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25 May 2022 Spectral properties of cesium lead iodide perovskite nanocrystals in borogermanate glass at different temperatures
Anastasiia Babkina, Aleksandra Pavliuk, Rufina Harisova, Kseniia Zyryanova, Alexander Ignatiev, Nikolai Nikonorov
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Proceedings Volume 12142, Fiber Lasers and Glass Photonics: Materials through Applications III; 121420C (2022) https://doi.org/10.1117/12.2621968
Event: SPIE Photonics Europe, 2022, Strasbourg, France
Abstract
The aim of this work is to investigate temperature effect on spectral properties CsPbI3 perovskite nanocrystals nucleated in borogermanate glass by isothermal heat treatment at different temperatures. The temperature dependence of the first exciton absorption intensity in the heating-cooling cycle has a form of hysteresis loop, which helps determine crystallization and melting temperatures. Considering anomalies on heat curves, a phase transition from a non-perovskite to a cubic crystal structure is found in the range of 420-460℃. The increase of initial nucleation temperature from 470 to 550℃ results in a change of phase transitions temperatures: melting, crystallization, and transition from a non-perovskite to a cubic crystal structure increase in the regions 454-475, 281-301 and 421-459℃ respectively due to quantum-sized effect. Results demonstrate that the cesium lead halide perovskite properties can be stabilized up to 440℃, which greatly exceeds the chemical resistance of perovskites in organic matrix.
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Anastasiia Babkina, Aleksandra Pavliuk, Rufina Harisova, Kseniia Zyryanova, Alexander Ignatiev, and Nikolai Nikonorov "Spectral properties of cesium lead iodide perovskite nanocrystals in borogermanate glass at different temperatures", Proc. SPIE 12142, Fiber Lasers and Glass Photonics: Materials through Applications III, 121420C (25 May 2022); https://doi.org/10.1117/12.2621968
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KEYWORDS
Nanocrystals
Absorption
Crystals
Glasses
Perovskite
Excitons
Temperature metrology
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