Moisture-Assisted near-UV Emission Enhancement of Lead-Free Cs₄CuIn₂Cl₁₂ Double Perovskite Nanocrystals.

ABSTRACT: Lead-based halide perovskite nanocrystals (NCs) are recognized as emerging emissive materials with superior photoluminescence (PL) properties. However, the toxicity of lead and the swift chemical decomposition under atmospheric moisture severely hinder their commercialization process. Herein, we report the first colloidal synthesis of lead-free Cs₄CuIn₂Cl₁₂ layered double perovskite NCs via a facile moisture-assisted hot-injection method stemming from relatively nontoxic precursors. Although moisture is typically detrimental to NC synthesis, we demonstrate that the presence of water molecules in Cs₄CuIn₂Cl₁₂ synthesis enhances the PL quantum yield (mainly in the near-UV range), induces a morphological transformation from 3D

SUBMITTER: Liu M 

PROVIDER: S-EPMC8759080 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature