Determining the Chemical Origin of the Photoluminescence of Cesium–Bismuth–Bromide Perovskite Nanocrystals and Improving the Luminescence via Metal Chloride Additives

We report the synthesis of Bi-based lead-free halide perovskite nanocrystals (NCs) via a ligand-assisted reprecipitation (LARP) method. Detailed chemical analysis of the synthesized Cs–Bi–Br NCs, w...