In situ formation of red perovskite nanocrystals for improved stability

Yuze Zhang; Zhenwei Ren; Hengfei Shi; Chenzhao Luo; Huifeng Ji; Yu Chen

doi:10.1117/12.3034360

5 July 2024 In situ formation of red perovskite nanocrystals for improved stability

Yuze Zhang, Zhenwei Ren, Hengfei Shi, Chenzhao Luo, Huifeng Ji, Yu Chen

Proceedings Volume 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024); 131832C (2024) https://doi.org/10.1117/12.3034360
Event: The 3rd International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 2024, Wuhan, China

Abstract

As one of the key parts of display devices, the selection of luminescent materials is crucial to promote the development of display technology. Fully inorganic perovskite quantum dots (QDs) are ideal light-emitting materials for next-generation display devices. However, quantum dots based on CsPbX₃ (X=chlorine, bromine, iodine) have poor stability and are vulnerable to external environmental erosion (such as oxygen, water) decomposition, damaging optical properties. In this work, we used mesoporous silica to protect perovskite by growing CsPbBr_xI_3-x in situ in mesoporous silica. Compared with the red perovskite quantum dots synthesized by traditional methods, the stability was improved, More than 96% of the PL intensity was maintained after 30 days of storage under environmental conditions. There was no significant change after continuous heating at 100°C for 60 min, and more than 80% of the PL intensity was maintained after 5W blue light irradiation for 48 h at 365 nm excitation wavelength.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yuze Zhang, Zhenwei Ren, Hengfei Shi, Chenzhao Luo, Huifeng Ji, and Yu Chen "In situ formation of red perovskite nanocrystals for improved stability", Proc. SPIE 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 131832C (5 July 2024); https://doi.org/10.1117/12.3034360

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