Manipulating the formation of cesium lead bromide nanocrystals via oleic acid.

ABSTRACT: To realize the precise modulation among the cesium lead halide perovskite-related phases is one of the most fascinating subjects and has motivated increasing research. The formation mechanisms of different phases of cesium lead halide have not been fully recognized. In this work, we reported the phase-selective synthesis of CsPbBr₃ nanorods and Cs₄PbBr₆ nanocrystals (NCs) in amine-free systems, simply by adjusting the dosage of oleic acid (OA). By utilizing UV-visible absorption spectroscopy, we probed the evolution of the NCs and some lead bromide complex species during syntheses in reaction systems with different OA dosages. An OA-limited condition facilitated the formation of [PbBr₄]^2- and Cs₄PbBr₆ NCs. OA-rich

SUBMITTER: Wang M 

PROVIDER: S-EPMC9909387 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature