Journal
NANOPHOTONICS
Volume 10, Issue 8, Pages 1943-1965Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2020-0681
Keywords
coherent dynamics; exciton dynamics; perovskite nanocrystals; spin dynamics; ultrafast spectroscopy
Categories
Funding
- National Key R&D Program of China [2017YFA0303700, 2018YFA0209101]
- National Science Foundation of China [21922302, 21873047, 11904168, 91833305, 91850105]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fundamental Research Funds for the Central University
Ask authors/readers for more resources
Perovskite semiconductor nanocrystals have shown great potential in optoelectronic applications, and their performances rely on the excited-state dynamics, with recent studies focusing on photoinduced carrier dynamics, spin dynamics, and coherent exciton dynamics. Future research should aim to address controversial results and unresolved origins to fully understand the excited-state dynamics.
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available