Stability of core-shell structure CsPbX3@SiO2 (X = Cl,Br) perovskite quantum dots

被引：2
|
作者：
Ma, Shi-Yu [1 ]
Li, Jin-Kai [1 ]
Liu, Zong-Ming [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2024年 / 843卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
fluorescence Stability; Encapsulation; Core-shell structure; Perovskite quantum dots; LIGHT-EMITTING-DIODES; CSPBX3; X; NANOCRYSTALS; PHOTOLUMINESCENCE; EFFICIENT; COLOR; CI; BR;
D O I：
10.1016/j.cplett.2024.141242
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, CsPbX3@SiO2 (X = Cl, Br) with cubic morphology and stable optical properties have been developed. The average thickness of the SiO2 shell is 2 similar to 6 nm, which has the effect of protecting CsPbX3 and isolating the external environment, passivating the surface and reducing the defect density, thus greatly improving the stability of CsPbX3 PQDs. Based on this, the advantages of APTES as a preparation system CsPbX3@SiO2 is revealed, the mechanism diagram is drawn and the stability improvement mechanism CsPbX3@SiO2 is analyzed in detail, which provides a new idea for the stability improvement of CsPbX3 perovskite quantum dots.
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页数：10
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