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CH₃NH₃PbI₃ perovskite single crystals: surface photophysics and their interaction with the environment.

ABSTRACT: Here we identify structural inhomogeneity on a micrometer scale across the surface of a CH₃NH₃PbI₃ perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster photo-carrier recombination. These effects are inherently present at the edge of the crystal, and further enhanced upon water intercalation, as a preliminary step in the hydration of the perovskite material.

SUBMITTER: Grancini G

PROVIDER: S-EPMC5512535 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

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CH3NH3PbI3 perovskite single crystals: surface photophysics and their interaction with the environment.

Grancini G G D'Innocenzo V V Dohner E R ER Martino N N Srimath Kandada A R AR Mosconi E E De Angelis F F Karunadasa H I HI Hoke E T ET Petrozza A A

Chemical science 20150917 12

Here we identify structural inhomogeneity on a micrometer scale across the surface of a CH3NH3PbI3 perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster photo-carrier recombination. These effects are inherently present at the edge of the crystal, and further enhanced upon water intercalation, as a preliminary step in the hydration of the perovskite material. ...[more]

PMID: 28757989

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