Strain-Negligible Eu²⁺ Doping Enabled Color-Tunable Harsh Condition-Resistant Perovskite Nanocrystals for Superior Light-Emitting Diodes.

ABSTRACT: Cesium lead halide (CsPbX₃, X = Br, Cl, I) perovskite nanocrystals (NCs) possess tunable band gaps across the entire visible spectral range and are promising for various optoelectronic device applications. However, poor performance in adverse conditions limits their further development in practical optoelectronics. Herein, highly stable perovskite NCs are developed by doping europium(II) (Eu²⁺) into the B-site of CsPbBr₃ with negligible lattice distortion/strain. Eu²⁺-doped CsPbBr₃ NCs exhibit tunable green-to-cyan emissions, high photoluminescence quantum yield, and good resistance to harsh conditions, including ultraviolet irradiation, erosion of moisture, and corrosion of polar solvent molecules. In particular, the thermal stability

SUBMITTER: Jin M 

PROVIDER: S-EPMC9875234 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature