材料科学
结晶
色域
光致发光
量子产额
钙钛矿(结构)
发光效率
发光
光电子学
化学工程
量子效率
量子点
纳米技术
光学
荧光
工程类
物理
图层(电子)
作者
Wenying Zhu,Shun Cheng,Eenrou Mei,Ye He,Jiapeng Yang,Ruowang Liu,Xiaojuan Liang,Weidong Xiang
标识
DOI:10.1002/adfm.202408760
摘要
Abstract All‐inorganic perovskite quantum dots (PQDs) are widely applied in photoelectronics because of their high luminous efficiency. However, PQDs have poor stability, which hinders their practical applications. In this study, controllable crystallization of PQDs is achieved by adding Al 2 O 3 to alter the glass network. Next, Na 2 CO 3 (aq) washing‐heating treatment is used to improve the protective mechanism. Owing to this dual strategy, the prepared CsPbBr 3 @glass exhibits a high photoluminescence quantum yield (PLQY > 95%) and excellent stability. In a 1000 h accelerated aging experiment, the luminous intensity remains above 96% of the initial intensity. The luminescence intensity shows almost no change after soaking in water for 20 weeks. Finally, the CsPbBr 3 @CsPbBr 1 I 2 @PET light‐conversion film is prepared by the sandwich method. Its color gamut covers 138% of the NTSC 1953 and 102% of the Rec. 2020. This CsPbBr 3 @glass with a high PLQY and ultrastability will broaden the scope of perovskite materials in displays.
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