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Degradation mechanism of hybrid tin-based perovskite solar cells and the critical role of tin (IV) iodide

Chemistry

Degradation mechanism of hybrid tin-based perovskite solar cells and the critical role of tin (IV) iodide

L. Lanzetta, T. Webb, et al.

Discover the challenges posed by the stability of tin perovskites in photovoltaics. This study by renowned authors, including Luis Lanzetta and Thomas Webb, explores the degradation mechanisms of innovative 2D/3D tin perovskite films, revealing a cyclic degradation process influenced by moisture and oxygen. Learn how these insights could pave the way for greater stability in solar technology.

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Playback language: English
Abstract
Tin perovskites are promising lead-perovskite alternatives in photovoltaics, but their poor stability hinders competitive performance. This study elucidates the degradation mechanism of 2D/3D tin perovskite films based on (PEA)<sub>0.2</sub>(FA)<sub>0.8</sub>SnI<sub>3</sub>. SnI<sub>4</sub>, a degradation product, evolves into iodine via moisture and oxygen, creating a cyclic degradation mechanism. Perovskite stability depends on the hole transport layer, which can be exploited to mitigate degradation.
Publisher
Nature Communications
Published On
May 14, 2021
Authors
Luis Lanzetta, Thomas Webb, Nourdine Zibouche, Xinxing Liang, Dong Ding, Ganghong Min, Robert J. E. Westbrook, Benedetta Gaggio, Thomas J. Macdonald, M. Saiful Islam, Saif A. Haque
Tags
tin perovskites
photovoltaics
degradation mechanism
2D/3D films
perovskite stability
hole transport layer
cyclic degradation

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