Influences of Mn2+/Eu3+dopants on the microstructures and optical properties of glass-embedded CsPbBr3 quantum dots

All inorganic CsPbX3 (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, CsPbBr3 PQDs were precipitated in a phosphate glass matrix by a melt quenching method. The influences of Mn2+ and Eu3+ dopants on the microstructure and optical properties of CsPbBr3 PQDs glass were investigated in detail. The DSC and XRD results reveal that Mn2+/Eu3+ can act as a nucleating agent to promote the precipitation of CsPbBr3 PQDs in the glass matrix and optimize its microstructure. Simultaneously, PL spectra shows that appropriate Mn2+/Eu3+ doping concentration can enhance the optical performance of CsPbBr3 PQDs glass. The luminescence intensity increases by 46.9% and 44.3%, respectively, with the additions of these dopants. Finally, Mn2+ and Eu3+ single-doped CsPbBr3 PQDs glass is proved to have excellent broadband UV spectral response characteristics, indicating its potential application for photoelectric detection.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement