Stable and luminescent cesium copper halide nanocrystals embedded in flexible polymer fibers for fabrication of down-converting WLEDs.

ABSTRACT: Recently, CsPbX₃ (X = I, Br, Cl) perovskite nanocrystals (NCs) have drawn wide attention owing to their outstanding photophysical and optoelectronic properties. However, the toxicity of such NCs remained a big challenge for further commercialization. Herein, we adopt facile methods for synthesizing green-emissive Cs₃Cu₂Cl₅ and blue-emissive Cs₃Cu₂Br_2.5I_2.5 perovskite NCs that exhibit broad emission spectra with large Stokes shifts. These NCs showed photoluminescence quantum yields (PLQY) up to 65% (Cs₃Cu₂Cl₅ NCs) and 32% (Cs₃Cu₂Br_2.5I_2.5 NCs) with limited stabilities. To further improve the stability, the NCs were blended with

SUBMITTER: Kar MR 

PROVIDER: S-EPMC10629056 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature