Stable CsPbBr₃ Nanoclusters Feature a Disk-like Shape and a Distorted Orthorhombic Structure.

ABSTRACT: CsPbBr₃ nanoclusters have been synthesized by several groups and mostly employed as single-source precursors for the synthesis of anisotropic perovskite nanostructures or perovskite-based heterostructures. Yet, a detailed characterization of such clusters is still lacking due to their high instability. In this work, we were able to stabilize CsPbBr₃ nanoclusters by carefully selecting ad hoc ligands (benzoic acid together with oleylamine) to passivate their surface. The clusters have a narrow absorption peak at 400 nm, a band-edge emission peaked at 410 nm at room temperature, and their composition is identified as CsPbBr_2.3. Synchrotron X-ray pair distribution function measurements indicate that the clusters exhibit a disk-like shape with a thickness small

SUBMITTER: Zhang B 

PROVIDER: S-EPMC8949727 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature