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Synthesis of Size-Adjustable CsPbBr Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications

Materials, ISSN: 1996-1944, Vol: 17, Issue: 7
2024
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Article Description

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 CsPbBr 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 CsPbBr 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.

Bibliographic Details

Li, Hang; He, Jiazhen; Wang, Xiaoqian; Liu, Qi; Luo, Xuemin; Wang, Mingwei; Liu, Jinfeng; Liu, Chengqi; Liu, Yong

MDPI AG

Materials Science; Physics and Astronomy

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