Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.238
Publication date: 23rd September 2021
Halide perovskites have demonstrated exceptional potential for both light harvesting and light emission applications spanning photovoltaics, light-emitting devices, photodetectors, radiation detectors, memory devices etc. In particular, brightly luminescent perovskite colloidal nanocrystals with their fascinating tunable optical and electronic properties have garnered significant attention across broad disciplines. In this talk, I will focus on their exceptional photophysics such as hot carrier properties, long exciton diffusion lengths as well as nonlinear properties. I will distill their underlying mechanisms and highlight our group’s efforts in some of these areas. A succinct overview of the state-of-the-art as well as the prospective outlook will also be presented.
Keywords: halide perovskite, colloidal nanocrystals, photophysics, nonlinear, carrier dynamics
References
M. J. Li et. al., “Slow Cooling and Highly Efficient Extraction of Hot Carriers in Colloidal Perovskite Nanocrystals”, Nature Communications 8:14350 (2017)
M. Righetto et al., “Hot carriers perspective on the nature of traps in perovskites”, Nature Communications 11: 2712 (2020),
J. Fu et. al., “Hot carrier cooling mechanisms in halide perovskites”, Nature Commununications 8:1300 (2017)
D. Giovanni et. al., “Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping”, Light: Science & Applications 10: 2 (2021)
W. Chen et. al., “Giant five-photon absorption from multidimensional core-shell halide perovskite colloidal nanocrystals”, Nature Communications 8: 15198 (2017)
Huajun He and Tze Chien Sum, “Halide perovskite nanocrystals for multiphoton applications”, Dalton Trans., 49, 15149-15160 (2020)
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