Out-of-equilibrium processes in crystallization of organic-inorganic perovskites during spin coating.

ABSTRACT: Complex phenomena are prevalent during the formation of materials, which affect their processing-structure-function relationships. Thin films of methylammonium lead iodide (CH₃NH₃PbI₃, MAPI) are processed by spin coating, antisolvent drop, and annealing of colloidal precursors. The structure and properties of transient and stable phases formed during the process are reported, and the mechanistic insights of the underlying transitions are revealed by combining in situ data from grazing-incidence wide-angle X-ray scattering and photoluminescence spectroscopy. Here, we report the detailed insights on the embryonic stages of organic-inorganic perovskite formation. The physicochemical evolution during the conversion proceeds in four steps: i) An instant nucleati

SUBMITTER: Pratap S 

PROVIDER: S-EPMC8463609 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature