Presentation
17 March 2023 Understanding efficient up-conversion in CsPbBr3 perovskite nanocrystals
Author Affiliations +
Abstract
CsPbBr3 perovskite nanocrystals have been identified as a potential medium to realize condensed phase optical refrigeration. This is due to its near unity emission quantum yields and efficient anti-Stokes photoluminescence (ASPL). Despite much work on CsPbBr3’s optical response, the origin of its efficient ASPL remains unclear. We conduct detailed optical spectroscopy measurements in conjunction with theory to establish mechanistic insights into CsPbBr3’s up-conversion process. Experimental techniques utilized include: temperature-dependent and detuning energy-dependent ASPL measurements, temperature-tunable photothermal heterodyne absorption spectroscopy, and ultrafast transient differential absorption (TDA) spectroscopy.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhuoming Zhang, Sushrut Ghonge, Shubin Zhang, Yang Ding, Richard Schaller, and Masaru Kuno "Understanding efficient up-conversion in CsPbBr3 perovskite nanocrystals", Proc. SPIE PC12437, Photonic Heat Engines: Science and Applications V, PC124370B (17 March 2023); https://doi.org/10.1117/12.2647626
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KEYWORDS
Nanocrystals

Perovskite

Absorption spectroscopy

Absorption

Heterodyning

Luminescence

Quantum efficiency

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