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绿色发光CsPbBr钙钛矿纳米晶体的光降解及自恢复的适用性影响

Implications for applicability of the photodegradation and self-recovery of green-emitting CsPbBr perovskite nanocrystals.

作者信息

Iso Yoshiki, Saito Shunsuke, Toyoda Hikari, Isobe Tetsuhiko

机构信息

Department of Applied Chemistry, Faculty of Science and Technology, Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan

出版信息

RSC Adv. 2024 Aug 19;14(36):26059-26065. doi: 10.1039/d4ra04567j. eCollection 2024 Aug 16.

DOI:10.1039/d4ra04567j
PMID:39161439
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11332588/
Abstract

CsPbBr nanocrystals (NCs) synthesized by the conventional hot-injection method are photochromatic luminescent nanomaterials due to the photoinduced desorption and re-adsorption of the surface ligands. The apparent color and the luminescence intensity were changed significantly during excitation light irradiation and following dark storage; however, the emission wavelength was almost retained. This work investigates the change in emission color of light-emitting diode lighting using the CsPbBr NCs to realize photochromatic luminescence. The results showed definite shifts in emission color caused by changes in optical absorption and green luminescence intensity of the NCs, potentially broadening the application feasibility of CsPbBr NCs as photochromatic luminescent nanomaterials.

摘要

通过传统热注入法合成的CsPbBr纳米晶体（NCs）是光致变色发光纳米材料，这归因于表面配体的光致解吸和再吸附。在激发光照射和随后的暗储存过程中，表观颜色和发光强度发生了显著变化；然而，发射波长几乎保持不变。这项工作研究了使用CsPbBr NCs的发光二极管照明发射颜色的变化，以实现光致变色发光。结果表明，由于NCs的光吸收和绿色发光强度的变化，发射颜色发生了明显的偏移，这可能拓宽了CsPbBr NCs作为光致变色发光纳米材料的应用可行性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/20e43ddf1188/d4ra04567j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/34b620216690/d4ra04567j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/ce552ad2357d/d4ra04567j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/224013b4ea5e/d4ra04567j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/d90348734f0d/d4ra04567j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/20e43ddf1188/d4ra04567j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/34b620216690/d4ra04567j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/ce552ad2357d/d4ra04567j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/224013b4ea5e/d4ra04567j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/d90348734f0d/d4ra04567j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05d2/11332588/20e43ddf1188/d4ra04567j-f5.jpg

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