Preparation and photoluminescence of Cs4PbBr6 perovskite quantum dot embedded in borophosphate glass

Zero dimensional perovskite CsPbX3 and Cs4PbX6 (XI, Br and Cl) quantum dots are becoming a potential object for optoelectronic device applications. However, the instability of perovskite CsPbX3 and Cs4PbX6 quantum dots in air hinders their wide practical application. The perovskite quantum dots embedded in glass matrix can improve their stability, and the perovskite CsPbX3 quantum dots embedded in the glass were extensively reported. In this work, a novel borophosphate glass containing Cs4PbBr6 quantum dots was prepared. The morphological characteristics of Cs4PbBr6 quantum dots in the glass were analyzed by transmission electron microscopy. The luminescence characteristics of Cs4PbBr6 quantum dots are exhibiting the green luminescence. The luminescence intensity of Cs4PbBr6 quantum dots embedded in glass can still maintain about 94% after immersion in water for 240 h, which overcome the instability of perovskite Cs4PbBr6 quantum dots affected easily by environment. The results demonstrated that the boron phosphorus fluorine antimony glass containing Cs4PbBr6 quantum dots may have a potential application prospect in solid-state lighting and display area.