1
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Averchenko AV, Abbas OA, Salimon IA, Zharkova EV, Grayfer ED, Lipovskikh S, McNaughter P, Lewis D, Hallam T, Lagoudakis PG, Mailis S. Laser-Induced Synthesis of Tin Sulfides. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401891. [PMID: 39004881 DOI: 10.1002/smll.202401891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/21/2024] [Indexed: 07/16/2024]
Abstract
Various polytypes of van der Waals (vdW) materials can be formed by sulfur and tin, which exhibit distinctive and complementary electronic properties. Hence, these materials are attractive candidates for the design of multifunctional devices. This work demonstrates direct selective growth of tin sulfides by laser irradiation. A 532 nm continuous wave laser is used to synthesize centimeter-scale tin sulfide tracks from single source precursor tin(II) o-ethylxanthate under ambient conditions. Modulation of laser irradiation conditions enables tuning of the dominant phase of tin sulfide as well as SnS2/SnS heterostructures formation. An in-depth investigation of the morphological, structural, and compositional characteristics of the laser-synthesized tin sulfide microstructures is reported. Furthermore, laser-synthesized tin sulfides photodetectors show broad spectral response with relatively high photoresponsivity up to 4 AW-1 and fast switching time (τ rise = 1.8 ms and τ fall = 16 ms). This approach is versatile and can be exploited in various fields such as energy conversion and storage, catalysis, chemical sensors, and optoelectronics.
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Affiliation(s)
- Aleksandr V Averchenko
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Omar A Abbas
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
- Laser and Optoelectronics Department, College of Engineering, Al-Nahrain University, Baghdad, 10072, Iraq
| | - Igor A Salimon
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Ekaterina V Zharkova
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Ekaterina D Grayfer
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Svetlana Lipovskikh
- Center for Energy Science and Technology (CEST), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Paul McNaughter
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David Lewis
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Toby Hallam
- School of Mathematics, Statistics and Physics, Newcastle University, Newcastle upon Tyne, NE17RU, UK
| | - Pavlos G Lagoudakis
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
| | - Sakellaris Mailis
- Center for Photonic Science and Engineering (CPhSE), Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow, 143026, Russian Federation
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2
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Guo H, Pan J, Du S. First-Principles Study of the Schottky Contact, Tunneling Probability, and Optical Properties of MX/TiB 4 Heterojunctions (M = Ge, Sn; X = S, Se, Te): Strain Engineering Tunability. ACS APPLIED MATERIALS & INTERFACES 2024; 16:31513-31523. [PMID: 38840440 DOI: 10.1021/acsami.4c05905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Designing two-dimensional (2D) heterojunctions with rapid response and minimal energy consumption holds immense significance for the advancement of the next generation of electronic devices. Here, we construct a series of Schottky heterojunctions based on TiB4 monolayer and group-IV monochalcogenide monolayers MX (M = Ge, Sn; X = S, Se, Te). Using first-principles calculations, we investigate the structural stability, Schottky contact barrier, tunneling probability, and optical properties of MX/TiB4 heterojunctions. The calculated binding energies reveal that X-type MX/TiB4 heterojunctions exhibit more stable structures than M- and C-type stacking modes. Schottky barrier heights (SBHs) indicate that X-type GeSe/TiB4 and GeTe/TiB4 form n-type Schottky contacts with SBHs of 0.497 and 0.132 eV, respectively, while SnS/TiB4 and SnSe/TiB4 form p-type Schottky contacts with SBHs of 0.557 and 0.418 eV, respectively. Moreover, X-type MX/TiB4 heterojunctions exhibit high susceptibility to interlayer electron tunneling due to their large tunneling probability and strong interlayer interaction. Meanwhile, enhanced optical absorption capacity in MX/TiB4 heterojunctions is also observed compared with individual TiB4 and MX monolayers. By applying in-plane biaxial strain, the transformation of MX/TiB4 heterojunctions from a Schottky contact to an Ohmic contact can also be realized. Our findings could offer valuable candidate materials and guidance for the design of the next generation of nanodevices with high electronic and optical performances.
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Affiliation(s)
- Hao Guo
- School of Urban Construction, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Jinbo Pan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shixuan Du
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
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3
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Ruderman A, Oviedo MB, Paz SA, Leiva EPM. Diversity of Behavior after Collisions of Sn and Si Nanoparticles Found Using a New Density Functional Tight-Binding Method. J Phys Chem A 2023; 127:8955-8965. [PMID: 37831543 DOI: 10.1021/acs.jpca.3c05534] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
We present a new approach to studying nanoparticle collisions using density functional based tight binding (DFTB). A novel DFTB parametrization has been developed to study the collision process of Sn and Si clusters (NPs) using molecular dynamics (MD). While bulk structures were used as training sets, we show that our model is able to accurately reproduce the cohesive energy of the nanoparticles using density functional theory (DFT) as a reference. A surprising variety of phenomena are revealed for the Si/Sn nanoparticle collisions, depending on the size and velocity of the collision: from core-shell structure formation to bounce-off phenomena.
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Affiliation(s)
- Andrés Ruderman
- Facultad de Matemática, Astronomía Física y Computación, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
- Consejo Nacional de Investigaciones Cientıficas y Técnicas (CONICET), Instituto de Física Enrique Gaviola (IFEG), Córdoba X5000HUA, Argentina
| | - María Belén Oviedo
- Facultad de Ciencias Quımicas, Departamento de Quımica Teórica y Computacional, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
- Consejo Nacional de Investigaciones Cientıficas y Técnicas (CONICET), Instituto de Fisicoquımica de Córdoba (INFIQC), Córdoba X5000HUA, Argentina
| | - Sergio Alexis Paz
- Facultad de Ciencias Quımicas, Departamento de Quımica Teórica y Computacional, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
- Consejo Nacional de Investigaciones Cientıficas y Técnicas (CONICET), Instituto de Fisicoquımica de Córdoba (INFIQC), Córdoba X5000HUA, Argentina
| | - Ezequiel P M Leiva
- Facultad de Ciencias Quımicas, Departamento de Quımica Teórica y Computacional, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
- Consejo Nacional de Investigaciones Cientıficas y Técnicas (CONICET), Instituto de Fisicoquımica de Córdoba (INFIQC), Córdoba X5000HUA, Argentina
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4
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Jeong RH, Lee JH, Boo JH. Phase-Controlled Multi-Dimensional-Structure SnS/SnS 2/CdS Nanocomposite for Development of Solar-Driven Hydrogen Evolution Photocatalyst. Int J Mol Sci 2023; 24:13774. [PMID: 37762078 PMCID: PMC10530790 DOI: 10.3390/ijms241813774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
The quest for water-splitting photocatalysts to generate hydrogen as a clean energy source from two-dimensional (2D) materials has enormous implications for sustainable energy solutions. Photocatalytic water splitting, a major field of interest, is focused on the efficient production of hydrogen from renewable resources such as water using 2D materials. Tin sulfide and tin disulfide, collectively known as SnS and SnS2, respectively, are metal sulfide compounds that have gained attention for their photocatalytic properties. Their unique electronic structures and morphological characteristics make them promising candidates for harnessing solar energy for environmental and energy-related purposes. CdS/SnS/SnS2 photocatalysts with two Sn phases (II and IV) were synthesized using a solvothermal method in this study. CdS was successfully placed on a broad SnS/SnS2 plane after a series of characterizations. We found that it is composited in the same way as a core-shell shape. When the SnS/SnS2 phase ratio was dominated by SnS and the structure was composited with CdS, the degradation efficiency was optimal. This material demonstrated high photocatalytic hydrogenation efficiency as well as efficient photocatalytic removal of Cr(VI) over 120 min. Because of the broad light absorption of CdS, the specific surface area, which is the reaction site, became very large. Second, it served as a transport medium for electron transfer from the conduction band (CB) of the SnS to the CB of the SnS2. Because of the composite, these electrons flowed into the CB of CdS, improving the separation efficiency of the photogenerated carriers even further. This material, which was easily composited, also effectively prevented mineral corrosion, which is a major issue with CdS.
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Affiliation(s)
- Rak Hyun Jeong
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
- Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Jae Hyeong Lee
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Jin-Hyo Boo
- Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
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5
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Zhang X, Shi Y, Shi Z, Xia H, Ma M, Wang Y, Huang K, Wu Y, Gong Y, Fei H, He Y, Ye G. High-Pressure Synthesis of Single-Crystalline SnS Nanoribbons. NANO LETTERS 2023; 23:7449-7455. [PMID: 37556377 DOI: 10.1021/acs.nanolett.3c01879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Two-dimensional tin monosulfide (SnS) is attractive for the development of electronic and optoelectronic devices with anisotropic characteristics. However, its shape-controlled synthesis with an atomic thickness and high quality remains challenging. Here, we show that highly crystalline SnS nanoribbons can be produced via high-pressure (0.5 GPa) and thermal treatment (400 °C). These SnS nanoribbons have a length of several tens of micrometers and a thickness down to 5.8 nm, giving an average aspect ratio of ∼30.6. The crystal orientation along the zigzag direction and the in-plane structural anisotropy of the SnS nanoribbons are identified by transmission electron microscopy and polarized Raman spectroscopy, respectively. An ionic liquid-gated field-effect transistor fabricated using the SnS nanoribbon exhibits an on/off current ratio of >103 and a field-effect mobility of ∼0.7 cm2 V-1 s-1. This work provides a unique way to achieve one-dimensional growth of SnS.
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Affiliation(s)
- Xinyu Zhang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yuyang Shi
- School of Science, Wuhan University of Technology, Wuhan 430070, China
| | - Zude Shi
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Hang Xia
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Mingyu Ma
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science & Technology, Lanzhou University, Lanzhou 730000, China
| | - Yiliu Wang
- College of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Kang Huang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Ye Wu
- School of Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yongji Gong
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China
| | - Huilong Fei
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yongmin He
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Gonglan Ye
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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6
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Sheng C, Bu Y, Li Y, Su L, Yu Y, Cao D, Zhou J, Chen X, Lu W, Shu H. Phase-Controllable Growth of Air-Stable SnS Nanostructures for High-Performance Photodetectors with Ultralow Dark Current. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36888888 DOI: 10.1021/acsami.2c21958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The epitaxial growth of low-dimensional tin chalcogenides SnX (X = S, Se) with a controlled crystal phase is of particular interest since it can be utilized to tune optoelectronic properties and exploit potential applications. However, it still remains a great challenge to synthesize SnX nanostructures with the same composition but different crystal phases and morphologies. Herein, we report a phase-controlled growth of SnS nanostructures via physical vapor deposition on mica substrates. The phase transition from α-SnS (Pbnm) nanosheets to β-SnS (Cmcm) nanowires can be tailored by the reduction of growth temperature and precursor concentration, which originates from a delicate competition between SnS-mica interfacial coupling and phase cohesive energy. The phase transition from the α to β phase not only greatly improves the ambient stability of SnS nanostructures but also leads to the band gap reduction from 1.03 to 0.93 eV, which is responsible for fabricated β-SnS devices with an ultralow dark current of 21 pA at 1 V, an ultrafast response speed of ≤14 μs, and broadband spectra response from the visible to near-infrared range under ambient condition. A maximum detectivity of the β-SnS photodetector arrives at 2.01 × 108 Jones, which is about 1 or 2 orders of magnitude larger than that of α-SnS devices. This work provides a new strategy for the phase-controlled growth of SnX nanomaterials for the development of highly stable and high-performance optoelectronic devices.
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Affiliation(s)
- Chuangwei Sheng
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
| | - Yonghao Bu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanyan Li
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
| | - Liqin Su
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
| | - Yue Yu
- College of Science, China Jiliang University, Hangzhou 310018, China
| | - Dan Cao
- College of Science, China Jiliang University, Hangzhou 310018, China
| | - Jing Zhou
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoshuang Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Lu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haibo Shu
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
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7
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Sarkar AS, Konidakis I, Gagaoudakis E, Maragkakis GM, Psilodimitrakopoulos S, Katerinopoulou D, Sygellou L, Deligeorgis G, Binas V, Oikonomou IM, Komninou P, Kiriakidis G, Kioseoglou G, Stratakis E. Liquid Phase Isolation of SnS Monolayers with Enhanced Optoelectronic Properties. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2201842. [PMID: 36574469 PMCID: PMC9951343 DOI: 10.1002/advs.202201842] [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: 08/15/2022] [Revised: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Recent advances in atomically thin two dimensional (2D) anisotropic group IVA -VI metal monochalcogenides (MMCs) and their fascinating intrinsic properties and potential applications are hampered due to an ongoing challenge of monolayer isolation. Among the most promising MMCs, tin (II) sulfide (SnS) is an earth-abundant layered material with tunable bandgap and anisotropic physical properties, which render it extraordinary for electronics and optoelectronics. To date, however, the successful isolation of atomically thin SnS single layers at large quantities has been challenging due to the presence of strong interlayer interactions, attributed to the lone-pair electrons of sulfur. Here, a novel liquid phase exfoliation approach is reported, which enables the overcome of such strong interlayer binding energy. Specifically, it demonstrates that the synergistic action of external thermal energy with the ultrasound energy-induced hydrodynamic force in solution gives rise to the systematic isolation of highly crystalline SnS monolayers (1L-SnS). It is shown that the exfoliated 1L-SnS crystals exhibit high carrier mobility and deep-UV spectral photodetection, featuring a fast carrier response time of 400 ms. At the same time, monolayer-based SnS transistor devices fabricated from solution present a high on/off ratio, complemented with a responsivity of 6.7 × 10-3 A W-1 and remarkable stability upon prolonged operation in ambient conditions. This study opens a new avenue for large-scale isolation of highly crystalline SnS and other MMC manolayers for a wide range of applications, including extended area nanoelectronic devices, printed from solution.
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Affiliation(s)
- Abdus Salam Sarkar
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - Ioannis Konidakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - E. Gagaoudakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - G. M. Maragkakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
- Department of PhysicsUniversity of CreteHeraklion710 03Greece
| | - S. Psilodimitrakopoulos
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - D. Katerinopoulou
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
- Department of PhysicsUniversity of CreteHeraklion710 03Greece
| | - L. Sygellou
- Institute of Chemical Engineering Sciences (ICE‐HT)Foundation of Research and TechnologyHellas, P.O. Box 1414Rio Patras26504Greece
| | - G. Deligeorgis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - Vassilios Binas
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
- Department of PhysicsUniversity of CreteHeraklion710 03Greece
| | - Ilias M. Oikonomou
- Department of PhysicsAristotle University of ThessalonikiThessaloniki54124Greece
| | - Philomela Komninou
- Department of PhysicsAristotle University of ThessalonikiThessaloniki54124Greece
| | - G. Kiriakidis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
| | - G. Kioseoglou
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
- Department of Materials Science and TechnologyUniversity of CreteHeraklion710 03Greece
| | - E. Stratakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklion700 13Greece
- Department of PhysicsUniversity of CreteHeraklion710 03Greece
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8
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Fu X, Li T, Li Q, Hao C, Zhang L, Fu D, Wang J, Xu H, Gu Y, Zhong F, He T, Zhang K, Panin GN, Lu W, Miao J, Hu W. Geometry-asymmetric photodetectors from metal-semiconductor-metal van der Waals heterostructures. MATERIALS HORIZONS 2022; 9:3095-3101. [PMID: 36268699 DOI: 10.1039/d2mh00872f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The functional diversities of two-dimensional (2D) material devices with simple architectures are ultimately limited by immature doping techniques. An alternative strategy is to use geometry-asymmetric metal-semiconductor-metal (GA-MSM) structures, which enable the basic functions of semiconductor junctions such as rectification and photovoltaics. Here, the mixed-dimensional van der Waals heterostructures (MDvdWHs) based on the separation and self-assembly of p-type SnS layered nanosheets (NSs) and n-type SnS2 nanoparticles (NPs) are obtained using an aqueous phase exfoliation (APE) method. Due to the surface charge transfer doping, the carrier transport mechanism of devices based on MDvdWHs turns from thermionic field emission (TFE) to thermionic emission (TE), with the rectification factor (Iforward/Ireverse) changing from 0.7 to 3. To further illustrate the experimental results, the generic current transport models of GA-MSM devices have been established based on the TE and TFE mechanisms in which the TE and TFE mechanisms lead to opposite rectification phenomena in good agreement with the experimental results. The GA-MSM devices show a photovoltaic effect with a high responsivity of 35 A W-1 and detectivity of 3.4 × 1011 cm Hz1/2 W-1. This study not only provides a novel strategy to design photovoltaic devices with MDvdWHs, but more importantly, we have established fundamental models for the rectification behavior of GA-MSM devices.
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Affiliation(s)
- Xiao Fu
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tangxin Li
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Li
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunhui Hao
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Zhang
- Ministry of Education Key Laboratory for Green Preparation and Application of Functional Materials, Hubei Provincial Key Laboratory of Polymers, School of Materials Science and Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Dejun Fu
- Innovation Center of Research Institute of Tsinghua University in Zhuhai, Zhuhai 519000, China
| | - Jinjin Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hangyu Xu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Gu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Zhong
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ting He
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Zhang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Gennady N Panin
- Institute of Microelectronics Technology and High-Purity Materials Russian Academy of Sciences, Chernogolovka, Moscow 142432, Russia
| | - Wei Lu
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinshui Miao
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weida Hu
- School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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9
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Gong X, Yan T, Li J, Liu J, Zou H, Zhang B, Wu H, Zhou Z, Zhou X. Revealing the anisotropic phonon behaviours of layered SnS by angle/temperature-dependent Raman spectroscopy. RSC Adv 2022; 12:32262-32269. [PMID: 36714047 PMCID: PMC9828106 DOI: 10.1039/d2ra06470g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022] Open
Abstract
Tin sulfide (SnS), a IV-VI group layered compound, has attracted much attention because of its excellent thermoelectric properties along the crystallographic b-axis. However, there are few reports on the identification of its in-plane orientation. We observe a strong anisotropy of the in-plane Raman signal in bulk SnS. With the help of ab initio calculations, the vibrational symmetry of each observed Raman mode in the cleaved (00l)-plane is consistent with the experimental values. The angle-resolved polarized Raman spectroscopy, combined with electron backscattered diffraction technology, is utilized to systematically investigate the in-plane anisotropy of the phonon response and then determine the in-plane orientation. Furthermore, the temperature-dependent and laser-power-dependent Raman scattering analyses reveal that the adjacent layers in the SnS crystals show a relatively weak van der Waals interaction. These findings could provide much-needed experimental information for future applications related to the anisotropic transport properties of SnS single crystals.
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Affiliation(s)
- Xiangnan Gong
- Analytical and Testing Center, Chongqing UniversityChongqing 401331China
| | - Ting Yan
- College of Physics, Chongqing UniversityChongqing 401331China
| | - Jue Li
- College of Physics, Chongqing UniversityChongqing 401331China
| | - Jie Liu
- Analytical and Testing Center, Chongqing UniversityChongqing 401331China
| | - Hanjun Zou
- Analytical and Testing Center, Chongqing UniversityChongqing 401331China
| | - Bin Zhang
- Analytical and Testing Center, Chongqing UniversityChongqing 401331China
| | - Hong Wu
- School of Science, Chongqing University of Posts and TelecommunicationsChongqing 400065China
| | - Zizhen Zhou
- College of Physics, Chongqing UniversityChongqing 401331China
| | - Xiaoyuan Zhou
- Analytical and Testing Center, Chongqing UniversityChongqing 401331China,College of Physics, Chongqing UniversityChongqing 401331China
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10
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Mitzi DB, Kim Y. Spiers Memorial Lecture: Next generation chalcogenide-based absorbers for thin-film solar cells. Faraday Discuss 2022; 239:9-37. [PMID: 36065897 DOI: 10.1039/d2fd00132b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Inorganic-based thin-film photovoltaics (TFPV) represents an important component of the growing low-carbon energy market and plays a vital role in the drive toward lower cost and increased penetration of solar energy. Yet, commercialized thin-film absorber technologies suffer from some non-ideal characteristics, such as toxic or non-abundant element use (e.g., CdTe and Cu(In,Ga)(S,Se)2, which bring into question their suitability for terawatt deployment. Numerous promising chalcogenide, halide, pnictide and oxide semiconductors are being pursued to bridge these concerns for TFPV and several promising paths have emerged, both as prospective replacements for the entrenched technologies, and to serve as partner (i.e., higher bandgap) absorbers for tandem junction devices-e.g., to be used with a lower bandgap Si bottom cell. The current perspective will primarily focus on emerging chalcogenide-based technologies and provide both an overview of absorber candidates that have been of recent interest and a deeper dive into an exemplary Cu2BaSnS4-related family. Overall, considering the combined needs of high-performance, low-cost, and operational stability, as well as the experiences gained from existing commercialized thin-film absorber technologies, chalcogenide-based semiconductors represent a promising direction for future PV development and also serve to highlight common themes and needs among the broader TFPV materials family.
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Affiliation(s)
- David B Mitzi
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA.,Department of Chemistry, Duke University, Durham, North Carolina 27708, USA.
| | - Yongshin Kim
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
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11
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Liu F, Ren X, Zhao J, Wu H, Wang J, Han X, Deng Y, Hu W. Inhibiting Sulfur Dissolution and Enhancing Activity of SnS for CO 2 Electroreduction via Electronic State Modulation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fei Liu
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Xixi Ren
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Jun Zhao
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Han Wu
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Jiajun Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Xiaopeng Han
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
| | - Yida Deng
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou570228, P. R. China
| | - Wenbin Hu
- School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin300072, P. R. China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou350207, P. R. China
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12
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Li X, Ruan S, Zhu H. SnS Nanoflakes/Graphene Hybrid: Towards Broadband Spectral Response and Fast Photoresponse. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2777. [PMID: 36014642 PMCID: PMC9413584 DOI: 10.3390/nano12162777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
High responsivity has been recently achieved in a graphene-based hybrid photogating mechanism photodetector using two-dimensional (2D) semiconductor nanosheets or quantum dots (QDs) sensitizers. However, there is a major challenge of obtaining photodetectors of fast photoresponse time and broad spectral photoresponse at room temperature due to the high trap density generated at the interface of nanostructure/graphene or the large band gap of QDs. The van der Waals interfacial coupling in small bandgap 2D/graphene heterostructures has enabled broadband photodetection. However, most of the photocarriers in the hybrid structure originate from the photoconductive effect, and it is still a challenge to achieve fast photodetection. Here, we directly grow SnS nanoflakes on graphene by the physical vapor deposition (PVD) method, which can avoid contamination between SnS absorbing layer and graphene and also ensures the high quality and low trap density of SnS. The results demonstrate the extended broad-spectrum photoresponse of the photodetector over a wide spectral range from 375 nm to 1550 nm. The broadband photodetecting mechanisms based on a photogating effect induced by the transferring of photo-induced carrier and photo-hot carrier are discussed in detail. More interestingly, the device also exhibits a large photoresponsivity of 41.3 AW-1 and a fast response time of around 19 ms at 1550 nm. This study reveals strategies for broadband response and sensitive photodetectors with SnS nanoflakes/graphene.
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Affiliation(s)
- Xiangyang Li
- College of Applied Technology, Shenzhen University, Shenzhen 518060, China
| | - Shuangchen Ruan
- College of New Energy and New Materials, Shenzhen Technology University, Shenzhen 518118, China
| | - Haiou Zhu
- College of New Energy and New Materials, Shenzhen Technology University, Shenzhen 518118, China
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13
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Karmakar G, Tyagi A, Shah AY, Wadawale A, Kedarnath G, Singh V. Molecular precursor driven synthesis of phase pure tin sulfide nanosheets and investigation of their photoresponsive behaviour. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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14
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Guo X, Wang Y, Elbourne A, Mazumder A, Nguyen CK, Krishnamurthi V, Yu J, Sherrell PC, Daeneke T, Walia S, Li Y, Zavabeti A. Doped 2D SnS materials derived from liquid metal-solution for tunable optoelectronic devices. NANOSCALE 2022; 14:6802-6810. [PMID: 35471407 DOI: 10.1039/d2nr01135b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Gas-liquid reaction phenomena on liquid-metal solvents can be used to form intriguing 2D materials with large lateral dimensions, where the free energies of formation determine the final product. A vast selection of elements can be incorporated into the liquid metal-based nanostructures, offering a versatile platform for fabricating novel optoelectronic devices. While conventional doping techniques of semiconductors present several challenges for 2D materials. Liquid metals provide a facile route for obtaining doped 2D semiconductors. In this work, we successfully demonstrate that the doping of 2D SnS can be realized in a glove box containing a diluted H2S gas. Low melting point elements such as Bi and In are alloyed with base liquid Sn in varying concentrations, resulting in the doping of 2D SnS layers incorporating Bi and In sulphides. Optoelectronic properties for photodetectors and piezoelectronics can be fine-tuned through the controlled introduction of selective migration doping. The structural modification of 2D SnS results in a 22.6% enhancement of the d11 piezoelectric coefficient. In addition, photodetector response times have increased by several orders of magnitude. Doping methods using liquid metals have significantly changed the photodiode and piezoelectric device performances, providing a powerful approach to tune optoelectronic device outputs.
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Affiliation(s)
- Xiangyang Guo
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Yichao Wang
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
- School of Life and Environmental Sciences, Deakin University, Geelong, Victoria, 3216, Australia
| | - Aaron Elbourne
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Aishani Mazumder
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Chung Kim Nguyen
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | | | - Jerry Yu
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Peter C Sherrell
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Torben Daeneke
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Sumeet Walia
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Yongxiang Li
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Ali Zavabeti
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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15
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Hassan A, Nazir MA, Shen Y, Guo Y, Kang W, Wang Q. First-Principles Study of the Structural, Electronic, and Enhanced Optical Properties of SnS/TaS 2 Heterojunction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2177-2184. [PMID: 34939777 DOI: 10.1021/acsami.1c16020] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Although the electronics and optoelectronics based on two-dimensional (2D) SnS have attracted great interest, their development is hindered by the large contact resistance at the interface of the metal-semiconductor junction. In this work, using first-principles calculations, we evaluate the contact performance in a van der Waals heterostructure composed of 2D SnS and TaS2. We demonstrate that holes can freely transfer from the electrode to the channel as a consequence of the Schottky-barrier-free interface as well as an upward band bending. Moreover, we show that the intrinsic properties of the SnS monolayer are well-preserved in the heterojunction, which is different from those of contact with metal surfaces. An enhanced optical response is also observed as compared with the freestanding sheet. Given the recent experimental synthesis of the SnS-TaS2 superlattice, this study enhances the understanding of the interface properties of SnS-based metal contact, which is essential for future device applications.
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Affiliation(s)
- Arzoo Hassan
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Muhammad Azhar Nazir
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Yiheng Shen
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
- Center for Applied Physics and Technology, HEPDS, College of Engineering, Peking University, Beijing 100871, China
| | - Yaguang Guo
- Department of Physics, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Wei Kang
- Center for Applied Physics and Technology, HEPDS, College of Engineering, Peking University, Beijing 100871, China
| | - Qian Wang
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
- Center for Applied Physics and Technology, HEPDS, College of Engineering, Peking University, Beijing 100871, China
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16
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Zi Y, Zhu J, Hu L, Wang M, Huang W. Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- You Zi
- School of Chemistry and Chemical Engineering Nantong University Nantong Jiangsu 226019 P. R. China
| | - Jun Zhu
- School of Chemistry and Chemical Engineering Nantong University Nantong Jiangsu 226019 P. R. China
| | - Lanping Hu
- School of Chemistry and Chemical Engineering Nantong University Nantong Jiangsu 226019 P. R. China
| | - Mengke Wang
- School of Chemistry and Chemical Engineering Nantong University Nantong Jiangsu 226019 P. R. China
| | - Weichun Huang
- School of Chemistry and Chemical Engineering Nantong University Nantong Jiangsu 226019 P. R. China
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17
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Hess P. Bonding, structure, and mechanical stability of 2D materials: the predictive power of the periodic table. NANOSCALE HORIZONS 2021; 6:856-892. [PMID: 34494064 DOI: 10.1039/d1nh00113b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This tutorial review describes the ongoing effort to convert main-group elements of the periodic table and their combinations into stable 2D materials, which is sometimes called modern 'alchemy'. Theory is successfully approaching this goal, whereas experimental verification is lagging far behind in the synergistic interplay between theory and experiment. The data collected here gives a clear picture of the bonding, structure, and mechanical performance of the main-group elements and their binary compounds. This ranges from group II elements, with two valence electrons, to group VI elements with six valence electrons, which form not only 1D structures but also, owing to their variable oxidation states, low-symmetry 2D networks. Outside of these main groups reviewed here, predominantly ionic bonding may be observed, for example in group II-VII compounds. Besides high-symmetry graphene with its shortest and strongest bonds and outstanding mechanical properties, low-symmetry 2D structures such as various borophene and tellurene phases with intriguing properties are receiving increasing attention. The comprehensive discussion of data also includes bonding and structure of few-layer assemblies, because the electronic properties, e.g., the band gap, of these heterostructures vary with interlayer layer separation and interaction energy. The available data allows the identification of general relationships between bonding, structure, and mechanical stability. This enables the extraction of periodic trends and fundamental rules governing the 2D world, which help to clear up deviating results and to estimate unknown properties. For example, the observed change of the bond length by a factor of two alters the cohesive energy by a factor of four and the extremely sensitive Young's modulus and ultimate strength by more than a factor of 60. Since the stiffness and strength decrease with increasing atom size on going down the columns of the periodic table, it is important to look for suitable allotropes of elements and binaries in the upper rows of the periodic table when mechanical stability and robustness are issues. On the other hand, the heavy compounds are of particular interest because of their low-symmetry structures with exotic electronic properties.
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Affiliation(s)
- Peter Hess
- Institute of Physical Chemistry, INF 253, University of Heidelberg, 69120 Heidelberg, Germany.
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18
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Tyagi A, Karmakar G, Mandal BP, Dutta Pathak D, Wadawale A, Kedarnath G, Srivastava AP, Jain VK. Di- tert-butyltin(IV) 2-pyridyl and 4,6-dimethyl-2-pyrimidyl thiolates: versatile single source precursors for the preparation of SnS nanoplatelets as anode material for lithium ion batteries. Dalton Trans 2021; 50:13073-13085. [PMID: 34581340 DOI: 10.1039/d1dt01142a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
New air and moisture stable di-tert-butyltin complexes derived from 2-mercaptopyridine (HSpy), [tBu2Sn(Spy)2], [tBu2Sn(Cl)(Spy)] and 4,6-dimethyl-2-mercaptopyrimidine (HSpymMe2) [tBu2Sn(Cl)(SpymMe2)], have been prepared and utilized as single-source molecular precursors for the preparation of orthorhombic SnS nanoplatelets by a hot injection method and thin films by aerosol assisted chemical vapour deposition (AACVD). The complexes were characterized by NMR (1H, 13C, 119Sn) and elemental analysis and their structures were unambiguously established by the single crystal X-ray diffraction technique. Thermolysis of these complexes in oleylamine (OAm) produced SnS nanoplatelets. The morphologies, elemental compositions, phase purity and crystal structures of the resulting Oam-capped nanoplatelets were determined by electron microscopy (SEM, TEM), energy dispersive X-ray spectroscopy (EDS) and pXRD, while the band gaps of the nanoplatelets were evaluated by diffuse reflectance spectroscopy (DRS) and were blue shifted relative to the bulk material. The morphology and preferential growth of the nanoplatelets were found to be significantly altered by the nature of the molecular precursor employed. The synthesized SnS nanoplatelets were evaluated for their performance as anode material for lithium ion batteries (LIBs). A cell comprised of an SnS electrode could be cycled for 50 cycles. The rate capability of SnS was investigated at different current densities in the range 0.1 to 0.7 A g-1 which revealed that the initial capacity could be regained.
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Affiliation(s)
- Adish Tyagi
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - Gourab Karmakar
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - B P Mandal
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - Dipa Dutta Pathak
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
| | - Amey Wadawale
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
| | - G Kedarnath
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - A P Srivastava
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai-400 085, India
| | - Vimal K Jain
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. .,UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Mumbai-400 098, India
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19
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Norton K, Jacobs J, Neilson J, Hopkinson D, Mokhtar MZ, Curry RJ, Lewis DJ. Preparation of solution processed photodetectors comprised of two-dimensional tin(ii) sulfide nanosheet thin films assembled via the Langmuir-Blodgett method. RSC Adv 2021; 11:26813-26819. [PMID: 35479979 PMCID: PMC9037678 DOI: 10.1039/d1ra04470b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/30/2021] [Indexed: 01/09/2023] Open
Abstract
We report the manufacture of fully solution processed photodetectors based on two-dimensional tin(ii) sulfide assembled via the Langmuir-Blodgett method. The method we propose can coat a variety of substrates including paper, Si/SiO2 and flexible polymer allowing for a potentially wide range of applications in future optoelectronic devices.
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Affiliation(s)
- Kane Norton
- Department of Materials, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Janet Jacobs
- Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Joseph Neilson
- Department of Materials, University of Manchester Oxford Road Manchester M13 9PL UK
| | - David Hopkinson
- Department of Materials, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Mohammad Z Mokhtar
- Department of Materials, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Richard J Curry
- Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester Oxford Road Manchester M13 9PL UK
| | - David J Lewis
- Department of Materials, University of Manchester Oxford Road Manchester M13 9PL UK
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20
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Zhang Q, Wang X, Yang S. δ-SnS: An Emerging Bidirectional Auxetic Direct Semiconductor with Desirable Carrier Mobility and High-Performance Catalytic Behavior toward the Water-Splitting Reaction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31934-31946. [PMID: 34196545 DOI: 10.1021/acsami.1c03650] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We propose a novel two-dimensional SnS allotrope (monolayer δ-SnS) based on an auxetic δ-phosphorene configuration using first-principles calculations. This monolayer appears to have outstanding stability as revealed by its energetic, kinetic, thermodynamic, and mechanic calculations, and it can withstand temperatures as high as 900 K. Monolayer δ-SnS is a wide direct-bandgap (2.354 eV) semiconductor, and its electron mobility is as high as ∼1.25 × 103 cm2 V-1 s -1, higher than that of monolayer KTlO (∼450 cm2 V-1 s-1) and MoS2 (∼200 cm2 V-1 s-1). Optical absorption spectra, reaching up to the order of ∼105 cm-1, are obviously excellent in the visible-light region, suggesting efficient harvesting of solar radiation. Because of its unique atomic motif, monolayer δ-SnS presents an unusual bidirectional auxetic effect: a high negative in-plane Poisson's ratio (-0.048 and -0.068), which is larger than those for many recently reported two-dimensional auxetic materials, e.g., black phosphorene (-0.027), borophene (-0.04), and monolayer penta-B2N4 (-0.02). The bandgap and band edge can be substantially manipulated under strain to meet the requirement of the water-splitting reaction. Particularly, when pH = 7, suitable band-edge alignments and small overpotentials of the photocatalytic OER (oxygen evolution reaction) and HER (hydrogen evolution reaction) appear, endowing monolayer δ-SnS with great potential as an efficient visible-light-driven bifunctional photocatalyst for water splitting.
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Affiliation(s)
- Qiang Zhang
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Xian Wang
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Shali Yang
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
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21
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Zhang S, Xie Y, Yang M, Li Z, Zhang L, Guo J, Tang J, Chen J, Wang X. A defect-rich ultrathin MoS 2/rGO nanosheet electrocatalyst for the oxygen reduction reaction. RSC Adv 2021; 11:24508-24514. [PMID: 35481001 PMCID: PMC9036912 DOI: 10.1039/d1ra03552e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/30/2021] [Indexed: 11/25/2022] Open
Abstract
The structural properties such as high specific surface area, good electrical conductivity, rich-defects of the catalyst surface guarantee outstanding catalytic performance and durability of oxygen reduction reaction (ORR) electrocatalysts. It is still a challenging task to construct ORR catalysts with excellent performance. Herein, we have reported column-like MoS2/rGO with defect-rich ultrathin nanosheets prepared by a convenient solvothermal method. The structure and composition of MoS2/rGO are systematically investigated. MoS2/rGO shows a remarkable electrocatalytic performance, which is characterized by an outstanding onset potential of 0.97 V, a half-wave potential of 0.83 V, noticeable methanol tolerance, and durability of 93.7% current retention, superior to commercial Pt/C. The ORR process occurring on MoS2/rGO is a typical four electron pathway. Therefore, this study achieves the design of a low-cost, highly efficient and stable nonprecious metal ORR electrocatalyst in alkaline media.
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Affiliation(s)
- Songlin Zhang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Yujiao Xie
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Mengna Yang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Zhongying Li
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Lulu Zhang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Jiahao Guo
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Jing Tang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Junming Chen
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
| | - Xuchun Wang
- College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233030 P. R. China
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22
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Nag S, Singh R, Kumar R. Exceptionally high open circuit thermoelectric figure of merit in two-dimensional tin sulphide. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:315705. [PMID: 34038887 DOI: 10.1088/1361-648x/ac0572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Thermoelectric materials with high values of power factor and thermoelectric figure of merit (ZT) are in great demand to make efficient thermoelectric devices. In this work, we explore the thermoelectric transport properties of layered tin sulphide (SnS) using first-principles method combined with Boltzmann transport theory. Our calculations show that the two-dimensional (2D) SnS materials have exceptionally high charge carrier mobilities and low lattice thermal conductivities as compared to other 2D materials such as graphene, phosphorene, MoS2, etc. Consequently, these 2D SnS materials have high power factor andZTvalues.
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Affiliation(s)
- Shagun Nag
- Department of Physics, Panjab University, Chandigarh 160014, India
| | - Ranber Singh
- Department of Physics, Sri Guru Gobind Singh College, Sector 26, Chandigarh 160019, India
| | - Ranjan Kumar
- Physics Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia and Department of Physics, Panjab University, Chandigarh 160014, India
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23
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Two-dimensional blue-phase CX (X = S, Se) monolayers with high carrier mobility and tunable photocatalytic water splitting capability. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Fei W, Zhang M, Fan X, Ye Y, Zhao M, Zheng C, Li Y, Zheng X. Engineering of bioactive metal sulfide nanomaterials for cancer therapy. J Nanobiotechnology 2021; 19:93. [PMID: 33789653 PMCID: PMC8011210 DOI: 10.1186/s12951-021-00839-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/20/2021] [Indexed: 02/06/2023] Open
Abstract
Metal sulfide nanomaterials (MeSNs) are a novel class of metal-containing nanomaterials composed of metal ions and sulfur compounds. During the past decade, scientists found that the MeSNs engineered by specific approaches not only had high biocompatibility but also exhibited unique physicochemical properties for cancer therapy, such as Fenton catalysis, light conversion, radiation enhancement, and immune activation. To clarify the development and promote the clinical transformation of MeSNs, the first section of this paper describes the appropriate fabrication approaches of MeSNs for medical science and analyzes the features and limitations of each approach. Secondly, we sort out the mechanisms of functional MeSNs in cancer therapy, including drug delivery, phototherapy, radiotherapy, chemodynamic therapy, gas therapy, and immunotherapy. It is worth noting that the intact MeSNs and the degradation products of MeSNs can exert different types of anti-tumor activities. Thus, MeSNs usually exhibit synergistic antitumor properties. Finally, future expectations and challenges of MeSNs in the research of translational medicine are spotlighted.
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Affiliation(s)
- Weidong Fei
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Meng Zhang
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Xiaoyu Fan
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Sydney, 2006, Australia
| | - Yiqing Ye
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Mengdan Zhao
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Caihong Zheng
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Yangyang Li
- Key Laboratory of Women's Reproductive Health Research of Zhejiang Province, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.
| | - Xiaoling Zheng
- Department of Pharmacy, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.
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25
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Sarkar AS, Stratakis E. Dispersion behaviour of two dimensional monochalcogenides. J Colloid Interface Sci 2021; 594:334-341. [PMID: 33773385 DOI: 10.1016/j.jcis.2021.02.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 02/03/2021] [Accepted: 02/18/2021] [Indexed: 11/15/2022]
Abstract
Solution processable two-dimensional (2D) materials have provided an ideal platform for both fundamental studies and wearable electronic applications. Apart from graphene and 2D dichalcogenides, IVA-VI metal monochalcogenides (MMCs) has emerged recently as a promising candidate for next generation electronic applications. However, the dispersion behavior, which is crucial for the quality, solubility and stability of MMCs, has been quite unexplored. Here, the exfoliation and the dispersion behavior of Germanium (II) monosulfide (GeS) and Tin (II) monosulfide (SnS) nanosheets has been investigated in a wide range of organic solvents. Nine different organic solvents were examined and analyzed, considering the solvent polarity, surface tension, and Hansen solubility parameters. A significant yield of isolated GeS and SnS flakes, namely ~16.4 and ~23.08 μg/ml in 2-propanol and N-Methyl-2-pyrrolidone respectively were attained. The isolated flakes are few-layers nanosheets with lateral sizes over a few hundreds of nanometers. The MMC colloids exhibit long-term stability, suggesting the MMCs applicability for scalable solution processable printed electronic device applications.
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Affiliation(s)
- Abdus Salam Sarkar
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion, 700 13 Crete, Greece.
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion, 700 13 Crete, Greece; Physics Department, University of Crete, Heraklion, 710 03 Crete, Greece.
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26
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A Review of the Synthesis, Properties, and Applications of Bulk and Two-Dimensional Tin (II) Sulfide (SnS). APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11052062] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tin(II) sulfide (SnS) is an attractive semiconductor for solar energy conversion in thin film devices due to its bandgap of around 1.3 eV in its orthorhombic polymorph, and a band gap energy of 1.5–1.7 eV for the cubic polymorph—both of which are commensurate with efficient light harvesting, combined with a high absorption coefficient (10−4 cm−1) across the NIR–visible region of the electromagnetic spectrum, leading to theoretical power conversion efficiencies >30%. The high natural abundance and a relative lack of toxicity of its constituent elements means that such devices could potentially be inexpensive, sustainable, and accessible to most nations. SnS exists in its orthorhombic form as a layer structure similar to black phosphorus; therefore, the bandgap energy can be tuned by thinning the material to nanoscale dimensions. These and other properties enable SnS applications in optoelectronic devices (photovoltaics, photodetectors), lithium- and sodium-ion batteries, and sensors among others with a significant potential for a variety of future applications. The synthetic routes, structural, optical and electronic properties as well as their applications (in particular photonic applications and energy storage) of bulk and 2D tin(II) sulfide are reviewed herein.
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27
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Nasane MP, Rondiya SR, Jadhav CD, Rahane GR, Cross RW, Jathar S, Jadhav Y, Barma S, Nilegave D, Jadkar V, Rokade A, Funde A, Chavan PG, Hoye RLZ, Dzade NY, Jadkar S. An interlinked computational–experimental investigation into SnS nanoflakes for field emission applications. NEW J CHEM 2021. [DOI: 10.1039/d1nj00902h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Layered binary semiconductor materials have attracted significant interest as field emitters due to their low work function, mechanical stability, and high thermal and electrical conductivity.
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28
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Sarkar AS, Stratakis E. Recent Advances in 2D Metal Monochalcogenides. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001655. [PMID: 33173730 PMCID: PMC7610304 DOI: 10.1002/advs.202001655] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/24/2020] [Indexed: 06/11/2023]
Abstract
The family of emerging low-symmetry and structural in-plane anisotropic two-dimensional (2D) materials has been expanding rapidly in recent years. As an important emerging anisotropic 2D material, the black phosphorene analog group IVA-VI metal monochalcogenides (MMCs) have been surged recently due to their distinctive crystalline symmetries, exotic in-plane anisotropic electronic and optical response, earth abundance, and environmentally friendly characteristics. In this article, the recent research advancements in the field of anisotropic 2D MMCs are reviewed. At first, the unique wavy crystal structures together with the optical and electronic properties of such materials are discussed. The Review continues with the various methods adopted for the synthesis of layered MMCs including micromechanical and liquid phase exfoliation as well as physical vapor deposition. The last part of the article focuses on the application of the structural anisotropic response of 2D MMCs in field effect transistors, photovoltaic cells nonlinear optics, and valleytronic devices. Besides presenting the significant research in the field of this emerging class of 2D materials, this Review also delineates the existing limitations and discusses emerging possibilities and future prospects.
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Affiliation(s)
- Abdus Salam Sarkar
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklionCrete700 13Greece
| | - Emmanuel Stratakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology‐HellasHeraklionCrete700 13Greece
- Physics DepartmentUniversity of CreteHeraklionCrete710 03Greece
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29
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Krishnamurthi V, Khan H, Ahmed T, Zavabeti A, Tawfik SA, Jain SK, Spencer MJS, Balendhran S, Crozier KB, Li Z, Fu L, Mohiuddin M, Low MX, Shabbir B, Boes A, Mitchell A, McConville CF, Li Y, Kalantar-Zadeh K, Mahmood N, Walia S. Liquid-Metal Synthesized Ultrathin SnS Layers for High-Performance Broadband Photodetectors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004247. [PMID: 32960475 DOI: 10.1002/adma.202004247] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/09/2020] [Indexed: 06/11/2023]
Abstract
Atomically thin materials face an ongoing challenge of scalability, hampering practical deployment despite their fascinating properties. Tin monosulfide (SnS), a low-cost, naturally abundant layered material with a tunable bandgap, displays properties of superior carrier mobility and large absorption coefficient at atomic thicknesses, making it attractive for electronics and optoelectronics. However, the lack of successful synthesis techniques to prepare large-area and stoichiometric atomically thin SnS layers (mainly due to the strong interlayer interactions) has prevented exploration of these properties for versatile applications. Here, SnS layers are printed with thicknesses varying from a single unit cell (0.8 nm) to multiple stacked unit cells (≈1.8 nm) synthesized from metallic liquid tin, with lateral dimensions on the millimeter scale. It is reveal that these large-area SnS layers exhibit a broadband spectral response ranging from deep-ultraviolet (UV) to near-infrared (NIR) wavelengths (i.e., 280-850 nm) with fast photodetection capabilities. For single-unit-cell-thick layered SnS, the photodetectors show upto three orders of magnitude higher responsivity (927 A W-1 ) than commercial photodetectors at a room-temperature operating wavelength of 660 nm. This study opens a new pathway to synthesize reproduceable nanosheets of large lateral sizes for broadband, high-performance photodetectors. It also provides important technological implications for scalable applications in integrated optoelectronic circuits, sensing, and biomedical imaging.
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Affiliation(s)
- Vaishnavi Krishnamurthi
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Hareem Khan
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Taimur Ahmed
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Ali Zavabeti
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Department of Chemical Engineering, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | | | - Shubhendra Kumar Jain
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Sensor Devices and Metrology Group, CSIR-National Physical Laboratory (CSIR-NPL), Dr K. S. Krishnan Road, New Delhi, 110012, India
- Academy of Scientific & Innovative Research, (AcSIR), CSIR-HRDC Campus, Ghaziabad, Uttar Pradesh, 201002, India
| | - Michelle J S Spencer
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies, School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia
| | | | - Kenneth B Crozier
- School of Physics, The University of Melbourne, Melbourne, Victoria, 3010, Australia
- Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria, 3010, Australia
- Australian Research Council (ARC) Centre of Excellence for Transformative Meta-Optical Systems, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Ziyuan Li
- Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT, 2601, Australia
| | - Lan Fu
- Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT, 2601, Australia
- Australian Research Council (ARC) Centre of Excellence for Transformative Meta-Optical Systems, The Australian National University, Canberra, ACT, 2601, Australia
| | - Md Mohiuddin
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Mei Xian Low
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Babar Shabbir
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria, 3800, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria, 3800, Australia
| | - Andreas Boes
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Arnan Mitchell
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | | | - Yongxiang Li
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Kourosh Kalantar-Zadeh
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Nasir Mahmood
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
| | - Sumeet Walia
- School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility, RMIT University, 124 La Trobe Street, Melbourne, Victoria, 3001, Australia
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30
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Zhang B, Fu X, Song L, Wu X. Computational Screening toward Hydrogen Evolution Reaction by the Introduction of Point Defects at the Edges of Group IVA Monochalcogenides: A First-Principles Study. J Phys Chem Lett 2020; 11:7664-7671. [PMID: 32835487 DOI: 10.1021/acs.jpclett.0c02047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Exploring materials with high hydrogen evolution reaction (HER) performance is of importance for the development of clean hydrogen energy, and the defects on the surfaces of catalysts are essential. In this work, we evaluate the HER performance among group IVA monochalcogenides MXs (M = Ge/Sn, X = S/Se) with M/X point defects on the edges. Compared with basal planes and bare edges, the GeS edge with Ge vacancy (ΔGH* = 0.016 eV), GeSe edge with Se vacancy (ΔGH* = 0.073 eV), and SnSe edge with Sn vacancy (ΔGH* = -0.037 eV) hold the best HER performances, which are comparable to or even better than the value for Pt (-0.07 eV). Furthermore, the relationships between ΔGH* and p-band centers of considered models are summarized. The stability of proposed electrocatalysts are analyzed by vacancy-formation energy and strain engineering. In summary, the HER performance of MXs is greatly improved by introduction of point defects at the edges, which is promising for their use as electrocatalysts for the conversion and storage of energy in the future.
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Affiliation(s)
- Bo Zhang
- State Key Laboratory of Information Photonics and Optical Communications, and School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiuli Fu
- State Key Laboratory of Information Photonics and Optical Communications, and School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China
| | - Li Song
- Natl Synchrotron Radiat Lab, CAS Ctr Excellence Nanosci, CAS Key Lab Strongly Coupled Quantum Matter Phys, Univ Sci & Technol China, Hefei 230029, Anhui P. R. China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230026, P. R. China
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31
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Xie Z, Lu R, Zhu Y, Peng M, Fan T, Ren P, Wang B, Kang L, Liu X, Li S, Cui H. Liquid-phase exfoliation of black sesame to create a nanoplatform for in vitro photoluminescence and photothermal therapy. Nanomedicine (Lond) 2020; 15:2041-2052. [PMID: 32867583 DOI: 10.2217/nnm-2020-0151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The present study aims to apply the facile liquid-phase exfoliation (LPE) strategy to fabricate 2D organic materials and thus to broaden the family of biocompatible and multifunctional 2D materials. Materials & methods: 2D material-organic melanin and cellulose nanosheets were synthesized from black sesame hull using LPE. Photoluminescence and photothermal properties of the nanosheets were assessed, as well as stability and cell killing ability. Results: The prepared 2D nanoplatform exhibited broad and multiple photoluminescent emission bands. It also demonstrated efficient photothermal cancer therapy with excellent biocompatibility. Conclusion: The present study could open an avenue in exfoliating organic materials using the LPE strategy. This could make the fabrication of multifunctional 2D organic materials more efficient and broaden the family of biocompatible 2D nanomaterials.
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Affiliation(s)
- Zhongjian Xie
- Shenzhen International Institute for Biomedical Research, Shenzhen, Guangdong, 518116, PR China
| | - Ruitao Lu
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, Guangdong, PR China
| | - Yao Zhu
- Department of Ultrasonography, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science & Technology, Shenzhen, Guangdong, 518020, PR China
| | - Minhua Peng
- Shenzhen International Institute for Biomedical Research, Shenzhen, Guangdong, 518116, PR China.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, PR China
| | - Taojian Fan
- Key Laboratory of Optoelectronic Devices & Systems of Ministry of Education & Guangdong Province, Institute of Microscale Optoelectronics, & Otolaryngology Department & Biobank of the First Affiliated Hospital, Shenzhen Second People's Hospital, Health Science Center, Shenzhen University, Shenzhen, 518060, PR China
| | - Peigen Ren
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, PR China
| | - Bing Wang
- College of Physics & Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Lin Kang
- Clinical Medical Research Center, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, Guangdong, PR China.,Department of Endocrinology, Shenzhen People's Hospital, Shenzhen, 518020, Guangdong, PR China
| | - Xiaoyun Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, 215 West Heping Road, Shijiazhuang, Hebei, 050000, PR China
| | - Sha Li
- Department of Anatomy, Hebei Medical University, Shijiazhuang, PR China
| | - Huixian Cui
- Department of Anatomy, Hebei Medical University, Shijiazhuang, PR China
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32
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Liquid metal-based synthesis of high performance monolayer SnS piezoelectric nanogenerators. Nat Commun 2020; 11:3449. [PMID: 32651367 PMCID: PMC7351749 DOI: 10.1038/s41467-020-17296-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 06/18/2020] [Indexed: 11/09/2022] Open
Abstract
The predicted strong piezoelectricity for monolayers of group IV monochalcogenides, together with their inherent flexibility, makes them likely candidates for developing flexible nanogenerators. Within this group, SnS is a potential choice for such nanogenerators due to its favourable semiconducting properties. To date, access to large-area and highly crystalline monolayer SnS has been challenging due to the presence of strong inter-layer interactions by the lone-pair electrons of S. Here we report single crystal across-the-plane and large-area monolayer SnS synthesis using a liquid metal-based technique. The characterisations confirm the formation of atomically thin SnS with a remarkable carrier mobility of ~35 cm2 V−1 s−1 and piezoelectric coefficient of ~26 pm V−1. Piezoelectric nanogenerators fabricated using the SnS monolayers demonstrate a peak output voltage of ~150 mV at 0.7% strain. The stable and flexible monolayer SnS can be implemented into a variety of systems for efficient energy harvesting. The presence of strong inter-layer interactions has hindered the synthesis efforts towards large-area and highly crystalline monolayer SnS. Here, the authors report synthesis of large-area monolayer SnS using a liquid metal-based technique, and fabricate piezoelectric nano-generators with average peak output voltage of 150 mV at 0.7% strain.
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33
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Structural Transformation of SnS
2
to SnS by Mo Doping Produces Electro/Photocatalyst for Hydrogen Production. Chemistry 2020; 26:6679-6685. [DOI: 10.1002/chem.202000366] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Indexed: 11/07/2022]
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34
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Lee H, Yang W, Tan J, Park J, Shim SG, Park YS, Yun JW, Kim KM, Moon J. High-Performance Phase-Pure SnS Photocathodes for Photoelectrochemical Water Splitting Obtained via Molecular Ink-Derived Seed-Assisted Growth of Nanoplates. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15155-15166. [PMID: 32167272 DOI: 10.1021/acsami.9b23045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although tin monosulfide (SnS) is one of the promising earth-abundant semiconducting materials for photoelectrochemical water splitting, the performance of SnS photocathodes remains poor. Herein, we report a stepwise approach for the fabrication of highly efficient photocathodes based on SnS nanoplates via elaborate modulation of molecular solutions. It is demonstrated that phase-pure SnS nanoplates without detrimental secondary phases (such as SnS2 and Sn2S3) can be readily obtained by adjusting the amounts of Sn and S in the precursor solution. Additionally, the orientation of SnS nanoplates is controlled by implementing different types of SnS seed layers. The orientations of the SnS seed layers are changed according to the molecular shapes of the Sn-S bonds in the molecular solutions, depending on the relative nucleophilicity of the molecular moieties formed by specific thiol-amine reactions. The molecular Sn-S sheets in the seed ink was obtained by the reaction in a solvent mixture of thiogylcolic acid and ethanolamine. By contrast, the short Sn-S molecular rods result from the reaction in a solvent mixture of 2-mercaptoethanol and ethylenediamine. Interestingly, the relatively short rodlike morphology of the SnS seed induces the growth of SnS nanostructures faceted by preferred (111) and (101) planes, leading to fast charge transport. With the formation of a proper band alignment with n-type CdS and TiO2, the preferred (111)- and (101)-oriented SnS nanoplate-based photocathode exhibited a photocurrent density of -19 mA cm-2 at 0 V versus a reversible hydrogen electrode, establishing a new benchmark for SnS photocathodes.
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Affiliation(s)
- Hyungsoo Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Wooseok Yang
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jeiwan Tan
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jaemin Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sang Gi Shim
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Young Sun Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Ju Won Yun
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyung Min Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jooho Moon
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
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35
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Lange RZ, Synnatschke K, Qi H, Huber N, Hofer G, Liang B, Huck C, Pucci A, Kaiser U, Backes C, Schlüter AD. Enriching and Quantifying Porous Single Layer 2D Polymers by Exfoliation of Chemically Modified van der Waals Crystals. Angew Chem Int Ed Engl 2020; 59:5683-5695. [PMID: 31821673 PMCID: PMC7154524 DOI: 10.1002/anie.201912705] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/26/2019] [Indexed: 01/11/2023]
Abstract
2D polymer sheets with six positively charged pyrylium groups at each pore edge in a stacked single crystal can be transformed into a 2D polymer with six pyridines per pore by exposure to gaseous ammonia. This reaction furnishes still a crystalline material with tunable protonation degree at regular nano-sized pores promising as separation membrane. The exfoliation is compared for both 2D polymers with the latter being superior. Its liquid phase exfoliation yields nanosheet dispersions, which can be size-selected using centrifugation cascades. Monolayer contents of ≈30 % are achieved with ≈130 nm sized sheets in mg quantities, corresponding to tens of trillions of monolayers. Quantification of nanosheet sizes, layer number and mass shows that this exfoliation is comparable to graphite. Thus, we expect that recent advances in exfoliation of graphite or inorganic crystals (e.g. scale-up, printing etc.) can be directly applied to this 2D polymer as well as to covalent organic frameworks.
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Affiliation(s)
- Ralph Z. Lange
- Institute for PolymersETH ZürichVladimir-Prelog-Weg 58093ZürichSwitzerland
| | - Kevin Synnatschke
- Institute of Physical ChemistryHeidelberg UniversityIm Neuenheimer Feld 25369120HeidelbergGermany
| | - Haoyuan Qi
- Central Facility of Electron MicroscopyElectron Microscopy Group of Materials ScienceUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
| | - Niklas Huber
- Institute for PolymersETH ZürichVladimir-Prelog-Weg 58093ZürichSwitzerland
| | - Gregor Hofer
- Institute for PolymersETH ZürichVladimir-Prelog-Weg 58093ZürichSwitzerland
- X-ray Platform D-MATLDepartment of MaterialsETH ZürichVladimir-Prelog-Weg 58093ZürichSwitzerland
| | - Baokun Liang
- Central Facility of Electron MicroscopyElectron Microscopy Group of Materials ScienceUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
| | - Christian Huck
- Kirchhoff Institute of PhysicsHeidelberg UniversityIm Neuenheimer Feld 22769120HeidelbergGermany
| | - Annemarie Pucci
- Kirchhoff Institute of PhysicsHeidelberg UniversityIm Neuenheimer Feld 22769120HeidelbergGermany
| | - Ute Kaiser
- Central Facility of Electron MicroscopyElectron Microscopy Group of Materials ScienceUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
| | - Claudia Backes
- Institute of Physical ChemistryHeidelberg UniversityIm Neuenheimer Feld 25369120HeidelbergGermany
| | - A. Dieter Schlüter
- Institute for PolymersETH ZürichVladimir-Prelog-Weg 58093ZürichSwitzerland
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36
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Ramin Moayed MM, Li F, Beck P, Schober JC, Klinke C. Anisotropic circular photogalvanic effect in colloidal tin sulfide nanosheets. NANOSCALE 2020; 12:6256-6262. [PMID: 32159562 DOI: 10.1039/d0nr01189d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tin sulfide promises very interesting properties such as a high optical absorption coefficient and a small band gap, while being less toxic compared to other metal chalcogenides. However, the limitations in growing atomically thin structures of tin sulfide hinder the experimental exploration of these properties. Due to the flexibility of the colloidal synthesis, it is possible to synthesize very thin and at the same time large nanosheets. Electrical transport measurements show that these nanosheets can function as field-effect transistors with an on/off ratio of more than 105 at low temperatures and p-type behavior. The temperature dependency of the charge transport reveals that defects in the crystal are responsible for the formation of holes as majority carriers. During illumination with circularly polarized light, these crystals generate a helicity dependent photocurrent at zero-volt bias, since their symmetry is broken by asymmetric interfaces (substrate and vacuum). Further, the observed circular photogalvanic effect shows a pronounced in-plane anisotropy, with a higher photocurrent along the armchair direction, originating from the higher absorption coefficient in this direction. Our new insights show the potential of tin sulfide for new functionalities in electronics and optoelectronics, for instance as polarization sensors.
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Affiliation(s)
- Mohammad Mehdi Ramin Moayed
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany and Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Fu Li
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | - Philip Beck
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | | | - Christian Klinke
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany and Department of Chemistry, Swansea University - Singleton Park, Swansea SA2 8PP, UK and Institute of Physics, University of Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany.
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37
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Hess P. Thickness of elemental and binary single atomic monolayers. NANOSCALE HORIZONS 2020; 5:385-399. [PMID: 32118242 DOI: 10.1039/c9nh00658c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The thickness of monolayers is a fundamental property of two-dimensional (2D) materials that has not found the necessary attention. It plays a crucial role in their mechanical behavior, the determination of related physical properties such as heat transfer, and especially the properties of multilayer systems. Measurements of the thickness of free-standing monolayers are widely lacking and notoriously too large. Consistent thicknesses have been reported for single layers of graphene, boronitrene, and SiC derived from interlayer spacing measured by X-ray diffraction in multilayer systems, first-principles calculations of the interlayer spacing, and tabulated van der Waals (vdW) diameters. Furthermore, the electron density-based volume model agrees with the geometric slab model for graphene and boronitrene. For other single-atom monolayers DFT calculations and molecular dynamics (MD) simulations deliver interlayer distances that are often much smaller than the vdW diameter, owing to further electrostatic and (weak) covalent interlayer interaction. Monolayers strongly bonded to a surface also show this effect. If only weak vdW forces exist, the vdW diameter delivers a reasonable thickness not only for free-standing monolayers but also for few-layer systems and adsorbed monolayers. Adding the usually known corrugation effect of buckled or puckered monolayers to the vdW diameter delivers an upper limit of the monolayer thickness. The study presents a reference database of thickness values for elemental and binary group-IV and group-V monolayers, as well as binary III-V and IV-VI compounds.
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Affiliation(s)
- Peter Hess
- Institute of Physical Chemistry, University of Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany.
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38
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Lange RZ, Synnatschke K, Qi H, Huber N, Hofer G, Liang B, Huck C, Pucci A, Kaiser U, Backes C, Schlüter AD. Enriching and Quantifying Porous Single Layer 2D Polymers by Exfoliation of Chemically Modified van der Waals Crystals. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912705] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ralph Z. Lange
- Institute for Polymers ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Kevin Synnatschke
- Institute of Physical Chemistry Heidelberg University Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Haoyuan Qi
- Central Facility of Electron Microscopy Electron Microscopy Group of Materials Science Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Niklas Huber
- Institute for Polymers ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Gregor Hofer
- Institute for Polymers ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
- X-ray Platform D-MATL Department of Materials ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Baokun Liang
- Central Facility of Electron Microscopy Electron Microscopy Group of Materials Science Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Christian Huck
- Kirchhoff Institute of Physics Heidelberg University Im Neuenheimer Feld 227 69120 Heidelberg Germany
| | - Annemarie Pucci
- Kirchhoff Institute of Physics Heidelberg University Im Neuenheimer Feld 227 69120 Heidelberg Germany
| | - Ute Kaiser
- Central Facility of Electron Microscopy Electron Microscopy Group of Materials Science Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Claudia Backes
- Institute of Physical Chemistry Heidelberg University Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - A. Dieter Schlüter
- Institute for Polymers ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
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39
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Bafekry A, Shojaei F, Obeid MM, Ghergherehchi M, Nguyen C, Oskouian M. Two-dimensional silicon bismotide (SiBi) monolayer with a honeycomb-like lattice: first-principles study of tuning the electronic properties. RSC Adv 2020; 10:31894-31900. [PMID: 35518134 PMCID: PMC9056497 DOI: 10.1039/d0ra05026a] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 08/05/2020] [Indexed: 12/18/2022] Open
Abstract
Using density functional theory, we investigate a novel two-dimensional silicon bismotide (SiBi) that has a layered GaSe-like crystal structure. Ab initio molecular dynamic simulations and phonon dispersion calculations suggest its good thermal and dynamical stability. The SiBi monolayer is a semiconductor with a narrow indirect bandgap of 0.4 eV. Our results show that the indirect bandgap decreases as the number of layers increases, and when the number of layers is more than six layers, direct-to-indirect bandgap switching occurs. The SiBi bilayer is found to be very sensitive to an E-field. The bandgap monotonically decreases in response to uniaxial and biaxial compressive strain, and reaches 0.2 eV at 5%, while at 6%, the semiconductor becomes a metal. For both uniaxial and biaxial tensile strains, the material remains a semiconductor and indirect-to-direct bandgap transition occurs at a strain of 3%. Compared to a SiBi monolayer with a layer thickness of 4.89 Å, the bandgap decreases with either increasing or decreasing layer thickness, and at a thicknesses of 4.59 to 5.01 Å, the semiconductor-to-metal transition happens. In addition, under pressure, the semiconducting character of the SiBi bilayer with a 0.25 eV direct bandgap is preserved. Our results demonstrate that the SiBi nanosheet is a promising candidate for designing high-speed low-dissipation devices. The modulation of the electronic properties of SiBi monolayer via external means, including layer thickness, electric field and mechanical strain are explored with DFT method.![]()
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Affiliation(s)
- Asadollah Bafekry
- Department of Physics
- University of Guilan
- 41335-1914 Rasht
- Iran
- Department of Physics
| | - Fazel Shojaei
- Department of Chemistry
- Faculty of Sciences
- Persian Gulf University
- Bushehr 75169
- Iran
| | - Mohammed M. Obeid
- Department of Ceramics
- College of Materials Engineering
- University of Babylon
- Hilla
- Iraq
| | - Mitra Ghergherehchi
- College of Electronic and Electrical Engineering
- Sungkyunkwan University
- Suwon
- Korea
| | - C. Nguyen
- Institute of Research and Development
- Duy Tan University
- Da Nang 550000
- Vietnam
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40
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Gawai UP, Gaikwad DK, Patil SL, Pandey KK, Lalla NP, Dole BN. Synthesis, local structure and optical property studies of α-SnS microrods by synchrotron X-ray pair distribution function and micro-Raman shift. RSC Adv 2020; 10:21277-21282. [PMID: 35518770 PMCID: PMC9054532 DOI: 10.1039/d0ra03586f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 05/20/2020] [Indexed: 01/12/2023] Open
Abstract
The PDF refinement shows layer structure of SnS-A with two distinct bond lengths, one nearly parallel to the ‘a’ axis and another perpendicular to the ‘a’ axis, it corresponds to bond lengths of 2.62528 (38) Å and 2.66204 (03) Å.
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Affiliation(s)
- U. P. Gawai
- Department of Physics
- YCSPM's
- DDSP
- Arts Commerce and Science College
- Jalgaon-425109
| | - D. K. Gaikwad
- Department of Physics
- ACS College
- Dharangaon-425105
- India
| | - S. L. Patil
- Department of Physics
- YCSPM's
- DDSP
- Arts Commerce and Science College
- Jalgaon-425109
| | - K. K. Pandey
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | | | - B. N. Dole
- Advanced Materials Research Laboratory
- Department of Physics
- Dr Babasaheb Ambedkar Marathwada University
- Auranagabad-431004
- India
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41
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Li H, Xu P, Lu J. Sub-10 nm tunneling field-effect transistors based on monolayer group IV mono-chalcogenides. NANOSCALE 2019; 11:23392-23401. [PMID: 31793968 DOI: 10.1039/c9nr07590a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of air-stable channels with a high on-state current (Ion) is in high demand for the feasible application of TFETs. Monolayer group IV mono-chalcogenides (i.e., GeS, GeSe, SnS, and SnSe), as emerging air-stable atomic-thin semiconductors, are potential channels for sub-10 nm tunneling field-effect transistors due to their high carrier mobility and anisotropic electronic properties. Herein, we investigated the performances of sub-10 nm monolayer (ML) group IV mono-chalcogenide TFETs using ab initio quantum transport simulation. The ML GeSe TFET exhibited the best performance with regards to both high Ion and low leakage current (Ileak) among the four devices, followed by the ML SnSe TFET with a high Ion. The Ion of the optimal ML GeSe TFET with a physical gate length of Lg = 10 nm surpasses the International Technology Roadmap for Semiconductors (ITRS, 2013 Edition) requirements for high-performance (HP) and low-power (LP) devices, simultaneously, and that of the ML SnSe TFET with Lg = 10 nm surpasses the requirement of ITRS HP devices. In combination with our former works, we suggest an Eg of 0.77-1.19 eV and of 0.11-0.15m0 to search for competitive 2D channels with a high Ion for HP application in TFET devices with a planar homogeneous p-i-n architecture.
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Affiliation(s)
- Hong Li
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, P. R. China.
| | - Peipei Xu
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, P. R. China.
| | - Jing Lu
- State Key Laboratory of Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China and Collaborative Innovation Center of Quantum Matter, Beijing 100871, P. R. China and Beijing Key Laboratory for Magnetoelectric Materials and Devices, Peking University, Beijing 100871, P. R. China.
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42
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Park M, Choi JS, Yang L, Lee H. Raman Spectra Shift of Few-Layer IV-VI 2D Materials. Sci Rep 2019; 9:19826. [PMID: 31863038 PMCID: PMC6925276 DOI: 10.1038/s41598-019-55577-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/21/2019] [Indexed: 11/08/2022] Open
Abstract
Raman spectroscopy is the most commonly used method to investigate structures of materials. Recently, few-layered IV-VI 2D materials (SnS, SnSe, GeS, and GeSe) have been found and ignited significant interest in electronic and optical applications. However, unlike few-layer graphene, in which its interlayer structures such as the number of its layers are confirmed through measurement of the Raman scattering, few-layer IV-VI 2D materials have not yet been developed to the point of understanding their interlayer structure. Here we performed first-principles calculations on Raman spectroscopy for few-layer IV-VI 2D materials. In addition to achieving consistent results with measurements of bulk structures, we revealed significant red and blue shifts of characteristic Raman modes up to 100 cm-1 associated with the layer number. These shifts of lattice vibrational modes originate from the change of the bond lengths between the metal atoms and chalcogen atoms through the change of the interlayer interactions. Particularly, our study shows weak covalent bonding between interlayers, making the evolution of Raman signals according to the thickness different from other vdW materials. Our results suggest a new way for obtaining information of layer structure of few-layer IV-VI 2D materials through Raman spectroscopy.
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Affiliation(s)
- Minwoo Park
- Department of Physics, Washington University in St. Louis, St. Louis, Missouri, 63136, USA
- Department of Physics, Konkuk University, Seoul, 05029, Korea
| | - Jin Sik Choi
- Department of Physics, Konkuk University, Seoul, 05029, Korea
| | - Li Yang
- Department of Physics, Washington University in St. Louis, St. Louis, Missouri, 63136, USA.
| | - Hoonkyung Lee
- Department of Physics, Konkuk University, Seoul, 05029, Korea.
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43
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Emerging Two‐Dimensional Nanomaterials for Cancer Therapy. Chemphyschem 2019; 20:2417-2433. [DOI: 10.1002/cphc.201900551] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/24/2019] [Indexed: 01/06/2023]
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44
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Xie Z, Chen S, Duo Y, Zhu Y, Fan T, Zou Q, Qu M, Lin Z, Zhao J, Li Y, Liu L, Bao S, Chen H, Fan D, Zhang H. Biocompatible Two-Dimensional Titanium Nanosheets for Multimodal Imaging-Guided Cancer Theranostics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22129-22140. [PMID: 31144494 DOI: 10.1021/acsami.9b04628] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Photothermal therapy (PTT) based on two-dimensional (2D) nanomaterials has shown significant potential in cancer treatment. However, developing 2D nanomaterial-based theranostic agents with good biocompatibility and high therapeutic efficiency remains a key challenge. Bulk titanium (Ti) has been widely used as biomedical materials for their reputable biocompatibility, whereas nanosized Ti with a biological function remains unexplored. In this work, the 2D Ti nanosheets (NSs) are successfully exfoliated from nonlayer bulk Ti and utilized as an efficient theranostic nanoplatform for dual-modal computed tomography/photoacoustic (CT/PA) imaging-navigated PTT. Besides the excellent biocompatibility obtained by TiNSs as expected, they are found to show strong absorption ability with an extinction coefficient of 20.8 L g-1 cm-1 and high photothermal conversion ability with an efficiency of 61.5% owing to localized surface plasmon resonances, which exceeds most of other well-known photothermal agents, making it quite promising for PTT against cancer. Furthermore, the metallic property and light-heat-acoustic transformation endow 2D Ti with the strong CT/PA imaging signal and efficient cancer therapy, simultaneously. This work highlights the enormous potential of nanosized Ti in both the diagnosis and treatment of cancer. As a paradigm, this study also paves a new avenue for the elemental transition-metal-based cancer theranostics.
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Affiliation(s)
- Zhongjian Xie
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Shiyou Chen
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Yanhong Duo
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Yao Zhu
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Taojian Fan
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Qingshuang Zou
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen People's Hospital , Second Clinical Medical College of Jinan University , Shenzhen , Guangdong Province 518208 , P. R. China
| | - Mengmeng Qu
- Research Center for Clinical & Translational Medicine , Beijing 302 Hospital , Beijing 100039 , China
| | - Zhitao Lin
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Jinlai Zhao
- Faculty of Information Technology , Macau University of Science and Technology , Avenida Wai Long , Taipa 999078 , Macau , P. R. China
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology , Guangdong Research Center for Interfacial Engineering of Functional Materials , Shenzhen 518060 , P. R. China
| | - Yang Li
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen People's Hospital , Second Clinical Medical College of Jinan University , Shenzhen , Guangdong Province 518208 , P. R. China
| | - Liping Liu
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen People's Hospital , Second Clinical Medical College of Jinan University , Shenzhen , Guangdong Province 518208 , P. R. China
| | - Shiyun Bao
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen People's Hospital , Second Clinical Medical College of Jinan University , Shenzhen , Guangdong Province 518208 , P. R. China
| | - Hong Chen
- School of Materials Science and Energy Engineering , Foshan University , Foshan 528000 , China
| | - Dianyuan Fan
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen People's Hospital , Second Clinical Medical College of Jinan University , Shenzhen , Guangdong Province 518208 , P. R. China
| | - Han Zhang
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China
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Hu Z, Ding Y, Hu X, Zhou W, Yu X, Zhang S. Recent progress in 2D group IV-IV monochalcogenides: synthesis, properties and applications. NANOTECHNOLOGY 2019; 30:252001. [PMID: 30776787 DOI: 10.1088/1361-6528/ab07d9] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Coordination-related, 2D structural phase transitions are a fascinating facet of 2D materials with structural degeneracy. Phosphorene and its new phases, exhibiting unique electronic properties, have received considerable attention. The 2D group IV-IV monochalcogenides (i.e. GeS, GeSe, SnS and SnSe) like black phosphorous possess puckered layered orthorhombic structure. The 2D group IV-IV monochalcogenides with advantages of earth-abundance, less toxicity, environmental compatibility and chemical stability, can be widely used in optoelectronics, piezoelectrics, photodetectors, sensors, Li-batteries and thermoelectrics. In this review, we summarized recent research progress in theory and experiment, which studies the fundamental properties, applications and fabrication of 2D group IV-IV monochalcogenides and their new phases, and brings new perspectives and challenges for the future of this emerging field.
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Affiliation(s)
- Ziyu Hu
- College of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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46
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Dwyer JD, Diaz EJ, Webber TE, Katzenberg A, Modestino MA, Aydil ES. Quantum confinement in few layer SnS nanosheets. NANOTECHNOLOGY 2019; 30:245705. [PMID: 30849771 DOI: 10.1088/1361-6528/ab0e3e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Orthorhombic tin monosulfide (SnS) consists of layers of covalently bound Sn and S atoms held together by weak van der Waals forces and is a stable two-dimensional material with potentially useful properties in emerging applications such as valleytronics. Large-scale sustainable synthesis of few-layer (e.g., 1-10 layers) SnS is a challenge, which also slows progress in understanding their properties as a function of number of layers. Herein we describe solvothermal synthesis of SnS in water or ethylene glycol. The latter yields a flower-like morphology where the petals are SnS nanoplates and sonication and separation of these flowers via differential centrifugation yields 1-10 layer SnS nanoplates. The direct optical absorption edges of these SnS nanoplates blue-shift due to quantum confinement from 1.33 to 1.88 eV as the thickness (number of layers) is decreased from ∼5 nm (10 layers) to ∼2 nm (4 layers).
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Affiliation(s)
- John D Dwyer
- St. Catherine University, Department of Chemistry and Biochemistry, 2004 Randolph Avenue, St. Paul, MN 55105, United States of America
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47
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Zhang Q, Feng Y, Chen X, Zhang W, Wu L, Wang Y. Designing a Novel Monolayer β-CSe for High Performance Photovoltaic Device: An Isoelectronic Counterpart of Blue Phosphorene. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E598. [PMID: 30979008 PMCID: PMC6523863 DOI: 10.3390/nano9040598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/05/2019] [Accepted: 04/06/2019] [Indexed: 01/30/2023]
Abstract
Using the first-principles method, an unmanufactured structure of blue-phosphorus-like monolayer CSe (β-CSe) was predicted to be stable. Slightly anisotropic mechanical characteristics in β-CSe sheet were discovered: it can endure an ultimate stress of 5.6 N/m at 0.1 along an armchair direction, and 5.9 N/m at 0.14 along a zigzag direction. A strain-sensitive transport direction was found in β-CSe, since β-CSe, as an isoelectronic counterpart of blue phosphorene (β-P), also possesses a wide indirect bandgap that is sensitive to the in-plane strain, and its carrier effective mass is strain-dependent. Its indirect bandgap character is robust, except that armchair-dominant strain can drive the indirect-direct transition. We designed a heterojunction by the β-CSe sheet covering α-CSe sheet. The band alignment of the α-CSe/β-CSe interface is a type-II van der Waals p-n heterojunction. An appreciable built-in electric field across the interface, which is caused by the charges transfering from β-CSe slab to α-CSe, renders energy bands bending, and it makes photo-generated carriers spatially well-separated. Accordingly, as a metal-free photocatalyst, α-CSe/β-CSe heterojunction was endued an enhanced solar-driven redox ability for photocatalytic water splitting via lessening the electron-hole-pair recombination. This study provides a fundamental insight regarding the designing of the novel structural phase for high-performance light-emitting devices, and it bodes well for application in photocatalysis.
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Affiliation(s)
- Qiang Zhang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOH), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
| | - Yajuan Feng
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOH), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
| | - Xuanyu Chen
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOH), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
| | - Weiwei Zhang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOH), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
| | - Lu Wu
- The First Sub⁻Institute, Nuclear Power Institute of China, Chengdu 610005, China.
| | - Yuexia Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOH), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
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48
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Sen R, Johari P. One-Dimensional-Sn 2X 3 (X = S, Se) as Promising Optoelectronic and Thermoelectronic Materials: A Comparison with Three-Dimensional-Sn 2X 3. ACS APPLIED MATERIALS & INTERFACES 2019; 11:12733-12744. [PMID: 30859805 DOI: 10.1021/acsami.8b18430] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ever since the discovery of two-dimensional (2D) material graphene, there has been huge interest in the exploration of low-dimensional materials that can be exfoliated from their three-dimensional counterpart with enriched properties due to quantum confinement. Two members of the Sn-S family, Pnma-SnS and P3̅ m1-SnS2 that possess a layered structure with 2D nanosheets stacked via weak van der Waals (vdW) interactions, have widely been studied in this regard. The other member, Pnma-Sn2S3, comprising one-dimensional (1D) nanochains bound via vdW interactions, has never been investigated in the view of exfoliated 1D analogue. In this work, we therefore comprehensively studied 1D-Sn2X3 (X = S and Se) nanochains and demonstrated them to be stable and exfoliable from their bulk counterpart. Further, it is also shown that the exfoliated 1D nanochains can easily be identified from their bulk counterpart using Raman, infrared, and X-ray spectroscopies. Our calculations predict a direct band gap of 2.35 eV (1.67 eV) for 1D-Sn2S3 (1D-Sn2Se3) nanochains under the Heyd, Scuseria, and Ernzerhof functional, with a broad absorption region lying between 2 and 8 eV, lower reflection, high charge-carrier mobility with ambipolar characteristics, as well as a larger value of the Seebeck coefficient and a smaller value of the thermal conductivity, resulting in a better thermoelectric figure of merit. These interesting electronic, optical, transport, and thermoelectric properties make 1D-Sn2X3 nanochains a potential candidate for the application in future optoelectronic and thermoelectronic devices, in fact, better than three-dimensional (3D)-Sn2X3 for few of the applications. Moreover, 3D-Sn2Se3 is also investigated in detail in this work, which to the best of our knowledge has not been done before.
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Affiliation(s)
- Raja Sen
- Department of Physics, School of Natural Sciences , Shiv Nadar University , Greater Noida , Gautam Buddha Nagar, Uttar Pradesh 201 314 , India
| | - Priya Johari
- Department of Physics, School of Natural Sciences , Shiv Nadar University , Greater Noida , Gautam Buddha Nagar, Uttar Pradesh 201 314 , India
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Li B, Wang T, Wang X, Wu X, Wang C, Miao F, Qin M, Wang W, Cao Y. Engineered Recombinant Proteins for Aqueous Ultrasonic Exfoliation and Dispersion of Biofunctionalized 2D Materials. Chemistry 2019; 25:7991-7997. [DOI: 10.1002/chem.201900716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Bing Li
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Tiankuo Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Xin Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Xin Wu
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Chenyu Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Feng Miao
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Meng Qin
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Wei Wang
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
| | - Yi Cao
- Collaborative Innovation Center of Advanced MicrostructuresNational Laboratory of Solid State Microstructure, Department of PhysicsNanjing University Nanjing 210093 P.R. China
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Li F, Ramin Moayed MM, Klein E, Lesyuk R, Klinke C. In-Plane Anisotropic Faceting of Ultralarge and Thin Single-Crystalline Colloidal SnS Nanosheets. J Phys Chem Lett 2019; 10:993-999. [PMID: 30764606 DOI: 10.1021/acs.jpclett.9b00251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The colloidal synthesis of large, thin two-dimensional (2D) nanosheets is fascinating but challenging, since the growth along the lateral and vertical dimensions needs to be controlled independently. In-plane anisotropy in 2D nanosheets is attracting more attention as well. We present a new synthesis for large colloidal single-crystalline SnS nanosheets with the thicknesses down to 7 nm and lateral sizes up to 8 μm. The synthesis uses trioctylphosphine-S (TOP-S) as sulfur source and oleic acid (with or without trioctylphosphine, TOP) as ligands. Upon adjusting the capping ligand amount, the growth direction can be switched between anisotropic directions (armchair and zigzag) and isotropic directions ("ladder" directions), leading to an edge-morphology anisotropy. This is the first report on solution-phase synthesis of large thin tin(II) sulfide (SnS) nanosheets (NSs) with tunable edge faceting. Furthermore, electronic transport measurements show strong dependency on the crystallographic directions confirming structural anisotropy.
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Affiliation(s)
- Fu Li
- Institute of Physical Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
| | - Mohammad Mehdi Ramin Moayed
- Institute of Physical Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
| | - Eugen Klein
- Institute of Physical Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
| | - Rostyslav Lesyuk
- Institute of Physical Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
- Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of NAS of Ukraine , Naukowa Str. 3b , Lviv 79060 , Ukraine
| | - Christian Klinke
- Institute of Physical Chemistry , University of Hamburg , Martin-Luther-King-Platz 6 , Hamburg 20146 , Germany
- Department of Chemistry , Swansea University , Singleton Park, Swansea SA2 8PP , United Kingdom
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