Polyurethane/perovskite quantum dot elastomer composite with high stability and self-repairable properties

Abstract

How to improve the stability and processability of organic-inorganic hybrid perovskite quantum dots (OHPQD) is an important topic in recent research. In this work, the stability and machinability of OHPQD were improved by blending with PU elastomer. The CsPbBr 3 −PU composites can be achieved easily by pouring molding process with rather excellent humidity and thermal stability. The tensile strength of 14 ​MPa and elongation of 580% at break of PU/CsPbBr 3 elastomer composites with self-repair properties were obtained, which was attributed to the introduction of disulfide bonds. It lays a foundation for the application of OHPQD. Polyurethane/perovskite quantum dot composites with high environmental stability, excellent mechanical properties and self-healing function are constructed by pouring process. The blending rule and the luminescence mechanism of which are revealed and clarified. It will promote the practical application of perovskite quantum dots in the industrial field.