Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals
Perovskite semiconductor nanocrystals have emerged as a promising family of materials for optoelectronic applications including light-emitting diodes, lasers, light-to-electricity convertors and quantum light emitters. The performances of these devices are fundamentally dependent on different aspect...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2021-02-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2020-0681 |
| _version_ | 1798013959818706944 |
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| author | Yu Buyang Zhang Chunfeng Chen Lan Qin Zhengyuan Huang Xinyu Wang Xiaoyong Xiao Min |
| author_facet | Yu Buyang Zhang Chunfeng Chen Lan Qin Zhengyuan Huang Xinyu Wang Xiaoyong Xiao Min |
| author_sort | Yu Buyang |
| collection | DOAJ |
| description | Perovskite semiconductor nanocrystals have emerged as a promising family of materials for optoelectronic applications including light-emitting diodes, lasers, light-to-electricity convertors and quantum light emitters. The performances of these devices are fundamentally dependent on different aspects of the excited-state dynamics in nanocrystals. Herein, we summarize the recent progress on the photoinduced carrier dynamics studied by a variety of time-resolved spectroscopic methods in perovskite nanocrystals. We review the dynamics of carrier generation, recombination and transport under different excitation densities and photon energies to show the pathways that underpin the photophysics for light-emitting diodes and solar cells. Then, we highlight the up-to-date spin dynamics and coherent exciton dynamics being manifested with the exciton fine levels in perovskite semiconductor nanocrystals which are essential for potential applications in quantum information technology. We also discuss the controversial results and the possible origins yet to be resolved. In-depth study toward a comprehensive picture of the excited-state dynamics in perovskite nanocrystals may provide the key knowledge of the device operation mechanism, enlighten the direction for device optimization and stimulate the adventure of new conceptual devices. |
| first_indexed | 2024-04-11T15:11:05Z |
| format | Article |
| id | doaj.art-e3d850d7b60b40c593174ea3920cdcfc |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-11T15:11:05Z |
| publishDate | 2021-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-e3d850d7b60b40c593174ea3920cdcfc2022-12-22T04:16:39ZengDe GruyterNanophotonics2192-86142021-02-011081943196510.1515/nanoph-2020-0681Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystalsYu Buyang0Zhang Chunfeng1Chen Lan2Qin Zhengyuan3Huang Xinyu4Wang Xiaoyong5Xiao Min6National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing210093, ChinaDepartment of Physics, University of Arkansas, Fayetteville, AR72701, USAPerovskite semiconductor nanocrystals have emerged as a promising family of materials for optoelectronic applications including light-emitting diodes, lasers, light-to-electricity convertors and quantum light emitters. The performances of these devices are fundamentally dependent on different aspects of the excited-state dynamics in nanocrystals. Herein, we summarize the recent progress on the photoinduced carrier dynamics studied by a variety of time-resolved spectroscopic methods in perovskite nanocrystals. We review the dynamics of carrier generation, recombination and transport under different excitation densities and photon energies to show the pathways that underpin the photophysics for light-emitting diodes and solar cells. Then, we highlight the up-to-date spin dynamics and coherent exciton dynamics being manifested with the exciton fine levels in perovskite semiconductor nanocrystals which are essential for potential applications in quantum information technology. We also discuss the controversial results and the possible origins yet to be resolved. In-depth study toward a comprehensive picture of the excited-state dynamics in perovskite nanocrystals may provide the key knowledge of the device operation mechanism, enlighten the direction for device optimization and stimulate the adventure of new conceptual devices.https://doi.org/10.1515/nanoph-2020-0681coherent dynamicsexciton dynamicsperovskite nanocrystalsspin dynamicsultrafast spectroscopy |
| spellingShingle | Yu Buyang Zhang Chunfeng Chen Lan Qin Zhengyuan Huang Xinyu Wang Xiaoyong Xiao Min Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals Nanophotonics coherent dynamics exciton dynamics perovskite nanocrystals spin dynamics ultrafast spectroscopy |
| title | Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| title_full | Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| title_fullStr | Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| title_full_unstemmed | Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| title_short | Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| title_sort | ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals |
| topic | coherent dynamics exciton dynamics perovskite nanocrystals spin dynamics ultrafast spectroscopy |
| url | https://doi.org/10.1515/nanoph-2020-0681 |
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