys 2022; 24:8296-8302. [DOI: 10.1039/d1cp05982c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface plasmon (SP) nanostructures have been widely researched to improve the low light absorption of two-dimensional transition metal dichalcogenides (TMDCs). However, the impact of the different coupling forms of them,...
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24
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Garai M, Zhu Z, Shi J, Li S, Xu QH. Single-particle studies on plasmon enhanced photoluminescence of monolayer MoS 2 by gold nanoparticles of different shapes. J Chem Phys 2021; 155:234201. [PMID: 34937371 DOI: 10.1063/5.0073754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Plasmon-exciton interactions between noble metal nanostructures and two-dimensional transition metal dichalcogenides have drawn great interest due to their significantly enhanced optical properties. Plasmon resonance of noble metal nanoparticles and plasmon-exciton interactions are strongly dependent on the particle morphology. Single-particle spectroscopic studies can overcome the ensemble average effects of sample inhomogeneity to unambiguously reveal the effects of the particle morphology. In this work, plasmon modulated emission of MoS2 in various plasmon-MoS2 hybrid structures has been studied on the single-particle level. Gold (Au) nanoantennas of different shapes including nanosphere, nanorod, nanocube, and nanotriangle with similar overall dimensions, which have different sharp tips and contact areas with MoS2, have been chosen to explore the particle shape effects. Different extent of enhancement in photoluminescence (PL) of MoS2 was observed for Au nanoantennas of different shapes. It was found that Au nanotriangles gave the highest enhancement factor, while Au nanospheres gave the lowest enhancement factor. The numerical simulation results show that the dominant contribution arises from an increased quantum yield, while enhanced excitation efficiency just plays a minor role. The quantum yield enhancement is affected by both the sharp tips and contact mode of the Au nanoantenna with MoS2. Polarization of the MoS2 emission was also found to be modulated by the plasmon mode of the Au nanoantenna. These single-particle spectroscopic studies allow us to unambiguously reveal the effects of the particle morphology on plasmon enhanced PL in these nanohybrids to provide a better understanding of the plasmon-exciton interactions.
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Affiliation(s)
- Monalisa Garai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Ziyu Zhu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Jia Shi
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Shisheng Li
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117551
| | - Qing-Hua Xu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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25
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Abstract
The thin-film organic solar cells (OSCs) are currently one of the most promising photovoltaic technologies to effectively harvest the solar energy due to their attractive features of mechanical flexibility, light weight, low-cost manufacturing, and solution-processed large-scale fabrication, etc. However, the relative insufficient light absorption, short exciton diffusion distance, and low carrier mobility of the OSCs determine the power conversion efficiency (PCE) of the devices are relatively lower than their inorganic photovoltaic counterparts. To conquer the challenges, the two-dimensional (2D) nanomaterials, which have excellent photoelectric properties, tunable energy band structure, and solvent compatibility etc., exhibit the great potential to enhance the performance of the OSCs. In this review, we summarize the most recent successful applications of the 2D materials, including graphene, black phosphorus, transition metal dichalcogenides, and g-C3N4, etc., adapted in the charge transporting layer, the active layer, and the electrode of the OSCs, respectively, for boosting the PCE and stability of the devices. The strengths and weaknesses of the 2D materials in the application of OSCs are also reviewed in details. Additionally, the challenges, commercialization potentials, and prospects for the further development of 2D materials-based OSCs are outlined in the end.
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Seravalli L, Bosi M. A Review on Chemical Vapour Deposition of Two-Dimensional MoS 2 Flakes. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7590. [PMID: 34947186 PMCID: PMC8704647 DOI: 10.3390/ma14247590] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022]
Abstract
Two-dimensional (2D) materials such as graphene, transition metal dichalcogenides, and boron nitride have recently emerged as promising candidates for novel applications in sensing and for new electronic and photonic devices. Their exceptional mechanical, electronic, optical, and transport properties show peculiar differences from those of their bulk counterparts and may allow for future radical innovation breakthroughs in different applications. Control and reproducibility of synthesis are two essential, key factors required to drive the development of 2D materials, because their industrial application is directly linked to the development of a high-throughput and reliable technique to obtain 2D layers of different materials on large area substrates. Among various methods, chemical vapour deposition is considered an excellent candidate for this goal thanks to its simplicity, widespread use, and compatibility with other processes used to deposit other semiconductors. In this review, we explore the chemical vapour deposition of MoS2, considered one of the most promising and successful transition metal dichalcogenides. We summarize the basics of the synthesis procedure, discussing in depth: (i) the different substrates used for its deposition, (ii) precursors (solid, liquid, gaseous) available, and (iii) different types of promoters that favour the growth of two-dimensional layers. We also present a comprehensive analysis of the status of the research on the growth mechanisms of the flakes.
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Affiliation(s)
- Luca Seravalli
- IMEM-CNR, Parco Area delle Scienze 37A, 43124 Parma, Italy
| | - Matteo Bosi
- IMEM-CNR, Parco Area delle Scienze 37A, 43124 Parma, Italy
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27
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Zhao J, Liu H, Deng L, Bai M, Xie F, Wen S, Liu W. High Quantum Efficiency and Broadband Photodetector Based on Graphene/Silicon Nanometer Truncated Cone Arrays. SENSORS 2021; 21:s21186146. [PMID: 34577354 PMCID: PMC8473289 DOI: 10.3390/s21186146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023]
Abstract
Light loss is one of the main factors affecting the quantum efficiency of photodetectors. Many researchers have attempted to use various methods to improve the quantum efficiency of silicon-based photodetectors. Herein, we designed highly anti-reflective silicon nanometer truncated cone arrays (Si NTCAs) as a light-trapping layer in combination with graphene to construct a high-performance graphene/Si NTCAs photodetector. This heterojunction structure overcomes the weak light absorption and severe surface recombination in traditional silicon-based photodetectors. At the same time, graphene can be used both as a broad-spectrum absorption layer and as a transparent electrode to improve the response speed of heterojunction devices. Due to these two mechanisms, this photodetector had a high quantum efficiency of 97% at a wavelength of 780 nm and a short rise/fall time of 60/105µs. This device design promotes the development of silicon-based photodetectors and provides new possibilities for integrated photoelectric systems.
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28
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MoS 2 with Stable Photoluminescence Enhancement under Stretching via Plasmonic Surface Lattice Resonance. NANOMATERIALS 2021; 11:nano11071698. [PMID: 34203481 PMCID: PMC8307818 DOI: 10.3390/nano11071698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/18/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022]
Abstract
In this study, by combining a large-area MoS2 monolayer with silver plasmonic nanostructures in a deformable polydimethylsiloxane substrate, we theoretically and experimentally studied the photoluminescence (PL) enhancement of MoS2 by surface lattice resonance (SLR) modes of different silver plasmonic nanostructures. We also observed the stable PL enhancement of MoS2 by silver nanodisc arrays under differently applied stretching strains, caused by the mechanical holding effect of the MoS2 monolayer. We believe the results presented herein can guarantee the possibility of stably enhancing the light emission of transition metal dichalcogenides using SLR modes in a deformable platform.
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Minn K, Anopchenko A, Chang CW, Mishra R, Kim J, Zhang Z, Lu YJ, Gwo S, Lee HWH. Enhanced Spontaneous Emission of Monolayer MoS 2 on Epitaxially Grown Titanium Nitride Epsilon-Near-Zero Thin Films. NANO LETTERS 2021; 21:4928-4936. [PMID: 34109795 DOI: 10.1021/acs.nanolett.1c00491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Room-temperature photoluminescence enhancement of molybdenum disulfide (MoS2) monolayers on epitaxial titanium nitride (TiN) thin films grown by molecular-beam-epitaxy as well as magnetron-sputtered TiN films is observed by a confocal laser scanning microscope with excitation wavelengths covering the transition of TiN's macroscopic optical properties from dielectric to plasmonic. The photoluminescence enhancement increases as TiN becomes more metallic, and strong enhancement is obtained at the excitation wavelengths equal to or longer than the epsilon-near-zero (ENZ) wavelength of TiN films. A good agreement is observed between measured and calculated enhancements. The enhancement is attributed to the increased excitation field in MoS2 at TiN's ENZ wavelength and interference effects for thick spacers that separate the MoS2 flakes from TiN films in the metallic regime. This study enriches the fundamental understanding of emission properties on ENZ substrates that could be important for the development of advanced nanoscale lasers/light sources, optical/biosensors, and nano-optoelectronic devices.
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Affiliation(s)
- Khant Minn
- Department of Physics, Baylor University, Waco, Texas 76798, United States
| | - Aleksei Anopchenko
- Department of Physics, Baylor University, Waco, Texas 76798, United States
- Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
| | - Ching-Wen Chang
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Ragini Mishra
- Institute of Nanoengineering and Microsystems, National Tsing-Hua University, Hsinchu 30013, Taiwan
| | - Jinmin Kim
- Department of Physics, Baylor University, Waco, Texas 76798, United States
| | - Zhenrong Zhang
- Department of Physics, Baylor University, Waco, Texas 76798, United States
| | - Yu-Jung Lu
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Shangjr Gwo
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan
| | - Ho Wai Howard Lee
- Department of Physics, Baylor University, Waco, Texas 76798, United States
- Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
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30
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James Singh K, Ahmed T, Gautam P, Sadhu AS, Lien DH, Chen SC, Chueh YL, Kuo HC. Recent Advances in Two-Dimensional Quantum Dots and Their Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1549. [PMID: 34208236 PMCID: PMC8230759 DOI: 10.3390/nano11061549] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 01/28/2023]
Abstract
Two-dimensional quantum dots have received a lot of attention in recent years due to their fascinating properties and widespread applications in sensors, batteries, white light-emitting diodes, photodetectors, phototransistors, etc. Atomically thin two-dimensional quantum dots derived from graphene, layered transition metal dichalcogenide, and phosphorene have sparked researchers' interest with their unique optical and electronic properties, such as a tunable energy bandgap, efficient electronic transport, and semiconducting characteristics. In this review, we provide in-depth analysis of the characteristics of two-dimensional quantum dots materials, their synthesis methods, and opportunities and challenges for novel device applications. This analysis will serve as a tipping point for learning about the recent breakthroughs in two-dimensional quantum dots and motivate more scientists and engineers to grasp two-dimensional quantum dots materials by incorporating them into a variety of electrical and optical fields.
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Affiliation(s)
- Konthoujam James Singh
- Department of Photonics & Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (K.J.S.); (A.S.S.)
| | - Tanveer Ahmed
- Department of Electrical Engineering and Computer Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (T.A.); (D.-H.L.)
| | - Prakalp Gautam
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Annada Sankar Sadhu
- Department of Photonics & Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (K.J.S.); (A.S.S.)
| | - Der-Hsien Lien
- Department of Electrical Engineering and Computer Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (T.A.); (D.-H.L.)
| | - Shih-Chen Chen
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Hao-Chung Kuo
- Department of Photonics & Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (K.J.S.); (A.S.S.)
- Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan
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31
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Han C, Wang Y, Zhou W, Liang M, Ye J. Strong anisotropic enhancement of photoluminescence in WS 2 integrated with plasmonic nanowire array. Sci Rep 2021; 11:10080. [PMID: 33980867 PMCID: PMC8115162 DOI: 10.1038/s41598-021-89136-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/05/2021] [Indexed: 11/11/2022] Open
Abstract
Layered transition metal dichalcogenides (TMDCs) have shown great potential for a wide range of applications in photonics and optoelectronics. Nevertheless, valley decoherence severely randomizes its polarization which is important to a light emitter. Plasmonic metasurface with a unique way to manipulate the light-matter interaction may provide an effective and practical solution. Here by integrating TMDCs with plasmonic nanowire arrays, we demonstrate strong anisotropic enhancement of the excitonic emission at different spectral positions. For the indirect bandgap transition in bilayer WS2, multifold enhancement can be achieved with the photoluminescence (PL) polarization either perpendicular or parallel to the long axis of nanowires, which arises from the coupling of WS2 with localized or guided plasmon modes, respectively. Moreover, PL of high linearity is obtained in the direct bandgap transition benefiting from, in addition to the plasmonic enhancement, the directional diffraction scattering of nanowire arrays. Our method with enhanced PL intensity contrasts to the conventional form-birefringence based on the aspect ratio of nanowire arrays where the intensity loss is remarkable. Our results provide a prototypical plasmon-exciton hybrid system for anisotropic enhancement of the PL at the nanoscale, enabling simultaneous control of the intensity, polarization and wavelength toward practical ultrathin photonic devices based on TMDCs.
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Affiliation(s)
- Chunrui Han
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China.
- Device Physics of Complex Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
| | - Yu Wang
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Weihu Zhou
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Minpeng Liang
- Device Physics of Complex Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Jianting Ye
- Device Physics of Complex Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
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32
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Lan HY, Hsieh YH, Chiao ZY, Jariwala D, Shih MH, Yen TJ, Hess O, Lu YJ. Gate-Tunable Plasmon-Enhanced Photodetection in a Monolayer MoS 2 Phototransistor with Ultrahigh Photoresponsivity. NANO LETTERS 2021; 21:3083-3091. [PMID: 33761260 DOI: 10.1021/acs.nanolett.1c00271] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Monolayer transition metal dichalcogenides (TMDs), direct bandgap materials with an atomically thin nature, are promising materials for electronics and photonics, especially at highly scaled lateral dimensions. However, the characteristically low total absorption of photons in the monolayer TMD has become a challenge in the access to and realization of monolayer TMD-based high-performance optoelectronic functionalities and devices. Here, we demonstrate gate-tunable plasmonic phototransistors (photoFETs) that consist of monolayer molybdenum disulfide (MoS2) photoFETs integrated with the two-dimensional plasmonic crystals. The plasmonic photoFET has an ultrahigh photoresponsivity of 2.7 × 104 AW-1, achieving a 7.2-fold enhancement in the photocurrent compared to pristine photoFETs. This benefits predominately from the combination of the enhancement of the photon-absorption-rate via the strongly localized-electromagnetic-field and the gate-tunable plasmon-induced photocarrier-generation-rate in the monolayer MoS2. These results demonstrate a systematic methodology for designing ultrathin plasmon-enhanced photodetectors based on monolayer TMDs for next-generation ultracompact optoelectronic devices in the trans-Moore era.
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Affiliation(s)
- Hao-Yu Lan
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Yu-Hung Hsieh
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Zong-Yi Chiao
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Min-Hsiung Shih
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Ta-Jen Yen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Ortwin Hess
- Blackett Laboratory, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
- School of Physics and CRANN Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Yu-Jung Lu
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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33
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Kim H, Moon S, Kim J, Nam SH, Kim DH, Lee JS, Kim KH, Kang ESH, Ahn KJ, Kim T, Shin C, Suh YD. Purcell-enhanced photoluminescence of few-layer MoS 2 transferred on gold nanostructure arrays with plasmonic resonance at the conduction band edge. NANOSCALE 2021; 13:5316-5323. [PMID: 33656502 DOI: 10.1039/d0nr08158b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic coupling of metallic nanostructures with two-dimensional molybdenum disulfide (MoS2) atomic layers is an important topic because it provides a pathway to manipulate the optoelectronic properties and to overcome the limited optical cross-section of the materials. Plasmonic enhanced light-matter interaction of a MoS2 layer is known to be mainly governed by optical field enhancement and the Purcell effect, while the discrimination of the contribution from each mechanism to the plasmonic enhancement is challenging. Here, we investigate photoluminescence (PL) enhancement from few-layer MoS2 transferred on Au nanostructure arrays with controlled localized surface plasmon resonance (LSPR) spectral positions that were detuned from the excitation wavelengths. Two distinctive regimes in LSPR mode-dependent PL enhancement were revealed showing a maximum enhancement (∼40-fold) with zero detuning and a modest enhancement (∼10-fold) with the red-shift detuned LSPR from the excitation wavelength, which were attributed to LSPR-induced optical field enhancement and the Purcell effect, respectively. By applying the experimental parameters into the Purcell effect formalism, an effective mode volume of ∼0.016λ03 was estimated. Our work provides an insight into how to utilize few-layer MoS2 as a base material for optoelectronics by harnessing Purcell-enhanced optical responsivity.
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Affiliation(s)
- Hyunwoo Kim
- Laboratory for Advanced Molecular Probing (LAMP), Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea.
| | - Seunghyun Moon
- Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea.
| | - Jongwoo Kim
- Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Sang Hwan Nam
- Laboratory for Advanced Molecular Probing (LAMP), Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea.
| | - Dong Hwan Kim
- Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea.
| | - Jeong Seop Lee
- Department of Physics, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Kyoung-Ho Kim
- Department of Physics, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Evan S H Kang
- Department of Physics, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Kwang Jun Ahn
- Department of Energy Systems Research/Department of Physics, Ajou University, Suwon-si, 16499, South Korea
| | - Taewan Kim
- Department of Electrical Engineering and Smart Grid Research Center, Jeonbuk National University, Jeonju, 54896, South Korea.
| | - ChaeHo Shin
- Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea.
| | - Yung Doug Suh
- Laboratory for Advanced Molecular Probing (LAMP), Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea. and School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, South Korea
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34
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Liu T, Zhou C, Xiao S. Tailoring anisotropic absorption in a borophene-based structure via critical coupling. OPTICS EXPRESS 2021; 29:8941-8950. [PMID: 33820334 DOI: 10.1364/oe.419792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
The research of two-dimensional (2D) materials with atomic-scale thicknesses and unique optical properties has become a frontier in photonics and electronics. Borophene, a newly reported 2D material, provides a novel building block for nanoscale materials and devices. We present a simple borophene-based absorption structure to boost the light-borophene interaction via critical coupling in the visible wavelengths. The proposed structure consists of borophene monolayer deposited on a photonic crystal slab backed with a metallic mirror. The numerical simulations and theoretical analysis show that the light absorption of the structure can be remarkably enhanced as high as 99.80% via critical coupling mechanism with guided resonance, and the polarization-dependent absorption behaviors are demonstrated due to the strong anisotropy of borophene. We also examine the tunability of the absorption behaviors by adjusting carrier density and lifetime of borophene, air hole radius in the slab, the incident angle and polarization angle. The proposed absorption structure provides novel access to the flexible and effective manipulation of light-borophene interactions in the visible and shows a good prospect for the future borophene-based electronic and photonic devices.
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35
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Xu T, Geng Z. Strategies to improve performances of LSPR biosensing: Structure, materials, and interface modification. Biosens Bioelectron 2021; 174:112850. [DOI: 10.1016/j.bios.2020.112850] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/06/2020] [Accepted: 11/22/2020] [Indexed: 12/12/2022]
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36
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Iff O, Davanco M, Betzold S, Moczała-Dusanowska M, Wurdack M, Emmerling M, Höfling S, Schneider C. Hyperspectral study of the coupling between trions in WSe 2 monolayers to a circular Bragg grating cavity. COMPTES RENDUS. PHYSIQUE 2021; 22:10.5802/crphys.76. [PMID: 37965186 PMCID: PMC10644680 DOI: 10.5802/crphys.76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Circular Bragg gratings compose a very appealing photonic platform and nanophotonic interface for the controlled light-matter coupling of emitters in nanomaterials. Here, we discuss the integration of exfoliated monolayers of WSe2 with GaInP Bragg gratings. We apply hyperspectral imaging to our coupled system, and explore the spatio-spectral characteristics of our coupled monolayer-cavity system. Our work represents a valuable step towards the integration of atomically thin quantum emitters in semiconductor nanophotonic cavities.
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Affiliation(s)
- Oliver Iff
- Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, Würzburg-97074, Germany
| | - Marcelo Davanco
- Center for Nanoscale Science and Technology, NIST, Gaithersburg, 100 Bureau Drive, MD 20899,USA
| | - Simon Betzold
- Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, Würzburg-97074, Germany
| | - Magdalena Moczała-Dusanowska
- Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, Würzburg-97074, Germany
| | - Matthias Wurdack
- Nonlinear Physics Centre, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia
| | - Monika Emmerling
- Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, Würzburg-97074, Germany
| | - Sven Höfling
- Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, Würzburg-97074, Germany
- SUPA, School of Physics and Astronomy, University of St. Andrews,St. Andrews KY16 9SS, United Kingdom
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37
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Yang Y, Pan R, Tian S, Gu C, Li J. Plasmonic Hybrids of MoS 2 and 10-nm Nanogap Arrays for Photoluminescence Enhancement. MICROMACHINES 2020; 11:mi11121109. [PMID: 33333895 PMCID: PMC7765256 DOI: 10.3390/mi11121109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/18/2022]
Abstract
Monolayer MoS2 has attracted tremendous interest, in recent years, due to its novel physical properties and applications in optoelectronic and photonic devices. However, the nature of the atomic-thin thickness of monolayer MoS2 limits its optical absorption and emission, thereby hindering its optoelectronic applications. Hybridizing MoS2 by plasmonic nanostructures is a critical route to enhance its photoluminescence. In this work, the hybrid nanostructure has been proposed by transferring the monolayer MoS2 onto the surface of 10-nm-wide gold nanogap arrays fabricated using the shadow deposition method. By taking advantage of the localized surface plasmon resonance arising in the nanogaps, a photoluminescence enhancement of ~20-fold was achieved through adjusting the length of nanogaps. Our results demonstrate the feasibility of a giant photoluminescence enhancement for this hybrid of MoS2/10-nm nanogap arrays, promising its further applications in photodetectors, sensors, and emitters.
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Affiliation(s)
- Yang Yang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; (Y.Y.); (R.P.); (S.T.); (C.G.)
| | - Ruhao Pan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; (Y.Y.); (R.P.); (S.T.); (C.G.)
| | - Shibing Tian
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; (Y.Y.); (R.P.); (S.T.); (C.G.)
| | - Changzhi Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; (Y.Y.); (R.P.); (S.T.); (C.G.)
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junjie Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China; (Y.Y.); (R.P.); (S.T.); (C.G.)
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan 523808, China
- Correspondence:
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38
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Huang L, Su H, Hu G, Wu S, Wang Y, Chen B, Wang Q, Deng C, Yun B, Zhang R, Cui Y. Highly efficient and controllable photoluminescence emission on a suspended MoS 2-based plasmonic grating. NANOTECHNOLOGY 2020; 31:505201. [PMID: 32996469 DOI: 10.1088/1361-6528/abb1ea] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Being a new class of materials, transition metal dichalcogenides are paving the way for applications in atomically thin optoelectronics. However, the intrinsically weak light-matter interaction and the lack of manipulation ability has lead to poor light emission and tunable behavior. Here, we investigate the fluorescence characteristic of monolayer molybdenum disulfide on a metal narrow-slit grating, where a highly efficient, 471 times photoluminescence enhancement are realized, based on the hybrid surface plasmon polaritons resonances and the decreased influence of substrate. Moreover, the emitted intensity and polarization are controllable due to the polarization-dependent characteristic and anisotropy of grating. The manipulations of light-matter interactions in this special system provide a new insight into the fluorescent emission process and open a new avenue for high-performance low dimensional materials devices designs.
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Affiliation(s)
- Lei Huang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Huanhuan Su
- National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 People's Republic of China
| | - Guohua Hu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Shan Wu
- Key Laboratory of Functional Materials and Devices for Informatics of Anhui Higher Education Institutes, Fuyang Normal University, Fuyang 236037 People's Republic of China
| | - Yongkang Wang
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189 People's Republic of China
| | - Boyu Chen
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Qianjin Wang
- National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 People's Republic of China
| | - Chunyu Deng
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Binfeng Yun
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Ruohu Zhang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
| | - Yiping Cui
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096 People's Republic of China
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Wang J, Yang J, Shi D. Perfect absorption for monolayer transition-metal dichalcogenides by critical coupling. NANOTECHNOLOGY 2020; 31:465205. [PMID: 32721935 DOI: 10.1088/1361-6528/abaa10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Due to the inherent atomical size, transition-metal dichalcogenides (TMDCs) have a weak coupling with free-space light and exhibit poor optical absorption, which restricts some practical applications. Exploring an effective way to boost their absorption is important and highly desired. In this work, based on the temporal coupled-mode theory, a generic guide to approach 100% absorption of an absorber is presented. From such a theory, the perfect absorption of TMDCs integrated with dielectric photonic structure is both theoretically and numerically demonstrated. This proposed structure has advantageous tunability at the wavelengths of interest by adjusting structure parameters. Moreover, the angular dependence of the light absorption of such a structure for different polarizations is also investigated. The present work of boosting light absorption would be particularly favorable for applications in advanced photodetectors and modulators.
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Affiliation(s)
- Jie Wang
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, People's Republic of China
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40
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Kejík L, Horák M, Šikola T, Křápek V. Structural and optical properties of monocrystalline and polycrystalline gold plasmonic nanorods. OPTICS EXPRESS 2020; 28:34960-34972. [PMID: 33182953 DOI: 10.1364/oe.409428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
The quality of lithographically prepared structures is intimately related to the properties of the metal film from which they are fabricated. Here we compare two kinds of thin gold films on a silicon nitride membrane: a conventional polycrystalline thin film deposited by magnetron sputtering and monocrystalline gold microplates that were chemically synthesised directly on the membrane's surface for the first time. Both pristine metals were used to fabricate plasmonic nanorods using focused ion beam lithography. The structural and optical properties of the nanorods were characterized by analytical transmission electron microscopy including electron energy loss spectroscopy. The dimensions of the nanorods in both substrates reproduced well the designed size of 240×80 nm2 with the deviations up to 20 nm in both length and width. The shape reproducibility was considerably improved among monocrystalline nanorods fabricated from the same microplate. Interestingly, monocrystalline nanorods featured inclined boundaries while the boundaries of the polycrystalline nanorods were upright. Q factors and peak loss probabilities of the modes in both structures are within the experimental uncertainty identical. We demonstrate that the optical response of the plasmonic nanorods is not deteriorated when the polycrystalline metal is used instead of the monocrystalline metal.
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41
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Song J, Kwon S, Kim B, Kim E, Murthy LNS, Lee T, Hong I, Lee BH, Lee SW, Choi SH, Kim KK, Cho CH, Hsu JWP, Kim DW. Opposite Polarity Surface Photovoltage of MoS 2 Monolayers on Au Nanodot versus Nanohole Arrays. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48991-48997. [PMID: 33048546 DOI: 10.1021/acsami.0c14563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We prepared MoS2 monolayers on Au nanodot (ND) and nanohole (NH) arrays. Both these sample arrays exhibited enhanced photoluminescence intensity compared with that of a bare SiO2/Si substrate. The reflectance spectra of MoS2/ND and MoS2/NH had clear features originating from excitation of localized surface plasmon and propagating surface plasmon polaritons. Notably, the surface photovoltages (SPV) of these hybrid plasmonic nanostructures had opposite polarities, indicating negative and positive charging at MoS2/ND and MoS2/NH, respectively. Surface potential maps, obtained by Kelvin probe force microscopy, suggested that the potential gradient led to a distinct spatial distribution of photo-generated charges in these two samples under illumination. Furthermore, the local density of photo-generated excitons, as predicted from optical simulations, explained the SPV spectra of MoS2/ND and MoS2/NH. We show that the geometric configuration of the plasmonic nanostructures modified the polarity of photo-generated excess charges in MoS2. These findings point to a useful means of optimizing optoelectronic characteristics and improving the performance of MoS2-based plasmonic devices.
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Affiliation(s)
- Jungeun Song
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Soyeong Kwon
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Bora Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Eunah Kim
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
| | - Lakshmi N S Murthy
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Taejin Lee
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Inhae Hong
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Korea
| | - Byoung Hoon Lee
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Korea
| | - Sang Wook Lee
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Soo Ho Choi
- Center for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Sungkyunkwan University, Suwon 16419, Korea
| | - Ki Kang Kim
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Sungkyunkwan University, Suwon 16419, Korea
| | - Chang-Hee Cho
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Julia W P Hsu
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
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42
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Kwon S, Lee SY, Choi SH, Kang JW, Lee T, Song J, Lee SW, Cho CH, Kim KK, Yee KJ, Kim DW. Polarization-Dependent Light Emission and Charge Creation in MoS 2 Monolayers on Plasmonic Au Nanogratings. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44088-44093. [PMID: 32892618 DOI: 10.1021/acsami.0c13436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We fabricated plasmonic hybrid nanostructures consisting of MoS2 monolayer flakes and Au nanogratings with a period of 500 nm. The angle-resolved reflectance and photoluminescence spectra of the hybrid nanostructures clearly indicated a coupling between surface plasmon polaritons (SPPs) and incoming photons. The surface photovoltage (SPV) maps could visualize the spatial distribution of net charges while shining light on the sample. Considerable polarization and wavelength dependence of the SPV signals suggested that the SPP mode enhanced the light-matter interaction and resulting exciton generation in the MoS2 monolayer. From the photoluminescence spectra and the morphology of the suspended MoS2 region, it could be noted that light irradiation did not much raise the temperature of the MoS2 monolayers on the nanogratings. Nanoscopic SPV and surface topography measurements could reveal the local optoelectronic and mechanical properties of MoS2 monolayers. This work provided us insights into the proposal of a high-performance MoS2/metal optoelectronic devices, based on the understanding of the SPP-photon and SPP-exciton coupling.
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Affiliation(s)
- Soyeong Kwon
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Seong-Yeon Lee
- Department of Physics, Chungnam National University, Daejeon 34134, Korea
| | - Soo Ho Choi
- Center for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Sungkyunkwan University, Suwon 16419, Korea
| | - Jang-Won Kang
- Department of Physics, Mokpo National University, Muan, Jeollanam-do 58554, Korea
| | - Taejin Lee
- Department of Emerging Materials Science, DGIST, Daegu 42988, Korea
| | - Jungeun Song
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Sang Wook Lee
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Chang-Hee Cho
- Department of Emerging Materials Science, DGIST, Daegu 42988, Korea
| | - Ki Kang Kim
- Center for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Sungkyunkwan University, Suwon 16419, Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
| | - Ki-Ju Yee
- Department of Physics, Chungnam National University, Daejeon 34134, Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
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43
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Kim JH, Lee HS, An GH, Lee J, Oh HM, Choi J, Lee YH. Dielectric Nanowire Hybrids for Plasmon-Enhanced Light-Matter Interaction in 2D Semiconductors. ACS NANO 2020; 14:11985-11994. [PMID: 32840363 DOI: 10.1021/acsnano.0c05158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monolayer transition metal dichalcogenides (TMDs) with a direct band gap are suitable for various optoelectronic applications such as ultrathin light emitters and absorbers. However, their weak light absorption caused by the atomically thin layer hinders more versatile applications for high optical gains. Although plasmonic hybridization with metal nanostructures significantly enhances light-matter interactions, the corrosion, instability of the metal nanostructures, and the undesired effects of direct metal-semiconductor contact act as obstacles to its practical application. Herein, we propose a dielectric nanostructure for plasmon-enhanced light-matter interaction of TMDs. TiO2 nanowires (NWs), as an example, are hybridized with a MoS2 monolayer on various substrates. The structure is implemented by placing a monolayer MoS2 between a TiO2 NW for a photonic scattering effect and metallic substrates with a spacer for the plasmonic Purcell effect. Here, the thin dielectric spacer is aimed at minimizing emission quenching from direct metal contact, while maximizing optical field localization in ultrathin MoS2 near the TiO2 NW. An effective emission enhancement factor of ∼22 is attained for MoS2 near the NW of the hybrid structure compared to the one without NWs. Our work is expected to facilitate a hybridized platform based on 2D semiconductors for high-performance and robust optoelectronics via engineering dielectric nanostructures with plasmonic materials.
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Affiliation(s)
- Jung Ho Kim
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyun Seok Lee
- Department of Physics, Research Institute for Nanoscale Science and Technology, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Gwang Hwi An
- Department of Physics, Research Institute for Nanoscale Science and Technology, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Jubok Lee
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hye Min Oh
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Jihoon Choi
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Young Hee Lee
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
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44
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Deng M, Li Z, Rong X, Luo Y, Li B, Zheng L, Wang X, Lin F, Meixner AJ, Braun K, Zhu X, Fang Z. Light-Controlled Near-Field Energy Transfer in Plasmonic Metasurface Coupled MoS 2 Monolayer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003539. [PMID: 32964680 DOI: 10.1002/smll.202003539] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/18/2020] [Indexed: 06/11/2023]
Abstract
The energy transfer from plasmonic nanostructures to semiconductors has been extensively studied to enhance light-harvesting and tailor light-matter interactions. In this study, the efficient energy transfer from an Au metasurface to monolayered MoS2 within a near-field coupling regime is reported. The metasurface is designed and fabricated to demonstrate strong photoluminescence (PL) and cathodoluminescence (CL) emission spectra. In the coupled heterostructure of MoS2 with a metasurface, both the Raman shift and absorption spectral intensities of monolayered MoS2 are affected. The spectral profile and PL peak position can be tailored owing to the energy transfer between plasmonic nanostructures and semiconductors. This is confirmed by ultrafast lifetime measurement. A theoretical model of two coupled oscillators is proposed, where the expanded general solutions (EGS) of such a model result in a series of eigenvalues that correspond to the renormalization of energy levels in modulated MoS2. The model can predict the peak shift up to tens of nanometers in hybrid structures and hence provides an alternative method to describe energy transfer between metallic structures and two-dimensional (2D) semiconductors. A viable approach for studying light-matter interactions in 2D semiconductors via near-field energy transfer is presented, which may stimulate the applications of functional nanophotonic devices.
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Affiliation(s)
- Miaoyi Deng
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Ziwei Li
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xin Rong
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Yang Luo
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Bowen Li
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Liheng Zheng
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Xiao Wang
- School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Feng Lin
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Alfred J Meixner
- Institute of Physical and Theoretical Chemistry, University of Tübingen, Tübingen, 72076, Germany
| | - Kai Braun
- Institute of Physical and Theoretical Chemistry, University of Tübingen, Tübingen, 72076, Germany
| | - Xing Zhu
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
| | - Zheyu Fang
- School of Physics, State Key Laboratory for Mesoscopic Physics, Academy for Advanced Interdisciplinary Studies, Nano-optoelectronics Frontier Center of Ministry of Education, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, P. R. China
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45
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Luo Z, Jia H, Lv L, Wang Q, Yan X. Gate-tunable trion binding energy in monolayer MoS 2 with plasmonic superlattice. NANOSCALE 2020; 12:17754-17761. [PMID: 32815964 DOI: 10.1039/d0nr02104k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two-dimensional transition metal dichalcogenides exhibit promising potential and attract the attention of the world in the application of optoelectronic devices owing to their distinctive physical and chemical properties. The real-time control of light-matter interactions in semiconductor devices through an external optical resonant cavity is crucial for designing next-generation optoelectronic devices. Here, we report the spectroscopic identification of trion binding energy in monolayer MoS2 field-effect transistors with plasmonic nanoresonators. In consequence, the binding energy could be regulated dynamically through an external electric field. In addition, after increasing the carrier injection, the evidence of the enhanced trion binding energy can also be observed, which can be utilized for researching magneto-plasmons. The ability to dynamically control the optical properties by electrostatic doping opens a platform for designing next-generation optoelectronic and valleytronic applications in two-dimensional crystals with accurate and precise tailored responses.
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Affiliation(s)
- Zhuang Luo
- Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices, Jiangsu University, Zhenjiang 212013, P. R. China.
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46
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Schuler B, Cochrane KA, Kastl C, Barnard ES, Wong E, Borys NJ, Schwartzberg AM, Ogletree DF, de Abajo FJG, Weber-Bargioni A. Electrically driven photon emission from individual atomic defects in monolayer WS 2. SCIENCE ADVANCES 2020; 6:eabb5988. [PMID: 32938664 PMCID: PMC7494346 DOI: 10.1126/sciadv.abb5988] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/31/2020] [Indexed: 05/22/2023]
Abstract
Quantum dot-like single-photon sources in transition metal dichalcogenides (TMDs) exhibit appealing quantum optical properties but lack a well-defined atomic structure and are subject to large spectral variability. Here, we demonstrate electrically stimulated photon emission from individual atomic defects in monolayer WS2 and directly correlate the emission with the local atomic and electronic structure. Radiative transitions are locally excited by sequential inelastic electron tunneling from a metallic tip into selected discrete defect states in the WS2 bandgap. Coupling to the optical far field is mediated by tip plasmons, which transduce the excess energy into a single photon. The applied tip-sample voltage determines the transition energy. Atomically resolved emission maps of individual point defects closely resemble electronic defect orbitals, the final states of the optical transitions. Inelastic charge carrier injection into localized defect states of two-dimensional materials provides a powerful platform for electrically driven, broadly tunable, atomic-scale single-photon sources.
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Affiliation(s)
- Bruno Schuler
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA.
| | | | - Christoph Kastl
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA
- Walter-Schottky-Institut and Physik-Department, Technical University of Munich, Garching 85748, Germany
| | - Edward S Barnard
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - Edward Wong
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - Nicholas J Borys
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA
- Department of Physics, Montana State University, Bozeman, MT 59717, USA
| | | | - D Frank Ogletree
- Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - F Javier García de Abajo
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
- ICREA-Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
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47
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Sun Z, Huang F, Fu Y. MoS 2-based broadband and highly efficient solar absorbers. APPLIED OPTICS 2020; 59:6671-6676. [PMID: 32749370 DOI: 10.1364/ao.399772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
In order to obtain broadband, highly efficient, wide-angle, and polarization-insensitive solar absorbers, we propose a universal configuration consisting of monolayer molybdenum disulfide (MoS2) and the metal-insulator-metal structure, which gives rise to significant absorption enhancement of the MoS2 layer. Light trapping structures with silver square-, circle-, and crossed-shaped resonators are investigated. The localized surface plasmon resonances among the silver resonators induce prominent interaction between the incident photon and MoS2 layer, contributing to efficient absorption of light energy. Simulation results show that the absorber made of square patches enables the best performance and realizes absorptance higher than 90% from 400 to 666 nm and an average absorptance greater than 91% in the range of 400-700 nm. The average light absorption within the MoS2 layer reaches 74% in the visible spectrum, which is one of the highest levels for the existing MoS2-based absorbers. Meanwhile, the polarization-independent designs exhibit good angle tolerance within 50° incidences. Such a universal structure can also obtain broadband and highly efficient absorption by using other transition metal dichalcogenides such as MoSe2, WS2, and WSe2, which indicates that the configuration has great applicability in solar energy absorption of 2D materials. The proposed solar absorbers with simple configuration and broadband absorption in wide incident angles have potential in applications such as solar cells, photovoltaic devices, and blackbody materials.
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48
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Zhu YP, El-Demellawi JK, Yin J, Lopatin S, Lei Y, Liu Z, Miao X, Mohammed OF, Alshareef HN. Unprecedented Surface Plasmon Modes in Monoclinic MoO 2 Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1908392. [PMID: 32201985 DOI: 10.1002/adma.201908392] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/16/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Developing stable plasmonic materials featuring earth-abundant compositions with continuous band structures, similar to those of typical metals, has received special research interest. Owing to their metal-like behavior, monoclinic MoO2 nanostructures have been found to support stable and intense surface plasmon (SP) resonances. However, no progress has been made on their energy and spatial distributions over individual nanostructures, nor the origin of their possibly existing specific SP modes. Here, various MoO2 nanostructures are designed via polydopamine chemistry and managed to visualize multiple longitudinal and transversal SP modes supported by the monoclinic MoO2 , along with intrinsic interband transitions, using scanning transmission electron microscopy coupled with ultrahigh-resolution electron energy loss spectroscopy. The identified geometry-dependent SP energies are tuned by either controlling the shape and thickness of MoO2 nanostructures through their well-designed chemical synthesis, or by altering their length using a developed electron-beam patterning technique. Theoretical calculations reveal that the strong plasmonic behavior of the monoclinic MoO2 is associated with the abundant delocalized electrons in the Mo d orbitals. This work not only provides a significant improvement in imaging and tailoring SPs of nonconventional metallic nanostructures, but also highlights the potential of MoO2 nanostructures for micro-nano optical and optoelectronic applications.
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Affiliation(s)
- Yun-Pei Zhu
- Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jehad K El-Demellawi
- Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jun Yin
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Sergei Lopatin
- King Abdullah University of Science and Technology (KAUST), Core Labs, Thuwal, 23955-6900, Saudi Arabia
| | - Yongjiu Lei
- Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Zhixiong Liu
- Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Xiaohe Miao
- Westlake University, Xihu District, Hangzhou, Zhejiang, 310024, China
| | - Omar F Mohammed
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Husam N Alshareef
- Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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49
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Wen T, Zhang W, Liu S, Hu A, Zhao J, Ye Y, Chen Y, Qiu CW, Gong Q, Lu G. Steering valley-polarized emission of monolayer MoS 2 sandwiched in plasmonic antennas. SCIENCE ADVANCES 2020; 6:eaao0019. [PMID: 32490202 PMCID: PMC7239647 DOI: 10.1126/sciadv.aao0019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 03/09/2020] [Indexed: 05/22/2023]
Abstract
Monolayer transition metal dichalcogenides have intrinsic spin-valley degrees of freedom, making it appealing to exploit valleytronic and optoelectronic applications at the nanoscale. Here, we demonstrate that a chiral plasmonic antenna consisting of two stacked gold nanorods can modulate strongly valley-polarized photoluminescence (PL) of monolayer MoS2 in a broad spectral range at room temperature. The valley-polarized PL of the MoS2 using the antenna can reach up to ~47%, with approximately three orders of PL magnitude enhancement within the plasmonic nanogap. Besides, the K and K' valleys under opposite circularly polarized light excitation exhibit different emission intensities and directivities in the far field, which can be attributed to the modulation of the valley-dependent excitons by the chiral antenna in both the excitation and emission processes. The distinct features of the ultracompact hybrid suggest potential applications for valleytronic and photonic devices, chiral quantum optics, and high-sensitivity detection.
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Affiliation(s)
- Te Wen
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Weidong Zhang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Shuai Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
| | - Aiqin Hu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
| | - Jingyi Zhao
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
| | - Yu Ye
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
| | - Yang Chen
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Qihuang Gong
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Guowei Lu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
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Kim E, Lee C, Song J, Kwon S, Kim B, Kim DH, Park TJ, Jeong MS, Kim DW. MoS 2 Monolayers on Au Nanodot Arrays: Surface Plasmon, Local Strain, and Interfacial Electronic Interaction. J Phys Chem Lett 2020; 11:3039-3044. [PMID: 32223266 DOI: 10.1021/acs.jpclett.0c00691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal and transition-metal dichalcogenide (TMD) hybrid systems have been attracting growing research attention because exciton-plasmon coupling is a desirable means of tuning the physical properties of TMD materials. Competing effects of metal nanostructures, such as the local electromagnetic field enhancement and luminescence quenching, affect the photoluminescence (PL) characteristics of metal/TMD nanostructures. In this study, we prepared TMD MoS2 monolayers on hexagonal arrays of Au nanodots and investigated their physical properties by micro-PL and surface photovoltage (SPV) measurements. MoS2 monolayers on bare Au nanodots exhibited higher PL intensities than those of MoS2 monolayers on 5-nm-thick Al2O3-coated Au nanodots. The Al2O3 spacer layer blocked charge transfer at the Au/MoS2 interface but allowed the transfer of mechanical strain to the MoS2 monolayers on the nanodots. The SPV mapping results revealed not only the electron-transfer behavior at the Au/MoS2 contacts but also the lateral drift of charge carriers at the MoS2 surface under light illumination, which corresponds to nonradiative relaxation processes of the photogenerated excitons.
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Affiliation(s)
- Eunah Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Chanwoo Lee
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
| | - Jungeun Song
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Soyeong Kwon
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | - Bora Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
| | | | | | - Mun Seok Jeong
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Korea
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