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13 September 2024 Temperature-dependent photoluminescence of CsPbBr3 nanocrystals
Chen Chen, Wenzhi Wu
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Proceedings Volume 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024); 1325417 (2024) https://doi.org/10.1117/12.3039085
Event: Fourth International Conference on Optics and Image Processing (ICOIP 2024), 2024, Chongqing, China
Abstract
Inorganic perovskite CsPbBr3 has excellent optical properties such as high photoluminescence quantum yield (PLQY), strong light absorption, adjustable band gap, narrow band emission, etc., and has wide application prospects in light emitting diodes, photodetectors, lasers and solar cells. In this paper, CsPbBr3 nanocrystals (NCs) was synthesized by ligand-assisted reprecipitation (LARP) method, and the pump fluence and temperature-dependent photoluminescence (PL) properties of CsPbBr3 NCs were studied by steady-state PL combined with spectral analysis and the existence of single-photon absorption was proved. The PL intensity decreases with the increase of temperature, the peak position of PL blue shifts with the increase of temperature, and the larger exciton binding energy is conducive to promoting radiation recombination. The longitudinal optical phonon energy of CsPbBr3 NCs is 28.8 meV, and the material has good thermal stability.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Chen Chen and Wenzhi Wu "Temperature-dependent photoluminescence of CsPbBr3 nanocrystals", Proc. SPIE 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024), 1325417 (13 September 2024); https://doi.org/10.1117/12.3039085
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KEYWORDS
Photoluminescence
Perovskite
Nanocrystals
Thermal stability
Optical properties
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