化学
三碘化物
锡
机制(生物学)
铅(地质)
钙钛矿(结构)
无机化学
化学工程
有机化学
物理化学
工程类
哲学
地质学
地貌学
认识论
电解质
色素敏化染料
电极
作者
Asayil Alsulami,Luis Lanzetta,Luis Huerta Hernandez,Diego Rosas Villalva,Anirudh Sharma,Sandra P. Gonzalez Lopez,Abdul‐Hamid Emwas,Aren Yazmaciyan,Frédéric Laquai,İlhan Yavuz,Derya Baran
摘要
Mixed tin-lead (Sn-Pb) halide perovskites stand out as promising materials for next-generation photovoltaics and near-infrared optoelectronics. However, their sensitivity to oxidative degradation remains a major hurdle toward their widespread deployment. A holistic understanding of their oxidation processes considering all their constituent ions is therefore essential to stabilize these materials. Herein, we reveal that A-site cation choice plays an inconspicuous yet crucial role in determining Sn-Pb perovskite stability toward oxidation. Comparing typical A-site compositions, we show that thin films and solar cells containing cesium are more resistant to oxidative stress relative to their methylammonium analogs. We identify degradation in these compositions to be closely linked to the presence of triiodide, a harmful species evolving from native I
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