Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth.

ABSTRACT: We report a facile roll-printing method, geometrically confined lateral crystal growth, for the fabrication of large-scale, single-crystal CH₃NH₃PbI₃ perovskite thin films. Geometrically confined lateral crystal growth is based on transfer of a perovskite ink solution via a patterned rolling mould to a heated substrate, where the solution crystallizes instantly with the immediate evaporation of the solvent. The striking feature of this method is that the instant crystallization of the feeding solution under geometrical confinement leads to the unidirectional lateral growth of single-crystal perovskites. Here, we fabricated single-crystal perovskites in the form of a patterned thin film (3 × 3 inch) with a high carrier mobility of 45.64 cm² V

SUBMITTER: Lee L 

PROVIDER: S-EPMC5508126 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature