CsPbBr3 Perovskite Nanocrystal, Preparation Method Thereof, and Perovskite Film Comprising the Same

Abstract

The present disclosure provides a CsPbBr3 perovskite nanocrystal characterized by doping with 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA), wherein the PTCDA forms bonds with the lead atoms in the CsPbBr3 perovskite nanocrystal via the oxygen atoms of the C═O group. The present disclosure also provides a preparation method of the foregoing CsPbBr3 perovskite nanocrystal, characterized by adding PTCDA when preparing the CsPbBr3 perovskite precursor solution. Furthermore, the present disclosure provides a perovskite film comprising the foregoing CsPbBr3 perovskite nanocrystal. With the method of doping PTCDA into CsPbBr3 perovskite according to the present disclosure, a CsPbBr3 perovskite doped with PTCDA with reduced defect density, enhanced stability in high-humidity environments, and simultaneously having improved electron transport capability can be obtained.

Dependencies are inferred from the claim text.