Tin–Lead Perovskite Solar Cells with Enhanced Reverse Bias Stability
Luis Lanzetta, Luis Huerta Hernandez, Badri Vishal, Xu Han, Anirudh Sharma, Stefaan De Wolf, Derya Baran
Abstract
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.
Topics & Concepts
Perovskite (structure)TinMaterials scienceLead (geology)Photovoltaic systemNanotechnologyChemical engineeringEngineering physicsMetallurgyElectrical engineeringEngineeringGeologyGeomorphologyPerovskite Materials and ApplicationsConducting polymers and applicationsChalcogenide Semiconductor Thin Films