Ultra-stable self-crystallized CsPbBr3 perovskite quantum dots glass for high power remote LED encapsulated

Abstract

Embedding perovskite quantum dots (QDs) into glass can improve the stability of moisture resistance, anti-photoaging and anti-ultraviolet aging, but the temperature stability cannot be solved well. Herein, we proposed to fabricate devices with high temperature stability through remote encapsulated of self-crystallized CsPbBr3 QDs@glass, which the CsPbBr3 QDs were prepared by one-step melting and self-crystallized, and the photoluminescence quantum yield (PLQY) is 68.5%. At the same time, the temperature field conditions of the direct and remote encapsulated methods are compared and analyzed in detail. When the current is 400 mA, the heat generated by the remote encapsulated to the self-crystallized CsPbBr3 QDs@glass is 40.4% of that generated by the direct encapsulated. In remote encapsulated, the heat generated by LED has less effect on QDs glass than in directly encapsulated.