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Electron band tuning of organolead halide perovskite materials by methylammonium and formamidinium halide post-treatment for high-efficiency solar cells

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Abstract

Perovskite crystals post-treated with methylammonium and formamidinium halide materials were compared. The bandgap energy of perovskites changed upon incorporation of CH5N2+, Br, and Cl ions. Perovskites treated with formamidinium iodide yielded the best efficiency of 20.06% due to an increase in photocurrent density by decreased bandgap energy.

Graphical abstract: Electron band tuning of organolead halide perovskite materials by methylammonium and formamidinium halide post-treatment for high-efficiency solar cells

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Article information


Submitted
19 Nov 2019
Accepted
17 Dec 2019
First published
18 Dec 2019

Chem. Commun., 2020, Advance Article
Article type
Communication

Electron band tuning of organolead halide perovskite materials by methylammonium and formamidinium halide post-treatment for high-efficiency solar cells

A. Kogo and M. Chikamatsu, Chem. Commun., 2020, Advance Article , DOI: 10.1039/C9CC09002A

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