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Zhang M, Han X, Yang C, Zhang G, Guo W, Li J, Chen Z, Li B, Chen R, Qin C, Hu J, Yang Z, Zeng G, Xiao L, Jia S. Size Uniformity of CsPbBr 3 Perovskite Quantum Dots via Manganese-Doping. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1284. [PMID: 39120388 PMCID: PMC11313879 DOI: 10.3390/nano14151284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
The achievement of size uniformity and monodispersity in perovskite quantum dots (QDs) requires the implementation of precise temperature control and the establishment of optimal reaction conditions. Nevertheless, the accurate control of a range of reaction variables represents a considerable challenge. This study addresses the aforementioned challenge by employing manganese (Mn) doping to achieve size uniformity in CsPbBr3 perovskite QDs without the necessity for the precise control of the reaction conditions. By optimizing the Mn:Pb ratio, it is possible to successfully dope CsPbBr3 QDs with the appropriate concentrations of Mn²⁺ and achieve a uniform size distribution. The spectroscopic measurements on single QDs indicate that the appropriate Mn²⁺ concentrations can result in a narrower spectral linewidth, a longer photoluminescence (PL) lifetime, and a reduced biexciton Auger recombination rate, thus positively affecting the PL properties. This study not only simplifies the size control of perovskite QDs but also demonstrates the potential of Mn-doped CsPbBr3 QDs for narrow-linewidth light-emitting diode applications.
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Grants
- No. 2022YFA1404201 the National Key Research and Development Program of China
- Nos. 62127817, U22A2091, U23A20380, 62075120, 62222509, 62075122, 62205187, 62105193, 62305201 and 62305200 the Natural Science Foundation of China
- No. 62011530133 NSFC-STINT
- No. IRT_17R70 Program for Changjiang Scholars and Innovative Research Team
- No. 2022M722006 China Postdoctoral Science Foundation
- No. 202303021222031, 202103021223032, 202103021223254 Fundamental Research Program of Shanxi Province
- No. 202204051001014 Shanxi Province Science and Technology Innovation Talent Team
- No. 202201010101005 Shanxi Province Science and Technology Major Special Project
- 202104041101021 Science and Technology Cooperation Project of Shanxi Province
- No. D18001 Shanxi "1331 Project", and 111 project
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Affiliation(s)
- Mi Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Xue Han
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Jialu Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Zhihao Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Zhichun Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Ganying Zeng
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
- College of Physics, Taiyuan University of Technology, Taiyuan 030006, China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; (M.Z.); (X.H.); (C.Y.); (W.G.); (J.L.); (Z.C.); (B.L.); (R.C.); (C.Q.); (J.H.); (Z.Y.); (G.Z.); (S.J.)
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Li B, Gao Y, Wu R, Miao X, Zhang G. Charge and energy transfer dynamics in single colloidal quantum dots/monolayer MoS 2 heterostructures. Phys Chem Chem Phys 2023; 25:8161-8167. [PMID: 36880256 DOI: 10.1039/d2cp05771a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The charge and energy transfer dynamics in colloidal CdSeTe/ZnS quantum dots (QDs)/monolayer molybdenum disulfide (MoS2) heterostructures have been investigated by time-resolved single-dot photoluminescence (PL) spectroscopy. A time-gated method is used to separate the PL photons of single QDs from the PL photons of monolayer MoS2, which are impossible to be separated by the spectral filter due to their spectral overlap. It is found that the energy transfer from MoS2 to single QDs increases the exciton generation of the QDs by 37.5% and the energy transfer from single QDs to MoS2 decreases the PL quantum yield of the QDs by 66.9%. In addition, it is found that MoS2 increases the discharging rate of single QDs by 59%, while the charging rate remains unchanged. This investigation not only provides valuable insight into the exciton generation and recombination at the single-dot level across such hybrid 0D-2D interfaces but also promotes the application of the hybrid system in various optoelectronic devices.
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Affiliation(s)
- Bin Li
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Taiyuan, 030031, China. .,State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
| | - Yuke Gao
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Taiyuan, 030031, China.
| | - Ruixiang Wu
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Taiyuan, 030031, China.
| | - Xiangyang Miao
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Taiyuan, 030031, China.
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
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Guo W, Tang J, Zhang G, Li B, Yang C, Chen R, Qin C, Hu J, Zhong H, Xiao L, Jia S. Photoluminescence Blinking and Biexciton Auger Recombination in Single Colloidal Quantum Dots with Sharp and Smooth Core/Shell Interfaces. J Phys Chem Lett 2021; 12:405-412. [PMID: 33356280 DOI: 10.1021/acs.jpclett.0c03065] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There is an inconsistence on whether a smooth core/shell interface can reduce Auger recombination and suppress photoluminescence (PL) blinking in single colloidal quantum dots (QDs). Here, we investigate the influence of a core/shell interface on PL blinking and biexciton Auger recombination by comparing the single-dot PL spectra of CdxZn1-xSeyS1-y/ZnS core/shell QDs with sharp and smooth interfaces. The inconsistence can be clarified when considering different PL blinking mechanisms. For the single QDs showing Auger blinking, a smooth core/shell interface potential can suppress PL blinking through reducing the Auger recombination. In contrast, we find slightly reduced biexciton Auger recombination rates but increased PL blinking activities in the band-edge carrier (BC)-blinking QDs with the smooth core/shell interface. This is because the smooth interface potential cannot reduce the PL blinking caused by the transfer of electrons to the surface states; however, there is potential to increase electron wave function delocalization for reducing the biexciton Auger recombination rate.
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Affiliation(s)
- Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Jialun Tang
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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Li B, Zhang G, Zhang Y, Yang C, Guo W, Peng Y, Chen R, Qin C, Gao Y, Hu J, Wu R, Ma J, Zhong H, Zheng Y, Xiao L, Jia S. Biexciton Dynamics in Single Colloidal CdSe Quantum Dots. J Phys Chem Lett 2020; 11:10425-10432. [PMID: 33269933 DOI: 10.1021/acs.jpclett.0c02832] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The investigation of biexciton dynamics in single colloidal quantum dots (QDs) is critical to biexciton-based applications. Generally, a biexciton exhibits an extremely low photoluminescence (PL) quantum yield as well as very fast PL decay due to strong nonradiative Auger recombination, making it difficult to investigate the biexciton dynamics. Here, we develop a quantitative method based on intensity- and time-resolved photon statistics to investigate the biexciton dynamics in single colloidal QDs. This robust method can be used under high-excitation conditions to determine the absolute radiative and Auger recombination rates of both neutral and charged biexciton states in a single QD level, and the corresponding ratios between the two states agree with the theoretical predictions of the asymmetric band structures of CdSe-based QDs. Furthermore, the surface traps are found to provide additional nonradiative recombination pathways for the biexcitons, and their contributions are quantified by the method.
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Affiliation(s)
- Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Yong Zhang
- Department of Electrical and Computer Engineering, University of North Carolina at Charlotte, Charlotte, North Carolina 28223, United States
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Yonggang Peng
- School of Physics, Shandong University, Jinan 250100, China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Yan Gao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Ruixiang Wu
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China
| | - Jie Ma
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yujun Zheng
- School of Physics, Shandong University, Jinan 250100, China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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Han X, Zhang G, Li B, Yang C, Guo W, Bai X, Huang P, Chen R, Qin C, Hu J, Ma Y, Zhong H, Xiao L, Jia S. Blinking Mechanisms and Intrinsic Quantum-Confined Stark Effect in Single Methylammonium Lead Bromide Perovskite Quantum Dots. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2005435. [PMID: 33236844 DOI: 10.1002/smll.202005435] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Lead halide perovskite quantum dots (QDs) are promising materials for next-generation photoelectric devices because of their low preparation costs and excellent optoelectronic properties. In this study, the blinking mechanisms and the intrinsic quantum-confined Stark effect (IQCSE) in single organic-inorganic hybrid CH3 NH3 PbBr3 perovskite QDs using single-dot photoluminescence (PL) spectroscopy is investigated. The PL quantum yield-recombination rates distribution map allows the identification of different PL blinking mechanisms and their respective contributions to the PL emission behavior. A strong correlation between the excitation power and the blinking mechanisms is reported. Most single QDs exhibit band-edge carrier blinking under a low excitation photon fluence. While under a high excitation photon fluence, different proportions of Auger-blinking emerge in their PL intensity trajectories. In particular, significant IQCSEs in the QDs that exhibit more pronounced Auger-blinking are observed. Based on these findings, an Auger-induced IQCSE model to explain the observed IQCSE phenomena is observed.
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Affiliation(s)
- Xue Han
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, Linfen, 041004, China
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Xiuqing Bai
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Peng Huang
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Yifei Ma
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
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Liu L, Deng L, Huang S, Zhang P, Linnros J, Zhong H, Sychugov I. Photodegradation of Organometal Hybrid Perovskite Nanocrystals: Clarifying the Role of Oxygen by Single-Dot Photoluminescence. J Phys Chem Lett 2019; 10:864-869. [PMID: 30730749 DOI: 10.1021/acs.jpclett.9b00143] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photostability has been a major issue for perovskite materials. Understanding the photodegradation mechanism and suppressing it are of central importance for applications. By investigating single-dot photoluminescence spectra and the lifetime of MAPbX3 (MA = CH3NH3+, X = Br, I) nanocrystals with quantum confinement under different conditions, we identified two separate pathways in the photodegradation process. The first is the oxygen-assisted light-induced etching process (photochemistry). The second is the light-driven slow charge-trapping process (photophysics), taking place even in oxygen-free environment. We clarified the role of oxygen in the photodegradation process and show how the photoinduced etching can be successfully suppressed by OSTE polymer, preventing an oxygen-assisted reaction.
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Affiliation(s)
- Lige Liu
- Nanophotonics and Ultrafine Optoelectronic System, Beijing Key Laboratory, School of Physics , Beijing Institute of Technology , 5 South Street of Zhongguancun , 100081 Beijing , China
- Department of Applied Physics , KTH-Royal Institute of Technology , Electrum 229 , 16440 Kista , Sweden
| | - Luogen Deng
- Nanophotonics and Ultrafine Optoelectronic System, Beijing Key Laboratory, School of Physics , Beijing Institute of Technology , 5 South Street of Zhongguancun , 100081 Beijing , China
| | - Sheng Huang
- School of Materials Science & Engineering , Beijing Institute of Technology , 5 South Street of Zhongguancun , 100081 Beijing , China
| | - Pei Zhang
- Department of Applied Physics , KTH-Royal Institute of Technology , Electrum 229 , 16440 Kista , Sweden
- Henan Key Lab of Information-based Electrical Appliances, School of Electrical and Information Engineering , Zhengzhou University of Light Industry , 450002 Zhengzhou , China
| | - Jan Linnros
- Department of Applied Physics , KTH-Royal Institute of Technology , Electrum 229 , 16440 Kista , Sweden
| | - Haizheng Zhong
- School of Materials Science & Engineering , Beijing Institute of Technology , 5 South Street of Zhongguancun , 100081 Beijing , China
| | - Ilya Sychugov
- Department of Applied Physics , KTH-Royal Institute of Technology , Electrum 229 , 16440 Kista , Sweden
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Li B, Huang H, Zhang G, Yang C, Guo W, Chen R, Qin C, Gao Y, Biju VP, Rogach AL, Xiao L, Jia S. Excitons and Biexciton Dynamics in Single CsPbBr 3 Perovskite Quantum Dots. J Phys Chem Lett 2018; 9:6934-6940. [PMID: 30484306 DOI: 10.1021/acs.jpclett.8b03098] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Colloidal lead halide perovskite quantum dots, due to their optical versatility and facile solution processability, have been recently recognized as components of various optoelectronic devices. Detailed understanding of their exciton recombination dynamics at the single-particle level is necessary for utilizing their full potential. We conducted spectroscopic studies of the excitons and biexciton dynamics in single CsPbBr3 perovskite quantum dots. It was found that while the rates of radiative recombination remain essentially constant, the overall relaxation process is dominated by nonradiative recombination of single excitons and biexcitons. The radiative lifetime scaling is determined to be ∼1.0 for single exciton and ∼4.4 for biexcitons. A linear dependence of fluorescence lifetime vs intensity distribution agrees well with the prediction of the model of multiple recombination centers. The blinking mechanism of CsPbBr3 quantum dots is addressed by considering the trion states under higher excitation powers.
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Affiliation(s)
- Bin Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - He Huang
- Department of Materials Science and Engineering, Centre for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Changgang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Wenli Guo
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Yan Gao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Vasudevan P Biju
- Research Institute for Electronic Science , Hokkaido University , 001-0020 Sapporo , Japan
| | - Andrey L Rogach
- Department of Materials Science and Engineering, Centre for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , People's Republic of China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 , People's Republic of China
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Yang C, Zhang G, Feng L, Li B, Li Z, Chen R, Qin C, Gao Y, Xiao L, Jia S. Suppressing the photobleaching and photoluminescence intermittency of single near-infrared CdSeTe/ZnS quantum dots with p-phenylenediamine. OPTICS EXPRESS 2018; 26:11889-11902. [PMID: 29716105 DOI: 10.1364/oe.26.011889] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
Intrinsic photobleaching and photoluminescence (PL) intermittency of single quantum dots (QDs), originating from photo-oxidation and photo-ionization respectively, are roadblocks for most single-dot applications. Here, we effectively suppress the photobleaching and the PL intermittency of single near-infrared emitting QDs with p-phenylenediamine (PPD). The PPD cannot only be used as a high-efficient reducing agent to remove reactive oxygen species around QDs to suppress the photo-oxidation, but can also bond with the surface defect sites of single QDs to reduce electron trap states to suppress the photo-ionization. It is shown that the survival time of single QDs, the on-state probability of PL intensity traces, and the total number of emitted photons are significantly increased for single QDs in PPD compared with that on glass coverslip.
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