open access

https://hdl.handle.net/2115/75726

Crystallization of Methylammonium Lead Halide Perovskites by Optical Trapping

英語

single crystals

2018-10-08

Wiley-Blackwell

Angewandte chemie-international edition

57(41)

13424-13428

Single crystals of organolead halide perovskites attract much attention to electrooptical and photovoltaic applications. They are usually prepared in precursor solutions incubated at controlled temperatures or under optimized vapor atmosphere conditions, and thus, multiple perovskite crystals are nucleated all over the solution. Multiple nucleation of crystals prevents efficient use of precursors in the preferential growth of large single crystals. An innovative approach is presented for spatiotemporally controlled, selective nucleation and growth of single crystals of lead halide perovskites by optical trapping with a focused laser beam. Upon such trapping in unsaturated precursor solutions, nucleation of MAPbX(3) (MA = CH3NH3+; X = Cl-, Br-, or I-) is induced at the focal spot through increase in the concentration of perovskite precursors in the focal volume. The rate at which the nucleated crystal grows depends upon whether the perovskite absorbs the trapping laser or not. These findings suggest that optical trapping would be useful to prepare various perovskite single crystals and modify their optical and electronic properties; thereby, offering new methods for engineering of perovskite crystals.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Ken‐ichi Yuyama, Md Jahidul Islam, Kiyonori Takahashi, Takayoshi Nakamura, and Vasudevanpillai Biju. Crystallization of Methylammonium Lead Halide Perovskites by Optical Trapping. Angewandte chemie-international edition. Volume 57, Issue 41. October 8, 2018. Pages 13424-13428, which has been published in final form at https://doi.org/10.1002/anie.201806079 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

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