Revealing photoluminescence mechanisms of single CsPbBr₃/Cs₄PbBr₆ core/shell perovskite nanocrystals.

ABSTRACT: CsPbBr₃ nanocrystals (NCs) encapsulated by Cs₄PbBr₆ has attracted extensive attention due to good stability and high photoluminescence (PL) emission efficiency. However, the origin of photoluminescence (PL) emission from CsPbBr₃/Cs₄PbBr₆ composite materials has been controversial. In this work, we prepare CsPbBr₃/Cs₄PbBr₆ core/shell nanoparticles and firstly study the mechanism of its photoluminescence (PL) at the single-particle level. Based on photoluminescence (PL) intensity trajectories and photon antibunching measurements, we have found that photoluminescence (PL) intensity trajectories of individual CsPbBr₃/Cs₄PbBr₆ core/shell NCs vary from the uniform l

SUBMITTER: Ding H 

PROVIDER: S-EPMC9041139 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature