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

Title
Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth
Author
성명모
Keywords
ORGANOMETAL HALIDE PEROVSKITES; SOLAR-CELLS; DIFFUSION; PHOTOVOLTAICS; GRAINS; LAYERS
Issue Date
2017-07
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v. 8, Article no. 15882
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 x 3 inch) with a high carrier mobility of 45.64 cm(2) V-1 s(-1). We also used these single-crystal perovskite thin films to construct solar cells with a lateral configuration. Their active-area power conversion efficiency shows a highest value of 4.83%, which exceeds the literature efficiency values of lateral perovskite solar cells.
URI
https://www.nature.com/articles/ncomms15882http://repository.hanyang.ac.kr/handle/20.500.11754/114877
ISSN
2041-1723
DOI
10.1038/ncomms15882
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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