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Mabrouk S, Rinnert H, Balan L, Jasniewski J, Medjahdi G, Ben Chaabane R, Schneider R. Aqueous synthesis of core/shell/shell ZnSeS/Cu:ZnS/ZnS quantum dots and their use as a probe for the selective photoluminescent detection of Pb2+ in water. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Khan ZU, Uchiyama MK, Khan LU, Araki K, Goto H, Felinto MCFC, de Souza AO, de Brito HF, Gidlund M. Wide visible-range activatable fluorescence ZnSe:Eu 3+/Mn 2+@ZnS quantum dots: local atomic structure order and application as a nanoprobe for bioimaging. J Mater Chem B 2021; 10:247-261. [PMID: 34878486 DOI: 10.1039/d1tb01870a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The development of QDs-based fluorescent bionanoprobe for cellular imaging fundamentally relies upon the precise knowledge of particle-cell interaction, optical properties of QDs inside and outside of the cell, movement of a particle in and out of the cell, and the fate of particle. We reported engineering and physicochemical characterization of water-dispersible Eu3+/Mn2+ co-doped ZnSe@ZnS core/shell QDs and studied their potential as a bionanoprobe for biomedical applications, evaluating their biocompatibility, fluorescence behaviour by CytoViva dual mode fluorescence imaging, time-dependent uptake, endocytosis and exocytosis in RAW 264.7 macrophages. The oxidation state and local atomic structure of the Eu dopant studied by X-ray absorption fine structure (XAFS) analysis manifested that the Eu3+ ions occupied sites in both ZnSe and ZnS lattices for the core/shell QDs. A novel approach was developed to relieve the excitation constraint of wide bandgap ZnSe by co-incorporation of Eu3+/Mn2+ codopants, enabling the QDs to be excited at a wide UV-visible range. The QDs displayed tunable emission colors by a gradual increase in Eu3+ concentration at a fixed amount of Mn2+, systematically enhancing the Mn2+ emission intensity via energy transfer from the Eu3+ to Mn2+ ion. The ZnSe:Eu3+/Mn2+@ZnS QDs presented high cell viability above 85% and induced no cell activation. The detailed analyses of QDs-treated cells by dual mode fluorescence CytoViva microscopy confirmed the systematic color-tunable fluorescence and its intensity enhances as a function of incubation time. The QDs were internalized by the cells predominantly via macropinocytosis and other lipid raft-mediated endocytic pathways, retaining an efficient amount for 24 h. The unique color tunability and consistent high intensity emission make these QDs useful for developing a multiplex fluorescent bionanoprobe, activatable in wide-visible region.
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Affiliation(s)
- Zahid Ullah Khan
- Department of Immunology, Institute of Biomedical Sciences-IV, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil.,Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil
| | - Mayara Klimuk Uchiyama
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil
| | - Latif Ullah Khan
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil.,Synchrotron-light for Experimental Science and Applications in the Middle East (SESAME), P.O. Box 7, Allan 19252, Jordan.
| | - Koiti Araki
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil
| | - Hiro Goto
- Faculty of Medicine, University of São Paulo (USP), Zip Code 05403-000, São Paulo, SP, Brazil
| | | | - Ana Olivia de Souza
- Development and Innovation Laboratory, Butantan Institute, Zip Code 05503-900, São Paulo, SP, Brazil
| | - Hermi Felinto de Brito
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil
| | - Magnus Gidlund
- Department of Immunology, Institute of Biomedical Sciences-IV, University of São Paulo (USP), Zip Code 05508-000, São Paulo, SP, Brazil
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3
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Liu S, Guo N, Wu X, Zhang N, Li Y, Wang G. Tunable photoluminescence of CdTe QDs through the modification of polyoxometalates. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1966454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shixian Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Ningning Guo
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Xia Wu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Niuniu Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Yunping Li
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Guan Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
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4
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Liu L, Pan K, Xu K, Peng X, Zhang JZ. Synthesis and Optical Properties of Mn 2+-Doped Amino Lead Halide Molecular Clusters Assisted by Chloride Ion. J Phys Chem Lett 2021; 12:7497-7503. [PMID: 34342458 DOI: 10.1021/acs.jpclett.1c02243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Mn2+-doped amino lead halide molecular clusters (MCs) are synthesized using amine (e.g., n-octylamine, or butylamine) as passivating ligand and MnX2 (X = Cl or Br) as the Mn2+ doping source at room temperature. Their optical properties are investigated with UV-visible absorption, photoluminescence (PL), and PL excitation spectroscopy. The Mn2+ precursor plays a vital role in the synthesis of Mn2+-doped MCs. MnCl2 seems to facilitate the incorporation of Mn. The MnCl2 doping causes electronic absorption blue shift and leads to a spin-forbidden 4T1 → 6A1 Mn d-electron emission. With the help of time-resolved PL, Fourier transform infrared, and electron paramagnetic resonance results, a model is proposed to explain the formation mechanism. We suggest that Mn2+ doping replaces Pb2+ is assisted by Cl- ions that replace Br- ions. This study demonstrates the possibility of doping MCs and has important implications in gaining new fundamental insight into the growth mechanisms of perovskite nanostructures.
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Affiliation(s)
- Li Liu
- Research Institute of Agricultural Quality Standards and Testing Technology, Hubei Academy of Agricultural Science, Wuhan 430064, PR China
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Keliang Pan
- Hubei Institute of Geosciences, Wuhan 430034, PR China
| | - Ke Xu
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Xitian Peng
- Research Institute of Agricultural Quality Standards and Testing Technology, Hubei Academy of Agricultural Science, Wuhan 430064, PR China
| | - Jin Z Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
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Chen Z, Zhou B, Yuan J, Tang N, Lian L, Qin L, Zhu L, Zhang J, Chen R, Zang J. Cu 2+-Doped CsPbI 3 Nanocrystals with Enhanced Stability for Light-Emitting Diodes. J Phys Chem Lett 2021; 12:3038-3045. [PMID: 33735572 DOI: 10.1021/acs.jpclett.1c00515] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Black phase CsPbI3 perovskites have emerged as one of the most promising materials for use in optoelectronic devices due to their remarkable properties. However, black phase CsPbI3 usually possesses poor stability and involves a phase change process, resulting in an undesired orthorhombic (δ) yellow phase. Here, the enhanced stability of CsPbI3 nanocrystals is achieved by incorporating the Cu2+ ion into the CsPbI3 lattice under mild conditions. In particular, the Cu2+-doped CsPbI3 film can maintain red luminescence for 35 days in air while the undoped ones transformed into the nonluminescent yellow phase in several days. Furthermore, first-principles calculations verified that the enhanced stability is ascribed to the increased formation energy due to the successful doping of Cu2+ in CsPbI3. Benefiting from such an effective doping strategy, the as-prepared Cu2+-doped CsPbI3 as an emitting layer shows much better performance compared with that of the undoped counterpart. The turn-on voltage of the Cu2+-doped quantum-dot light-emitting diode (QLED) (1.6 V) is significantly reduced compared with that of the pristine QLED (3.8 V). In addition, the luminance of the Cu2+-doped QLED can reach 1270 cd/m2, which is more than twice that of the pristine CsPbI3 QLED (542 cd/m2). The device performance is believed to be further improved by optimizing the purification process and device structure, shedding light on future applications.
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Affiliation(s)
- Zhuo Chen
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Binze Zhou
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Junhui Yuan
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ni Tang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Linyuan Lian
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Le Qin
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Linhao Zhu
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jianbing Zhang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Rong Chen
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Jianfeng Zang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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Toufanian R, Chern M, Kong VH, Dennis AM. Engineering Brightness Matched Indium Phosphide Quantum Dots. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:1964-1975. [PMID: 34219920 PMCID: PMC8243842 DOI: 10.1021/acs.chemmater.0c03181] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The size-dependent optoelectronic properties of semiconductor nanocrystals quantum dots (QDs) are hugely beneficial for color tunability but induce an inherent relative PL brightness mismatch in QDs emitting different colors, as larger emitters absorb more incident photons than smaller particles. Here, we examine the effect of core composition, shell composition, and shell thickness on optical properties including high energy absorption, quantum yield (QY), and the relative brightness of InP/ZnS and InP/ZnSe core/shell and InP/ZnSe/ZnS core/shell/shell QDs at different excitation wavelengths. Our analysis reveals that the presence of an intermediate ZnSe shell changes the wavelength of enhanced absorption onset and leads to highly excitation wavelength dependent QYs. Switching from commercial CdSe/ZnS to InP/ZnS reduces the brightness-mismatch between green and red emitters from 33- to 5-fold. Incorporating a 4-monolayer thick optically absorbing ZnSe shell into the QD heterostructure and heating the QDs in a solution of zinc oleate and trioctylphosphine produces InP/ZnSe/ZnS QDs that are ~10-fold brighter than their InP/ZnS counterparts. In contrast to CdSe/CdS/ZnS core/shell/shell QDs, which only photoluminesce at red wavelengths with thicker CdS shells due to their Quasi-Type II bandstructure, Type I InP/ZnSe/ZnS QDs are uniquely suited to creating a rainbow of visible-emitting, brightness matched emitters. By tailoring the thickness of the intermediate ZnSe shell, heavy metal-free, brightness-matched green and red emitters are produced. This study highlights the ability to overcome the inherent brightness mismatch seen in QDs through concerted materials design of heterostructured core/shell InP-based QDs.
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Affiliation(s)
- Reyhaneh Toufanian
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Margaret Chern
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Victoria H Kong
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Allison M Dennis
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
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7
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Sier D, Cousland GP, Trevorah RM, Ekanayake RSK, Tran CQ, Hester JR, Chantler CT. High accuracy determination of photoelectric cross sections, X-ray absorption fine structure and nanostructure analysis of zinc selenide using the X-ray extended range technique. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:1262-1277. [PMID: 32876602 DOI: 10.1107/s1600577520010097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Measurements of mass attenuation coefficients and X-ray absorption fine structure (XAFS) of zinc selenide (ZnSe) are reported to accuracies typically better than 0.13%. The high accuracy of the results presented here is due to our successful implementation of the X-ray extended range technique, a relatively new methodology, which can be set up on most synchrotron X-ray beamlines. 561 attenuation coefficients were recorded in the energy range 6.8-15 keV with measurements concentrated at the zinc and selenium pre-edge, near-edge and fine-structure absorption edge regions. This accuracy yielded detailed nanostructural analysis of room-temperature ZnSe with full uncertainty propagation. Bond lengths, accurate to 0.003 Å to 0.009 Å, or 0.1% to 0.3%, are plausible and physical. Small variation from a crystalline structure suggests local dynamic motion beyond that of a standard crystal lattice, noting that XAFS is sensitive to dynamic correlated motion. The results obtained in this work are the most accurate to date with comparisons with theoretically determined values of the attenuation showing discrepancies from literature theory of up to 4%, motivating further investigation into the origin of such discrepancies.
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Affiliation(s)
- Daniel Sier
- School of Physics, University of Melbourne, Australia
| | | | | | | | | | - James R Hester
- Australian Nuclear Science and Technology Organisation, Menai, Australia
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Park S, Son C, Kang S, Baek S, Kim Y, Kwon OP, Park J, Kim SW. Development of highly efficient blue-emitting ZnSexTe1-x/ZnSe/ZnS quantum dots and their electroluminescence application. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Yang L, Zhou Z, Song J, Chen X. Anisotropic nanomaterials for shape-dependent physicochemical and biomedical applications. Chem Soc Rev 2019; 48:5140-5176. [PMID: 31464313 PMCID: PMC6768714 DOI: 10.1039/c9cs00011a] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review contributes towards a systematic understanding of the mechanism of shape-dependent effects on nanoparticles (NPs) for elaborating and predicting their properties and applications based on the past two decades of research. Recently, the significance of shape-dependent physical chemistry and biomedicine has drawn ever increasing attention. While there has been a great deal of effort to utilize NPs with different morphologies in these fields, so far research studies are largely localized in particular materials, synthetic methods, or biomedical applications, and have ignored the interactional and interdependent relationships of these areas. This review is a comprehensive description of the NP shapes from theory, synthesis, property to application. We figure out the roles that shape plays in the properties of different kinds of nanomaterials together with physicochemical and biomedical applications. Through systematic elaboration of these shape-dependent impacts, better utilization of nanomaterials with diverse morphologies would be realized and definite strategies would be expected for breakthroughs in these fields. In addition, we have proposed some critical challenges and open problems that need to be addressed in nanotechnology.
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Affiliation(s)
- Lijiao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China. and Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Zijian Zhou
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Jibin Song
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China.
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA.
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10
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Huang L, Li Z, Zhang C, Kong L, Wang B, Huang S, Sharma V, Ma H, Yuan Q, Liu Y, Shen G, Wu K, Li L. Sacrificial oxidation of a self-metal source for the rapid growth of metal oxides on quantum dots towards improving photostability. Chem Sci 2019; 10:6683-6688. [PMID: 31367322 PMCID: PMC6625490 DOI: 10.1039/c9sc01233h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/28/2019] [Indexed: 11/21/2022] Open
Abstract
Growth of metal oxide layers on quantum dots (QDs) has been regarded as a good way to improve the photostability of QDs. However, direct growth of metal oxides on individual QD remains a great challenge. Here we report a novel approach to rapidly anchor metal oxides on QD surfaces through a sacrificial oxidation of a self-metal source strategy. As typical core/shell QDs, CdSe/CdS or aluminum doped CdSe/CdS (CdSe/CdS:Al) QDs were chosen and treated with peroxide (benzoyl peroxide). Self-metal sources (cadmium or/and aluminum) can be easily sacrificially oxidized, leading to the quick growth of cadmium oxide (CdO) or aluminum/cadmium hybrid oxides (Al2O3/CdO) on the surface of individual QD for improved photostability. Compared with CdO, Al2O3 possesses excellent barrier properties against moisture and oxygen. Therefore, CdSe/CdS QDs with the protection of an Al2O3/CdO hybrid layer show much superior photostability. Under strong illumination with blue light, the QDs coated with the Al2O3/CdO hybrid layer retained 100% of the original photoluminescence intensity after 70 h, while that of the untreated CdSe/CdS:Al, the treated CdSe/CdS and the CdSe/CdS QDs dropped to 65%, 45%, and 5%, respectively. Furthermore, we demonstrate that this method can be extended to other metal-doped QD systems, even including some inactive metals difficult to be oxidized spontaneously in an ambient atmosphere, which provides a new way to stabilize QDs for diverse optoelectronic applications.
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Affiliation(s)
- Lu Huang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
- School of Agriculture and Biology , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Zhichun Li
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Congyang Zhang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Long Kong
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Bo Wang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Shouqiang Huang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Vaishali Sharma
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
| | - Houyu Ma
- School of Materials Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Qingchen Yuan
- School of Materials Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Yue Liu
- School of Materials Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Guoqing Shen
- School of Agriculture and Biology , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Kaifeng Wu
- Dalian Institute of Chemical Physics , Chinese Academy of Sciences , 457 Zhongshan Road , Dalian 116021 , China
| | - Liang Li
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China .
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11
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Lim M, Lee W, Bang G, Lee WJ, Park Y, Kwon Y, Jung Y, Kim S, Bang J. Synthesis of far-red- and near-infrared-emitting Cu-doped InP/ZnS (core/shell) quantum dots with controlled doping steps and their surface functionalization for bioconjugation. NANOSCALE 2019; 11:10463-10471. [PMID: 31112192 DOI: 10.1039/c9nr02192b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In this study, we designed and synthesized far-red- and near-infrared-emitting Cu-doped InP-based quantum dots (QDs), and we also demonstrated their highly specific and sensitive biological imaging ability. Cu-doped InP/ZnS (core/shell) QDs were prepared using the hot colloidal synthesis method in the organic phase. The ZnS shell passivates the surface and improves the photoluminescence (PL) intensity. However, the InP : Cu/ZnS (core : dopants/shell) QDs, which were obtained after the Cu dopant was incorporated into bare InP QDs, followed by ZnS shell coating, had relatively low PL intensities (maximum PL quantum yield (QY) was only ∼16%) presumably due to the formation of defect sites in the InP-core QDs caused by dopant migration from the InP core to the ZnS shell. We prepared high-quality InP/ZnS : Cu/ZnS (core/shell : dopant/outer-shell) QDs, where thin ZnS shell layers were grown on bare InP QDs prior to Cu ion doping to prevent dopant migration and obtained PL QYs as high as 40%. The native hydrophobic ligands of the as-synthesized Cu-doped QDs were replaced with hydrophilic ligands including dihydrolipoic acid and a zwitterionic ligand, which rendered the QDs water-soluble. These QDs exhibited remarkable colloidal stabilities over a wide pH range, with hydrodynamic diameters less than 10 nm. Modified QD surfaces can also be used in conjugation with other functional moieties to apply highly specific and sensitive imaging probes with very low background levels. As a proof-of-concept study, we successfully demonstrated the selective imaging of streptavidin beads with biotin-conjugated QDs. These decorated Cu-doped InP/ZnS (core/shell) QDs are promising biological-probe candidates for imaging and assaying with reduced concerns regarding toxicity.
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Affiliation(s)
- Mihye Lim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Namgu, Pohang 37673, Republic of Korea.
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12
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Ning J, Liu J, Levi-Kalisman Y, Frenkel AI, Banin U. Controlling Anisotropic Growth of Colloidal ZnSe Nanostructures. J Am Chem Soc 2018; 140:14627-14637. [DOI: 10.1021/jacs.8b05941] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jiajia Ning
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Jing Liu
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Physics, Manhattan College, Riverdale, New York 10471, United States
| | - Yael Levi-Kalisman
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Uri Banin
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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13
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Hybrid graphene/cadmium-free ZnSe/ZnS quantum dots phototransistors for UV detection. Sci Rep 2018; 8:5107. [PMID: 29572513 PMCID: PMC5865151 DOI: 10.1038/s41598-018-23507-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/06/2018] [Indexed: 11/19/2022] Open
Abstract
Graphene-based optoelectronic devices have attracted much attention due to their broadband photon responsivity and fast response time. However, the performance of such graphene-based photodetectors is greatly limited by weak light absorption and low responsivity induced by the gapless nature of graphene. Here, we achieved a high responsivity above 103 AW−1 for Ultraviolet (UV) light in a hybrid structure based phototransistor, which consists of CVD-grown monolayer graphene and ZnSe/ZnS core/shell quantum dots. The photodetectors exhibit a selective photo responsivity for the UV light with the wavelength of 405 nm, confirming the main light absorption from QDs. The photo-generated charges have been found to transfer from QDs to graphene channel, leading to a gate-tunable photo responsivity with the maximum value obtained at VG about 15V. A recirculate 100 times behavior with a good stability of 21 days is demonstrated for our devices and another flexible graphene/QDs based photoconductors have been found to be functional after 1000 bending cycles. Such UV photodetectors based on graphene decorated with cadmium-free ZnSe/ZnS quantum dots offer a new way to build environmental friendly optoelectronics.
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14
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Wei Z, Lu Y, Zhao J, Zhao S, Wang R, Fu N, Li X, Guan L, Teng F. Synthesis and Luminescent Modulation of ZnS Crystallite by a Hydrothermal Method. ACS OMEGA 2018; 3:137-143. [PMID: 31457882 PMCID: PMC6641465 DOI: 10.1021/acsomega.7b01574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 11/24/2017] [Indexed: 06/10/2023]
Abstract
Pure and Eu3+-doped zinc sulfide (ZnS) crystallites were synthesized through a hydrothermal method using water and ethanol (W/E) as the solvent. The powder samples have been characterized systematically using a number of characterization techniques such as X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, photoluminescence spectroscopy, and UV-vis absorption spectroscopy. The band gap of ZnS and ZnS/xEu3+ was calculated according to absorption spectroscopy, and an obvious red shift with the increasing molar fraction of Eu3+-doped ions was found. The luminescent mechanism of ZnS was explored by measuring the emission spectra of ZnS with different ratios of Zn and S. The emission spectra of ZnS/xEu3+ included the characteristic emission peak of ZnS and Eu3+ ions. The CIE chromaticity coordinates of the ZnS/xEu3+ sample varied with the molar fraction of Eu3+ ions. The emission intensity and morphology changed with the ratio of W/E in the process of hydrothermal reaction. The results indicate that the luminescence of the ZnS crystallite can be modulated by doping a certain amount of Eu3+ ions, changing the ratio of Zn and S, or adding moderate ethanol as the reaction medium.
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Affiliation(s)
- Zhiren Wei
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Yue Lu
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Jing Zhao
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Shuya Zhao
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Ruiqi Wang
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Nian Fu
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Xu Li
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Li Guan
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
| | - Feng Teng
- Hebei
Key Laboratory of Photo-Electricity Information and Materials, College
of Physics Science and Technology, Hebei
University, Baoding 071002, PR China
- Key
Laboratory of Luminescence and Optical Information, Ministry of Education,
School of Science, Beijing Jiao Tong University, Beijing 100044, China
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15
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Hughes KE, Hartstein KH, Gamelin DR. Photodoping and Transient Spectroscopies of Copper-Doped CdSe/CdS Nanocrystals. ACS NANO 2018; 12:718-728. [PMID: 29286633 DOI: 10.1021/acsnano.7b07879] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Colloidal Cu+-doped CdSe/CdS core/shell semiconductor nanocrystals (NCs) are investigated in their as-prepared and degenerately n-doped forms using time-resolved photoluminescence and transient-absorption spectroscopies. Photoluminescence from Cu+:CdSe/CdS NCs is dominated by recombination of delocalized conduction-band (CB) electrons with copper-localized holes. In addition to prominent bleaching of the first excitonic absorption feature, transient-absorption measurements show bleaching of the sub-bandgap copper-to-CB charge-transfer (MLCBCT) absorption band and also reveal a photoinduced midgap valence-band (VB)-to-copper charge-transfer (LVBMCT) absorption band that extends into the near-infrared, as predicted by recent computations. The photoluminescence of these NCs is substantially diminished upon introduction of excess CB electrons via photodoping. Time-resolved photoluminescence measurements reveal that the MLCBCT excited state is still formed upon photoexcitation of the n-doped Cu+:CdSe/CdS NCs, but its luminescence is quenched by a fast (picosecond) three-carrier trap-assisted Auger recombination process involving two CB electrons and one copper-bound hole.
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Affiliation(s)
- Kira E Hughes
- Department of Chemistry, University of Washington , Seattle, Washington 98195-1700, United States
| | - Kimberly H Hartstein
- Department of Chemistry, University of Washington , Seattle, Washington 98195-1700, United States
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington , Seattle, Washington 98195-1700, United States
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16
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Bhagavathula SDI, Kokkarachedu V, Acuna DQ, Koduri R, Veluri S, Reddy V. Insight of electrical behavior in ferroelectric-semiconductor polymer nanocomposite films of PVDF/ZnSe and PVDF/Cu:ZnSe. J Appl Polym Sci 2017. [DOI: 10.1002/app.44983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S. DIwakar Bhagavathula
- Departamento de Ingeniería de Materiales-DIMAT, Facultad de ingeniería; Universidad de Concepción; Concepción 4070409 Chile
- Department of Engineering Chemistry, SRKR Engineering College; Bhimavaram Andhra Pradesh 534204 India
| | - Varaprasad Kokkarachedu
- Departamento de Polimeros; Centro de Investigación de Polímeros Avanzados, CIPA, CONICYT Regional, GORE BIO-BIO PRFC0002, Avenida Collao 1202, Edificio de Laboratorios; Concepción Chile
| | - David Quezada Acuna
- Departamento de Ingeniería de Materiales-DIMAT, Facultad de ingeniería; Universidad de Concepción; Concepción 4070409 Chile
| | - Ramam Koduri
- Departamento de Ingeniería de Materiales-DIMAT, Facultad de ingeniería; Universidad de Concepción; Concepción 4070409 Chile
| | - Swaminadham Veluri
- Department of Physics; Swarnandhra College of Engineering and Technology; Narsapur Andhra Pradesh 534 280 India
| | - Venu Reddy
- School of Engineering Science and Technology; University of Hyderabad; Telangana 500046 India
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17
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Gawai UP, Deshpande UP, Dole BN. A study on the synthesis, longitudinal optical phonon–plasmon coupling and electronic structure of Al doped ZnS nanorods. RSC Adv 2017. [DOI: 10.1039/c6ra28180j] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
First principles density functional theory (DFT) calculations were employed to study the structural and electronic properties of pure and Al doped ZnS nanorods.
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Affiliation(s)
- U. P. Gawai
- Advanced Materials Research Laboratory
- Department of Physics
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad – 431 004
- India
| | - U. P. Deshpande
- UGC-DAE Consortium for Scientific Research
- University Campus
- Indore – 425 017
- India
| | - B. N. Dole
- Advanced Materials Research Laboratory
- Department of Physics
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad – 431 004
- India
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18
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Xu G, Zeng S, Zhang B, Swihart MT, Yong KT, Prasad PN. New Generation Cadmium-Free Quantum Dots for Biophotonics and Nanomedicine. Chem Rev 2016; 116:12234-12327. [DOI: 10.1021/acs.chemrev.6b00290] [Citation(s) in RCA: 395] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Gaixia Xu
- Key
Laboratory of Optoelectronics Devices and Systems of Ministry of Education/Guangdong
Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
- CINTRA
CNRS/NTU/THALES,
UMI 3288, Research Techno Plaza, 50
Nanyang Drive, Border X Block, Singapore 637553, Singapore
| | - Shuwen Zeng
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
- CINTRA
CNRS/NTU/THALES,
UMI 3288, Research Techno Plaza, 50
Nanyang Drive, Border X Block, Singapore 637553, Singapore
| | - Butian Zhang
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | | | - Ken-Tye Yong
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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19
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Chen H, Jiang G, Yu W, Liu D, Liu Y, Li L, Huang Q, Tong Z, Chen W. Preparation of electrospun ZnS-loaded hybrid carbon nanofiberic membranes for photocatalytic applications. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.05.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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General low-temperature reaction pathway from precursors to monomers before nucleation of compound semiconductor nanocrystals. Nat Commun 2016; 7:12223. [PMID: 27531507 PMCID: PMC4992053 DOI: 10.1038/ncomms12223] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/14/2016] [Indexed: 11/09/2022] Open
Abstract
Little is known about the molecular pathway to monomers of semiconductor nanocrystals. Here we report a general reaction pathway, which is based on hydrogen-mediated ligand loss for the precursor conversion to 'monomers' at low temperature before nucleation. We apply (31)P nuclear magnetic resonance spectroscopy to monitor the key phosphorous-containing products that evolve from MXn+E=PPh2H+HY mixtures, where MXn, E=PPh2H, and HY are metal precursors, chalcogenide precursors, and additives, respectively. Surprisingly, the phosphorous-containing products detected can be categorized into two groups, Ph2P-Y and Ph2P(E)-Y. On the basis of our experimental and theoretical results, we propose two competing pathways to the formation of M2En monomers, each of which is accompanied by one of the two products. Our study unravels the pathway of precursor evolution into M2En monomers, the stoichiometry of which directly correlates with the atomic composition of the final compound nanocrystals.
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21
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Knowles KE, Hartstein KH, Kilburn TB, Marchioro A, Nelson HD, Whitham PJ, Gamelin DR. Luminescent Colloidal Semiconductor Nanocrystals Containing Copper: Synthesis, Photophysics, and Applications. Chem Rev 2016; 116:10820-51. [DOI: 10.1021/acs.chemrev.6b00048] [Citation(s) in RCA: 233] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kathryn E. Knowles
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Kimberly H. Hartstein
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Troy B. Kilburn
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Arianna Marchioro
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Heidi D. Nelson
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Patrick J. Whitham
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Daniel R. Gamelin
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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22
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Zhou S, Weng Y, Wu Z, Wang J, Wu L, Ni Z, Xu Q, Dong S. Strong room-temperature blue-violet photoluminescence of multiferroic BaMnF4. Phys Chem Chem Phys 2016; 18:2054-8. [PMID: 26687543 DOI: 10.1039/c5cp05864c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BaMnF4 microsheets have been prepared using a hydrothermal method. Strong room-temperature blue-violet photoluminescence has been observed (an absolute luminescence quantum yield of 67%) with two peaks located at 385 nm and 410 nm. More interestingly, photon self-absorption phenomenon has been observed, leading to an unusual abrupt decrease in the luminescence intensity at a wavelength of 400 nm. To understand the underlying mechanism of such emission, the electronic structure of BaMnF4 has been studied using first principles calculations. The observed two peaks are attributed to electron transitions between the upper-Hubbard bands of the Mn's t2g orbitals and the lower-Hubbard bands of the Mn's eg orbitals. The Mott gap mediated d-d orbital transitions may provide additional degrees of freedom to tune the photon generation and absorption in ferroelectrics.
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Affiliation(s)
- Shuang Zhou
- Department of Physics, Southeast University, Nanjing 211189, China.
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23
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Mikulski J, Sikora B, Fronc K, Aleshkevych P, Kret S, Suffczyński J, Papierska J, Kłopotowski Ł, Kossut J. Synthesis and magnetooptic characterization of Cu-doped ZnO/MgO and ZnO/oleic acid core/shell nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra01453d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of Cu ion doping on the photoluminescence (PL) and magnetic behavior of ZnO/MgO and ZnO/oleic acid core/shell nanoparticles is investigated.
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Affiliation(s)
- J. Mikulski
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - B. Sikora
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - K. Fronc
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - P. Aleshkevych
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - S. Kret
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - J. Suffczyński
- Institute of Experimental Physics
- Faculty of Physics
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - J. Papierska
- Institute of Experimental Physics
- Faculty of Physics
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Ł. Kłopotowski
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
| | - J. Kossut
- Institute of Physics Polish Academy of Science
- 02-668 Warsaw
- Poland
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24
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Pham HH, Barkema GT, Wang LW. DFT+U studies of Cu doping and p-type compensation in crystalline and amorphous ZnS. Phys Chem Chem Phys 2015; 17:26270-6. [DOI: 10.1039/c5cp04623h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc sulfide is an excellent candidate for the development of a p-type transparent conducting material that has great demands in solar energy and optoelectronic applications.
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Affiliation(s)
- Hieu H. Pham
- Joint Center for Artificial Photosynthesis and Materials Sciences Division Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | | | - Lin-Wang Wang
- Joint Center for Artificial Photosynthesis and Materials Sciences Division Lawrence Berkeley National Laboratory
- Berkeley
- USA
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