Stable CsPbBr3 Nanocrystals Embedded in SiO2 for Backlight Display Applications

被引：5
作者：
Liang, Xiaojuan [1 ]
Chen, Wenya [2 ]
Yang, Jiapeng [1 ]
Liu, Xiaoting [1 ]
Fang, Xiaoli [3 ]
Xiang, Weidong [1 ]
机构：
[1] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China
[2] Wenzhou Univ, Coll Life & Environm Sci, Wenzhou 325035, Peoples R China
[3] Wenzhou Ctr Dis Control & Prevent, Wenzhou 325035, Peoples R China
来源：
ACS APPLIED ELECTRONIC MATERIALS | 2023年 / 5卷 / 04期
基金：
中国国家自然科学基金;
关键词：
CsPbBr3-SiO2; dual encapsulation; optical stability; wide color gamut; backlight displays; PEROVSKITE QUANTUM DOTS; FILMS; FABRICATION; PACKAGE; GROWTH; ROBUST;
D O I：
10.1021/acsaelm.3c00128
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
As we all know, the various excellent properties of perovskite nanocrystals (NCs) have attracted attention in recent years. However, thei work stability is still the bottleneck to be solved urgently in their commercialization process. In this study, we encapsulated CsPbBr3 quantum dots in nano-SiO2 (inorganic) by a high-temperature sintering method and investigated the changes in optical stability before and after encapsulation. The SiO2 shell can effectively suppress anion exchange and photo-degradation, which greatly improves the photothermal stability of shell NCs. Preparation of composite films by mixing CsPbBr3-SiO2 (inorganic) and polymer material PMMA (organic) by a solvent solution method can further enhance its stability. Meanwhile, the backlight display device realized the practical application of CsPbBr3-SiO2/CsPbBr1.2I1.8@PMMA with a wide color gamut (112% of the NTSC, 84% of the Rec. 2020). This is a very significant step to open up the awkward situation of the practical application of perovskite NC materials in backlight displays.
引用
收藏
页码：2309 / 2317
页数：9
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