Structural chemistry of layered lead halide perovskites containing single octahedral layers.

ABSTRACT: We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX ₄, A ₂PbX₄ or A A'PbX ₄, where A and A' are organic ammonium cations and X = Cl, Br or I. These compounds may be considered as layered perovskites, containing isolated, infinite layers of corner-sharing PbX ₄ octahedra separated by the organic species. First, over 250 crystal structures were extracted from the CCDC and classified in terms of unit-cell metrics and crystal symmetry. Symmetry mode analysis was then used to identify the nature of key structural distortions of the [PbX ₄]_∞ layers. Two generic types of distortion are preva

SUBMITTER: McNulty JA 

PROVIDER: S-EPMC8256700 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature