Tin–Lead Perovskite Solar Cells with Enhanced Reverse Bias Stability

作者：Luis Lanzetta, Luis Huerta Hernandez, Badri Vishal, Xu Han, Anirudh Sharma, Stefaan De Wolf, Derya Baran · 发表于：ACS Energy Letters · 年份：2025 · DOI：10.1021/acsenergylett.5c00727 · 被引用次数：18 · 研究领域：Perovskite Materials and Applications、Conducting polymers and applications、Chalcogenide Semiconductor Thin Films

We address reverse bias instability in tin–lead perovskite solar cells by introducing Cr/Cu bilayer electrodes in their electron-selective contacts, which raise thermal breakdown voltage from −7.6 V to −14.5 V. Chromium prevents catastrophic device failure by mitigating hotspot shunting, being chemically stable against I 2 formed during reverse bias stress.