材料科学
光致发光
量子点
微观结构
量子产额
掺杂剂
钙钛矿(结构)
发光
光电子学
光电效应
分析化学(期刊)
光学
兴奋剂
化学工程
复合材料
荧光
化学
物理
色谱法
工程类
作者
Yunbo Li,Wei Li,yunlong yu,Chan Zheng
摘要
All inorganic CsPbX 3 (X = Cl, Br, I) perovskite quantum dots (PQDs) exhibit excellent photoelectric properties, such as high photoluminescence quantum yield, exceptional defect tolerance, and a long carrier diffusion length. However, their poor stability limits their applications. In this study, CsPbBr 3 PQDs were precipitated in a phosphate glass matrix by a melt quenching method. The influences of Mn 2+ and Eu 3+ dopants on the microstructure and optical properties of CsPbBr 3 PQDs glass were investigated in detail. The DSC and XRD results reveal that Mn 2+ /Eu 3+ can act as a nucleating agent to promote the precipitation of CsPbBr 3 PQDs in the glass matrix and optimize its microstructure. Simultaneously, PL spectra shows that appropriate Mn 2+ /Eu 3+ doping concentration can enhance the optical performance of CsPbBr 3 PQDs glass. The luminescence intensity increases by 46.9% and 44.3%, respectively, with the additions of these dopants. Finally, Mn 2+ and Eu 3+ single-doped CsPbBr 3 PQDs glass is proved to have excellent broadband UV spectral response characteristics, indicating its potential application for photoelectric detection.
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