Cesium iodide post-treatment of organic–inorganic perovskite crystals to improve photovoltaic performance and thermal stability

Atsushi Kogo; Masayuki Chikamatsu

doi:10.1039/D0NR05435F

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Cesium iodide post-treatment of organic–inorganic perovskite crystals to improve photovoltaic performance and thermal stability†

Atsushi Kogo

*^a and Masayuki Chikamatsu^a

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* Corresponding authors

^a National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
E-mail: kogo.atsushi@aist.go.jp

Abstract

Organic–inorganic perovskites were treated with a CsI solution to improve the photovoltaic performance and stability. Due to the formation of CsPbI₃ and trap filling in Cs_0.05(FA_0.83MA_0.17)_0.95Pb(I_0.83Br_0.17)₃ perovskites by CsI treatment, the power conversion efficiency was improved to 20.48%. The CsI-treated perovskites exhibited slower degradation under heating at 180 °C than the untreated perovskites.

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Article information

DOI: https://doi.org/10.1039/D0NR05435F
Article type: Communication
Submitted: 21 Jul 2020
Accepted: 01 Oct 2020
First published: 01 Oct 2020

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Nanoscale, 2020,12, 21605-21609

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Cesium iodide post-treatment of organic–inorganic perovskite crystals to improve photovoltaic performance and thermal stability

A. Kogo and M. Chikamatsu, Nanoscale, 2020, 12, 21605 DOI: 10.1039/D0NR05435F

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Cesium iodide post-treatment of organic–inorganic perovskite crystals to improve photovoltaic performance and thermal stability†

Abstract

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Cesium iodide post-treatment of organic–inorganic perovskite crystals to improve photovoltaic performance and thermal stability

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