Preparation of CsPb(Cl/Br)₃/TiO₂:Eu³⁺ composites for white light emitting diodes.

ABSTRACT: The inherent single narrow emission peak and fast anion exchange process of cesium lead halide perovskite CsPbX₃ (X = Cl, Br, I) nanocrystals severely limited its application in white light-emitting diodes. Previous studies have shown that composite structures can passivate surface defects of NCs and improve the stability of perovskite materials, but complex post-treatment processes commonly lead to dissolution of NCs. In this study, CsPb(Cl/Br)₃ NCs was in-situ grown in TiO₂ hollow shells doped with Eu³⁺ ions by a modified thermal injection method to prepare CsPb(Cl/Br)₃/TiO₂:Eu³⁺ composites with direct excitation of white light without additional treatment. Among them, the well-crystalline TiO₂ shells

SUBMITTER: Zhang C 

PROVIDER: S-EPMC10235637 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature