量子点
钙钛矿(结构)
材料科学
卤化物
光电效应
成核
带隙
光电子学
半导体
发光
潜在井
离子
纳米技术
化学物理
光化学
无机化学
化学
结晶学
有机化学
作者
Hang Li,Jiazhen He,Xiaoqian Wang,Qi Liu,Xuemin Luo,Mingwei Wang,Jinfeng Liu,Cheng‐Qi Liu,Yong Liu
出处
期刊:Materials
[MDPI AG]
日期:2024-04-01
卷期号:17 (7): 1607-1607
被引量:2
摘要
As a direct band gap semiconductor, perovskite has the advantages of high carrier mobility, long charge diffusion distance, high defect tolerance and low-cost solution preparation technology. Compared with traditional metal halide perovskites, which regulate energy band and luminescence by changing halogen, perovskite quantum dots (QDs) have a surface effect and quantum confinement effect. Based on the LaMer nucleation growth theory, we have synthesized CsPbBr3 QDs with high dimensional homogeneity by creating an environment rich in Br− ions based on the general thermal injection method. Moreover, the size of the quantum dots can be adjusted by simply changing the reaction temperature and the concentration of Br− ions in the system, and the blue emission of strongly confined pure CsPbBr3 perovskite is realized. Finally, optical and electrochemical tests suggested that the synthesized quantum dots have the potential to be used in the field of photocatalysis.
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