Relieving the Ion Migration and Increasing Superoxide Resistance with Glutathione Incorporation for Efficient and Stable Perovskite Solar Cells

Perovskite solar cells (PSCs) have the great potential for next-generation energy application, while serious issue about longevity has still been a long-standing concern. The rapid crystallization process would inevitably introduce defects, and perovskite film decomposed rapidly when exposed to water/oxygen. Herein, reduced l-glutathione (GSH) is introduced into precursor tailor passivate thus relief detrimental ion migration. Furthermore, GSH can effectively inhibit formation of superoxide. As result, optimized PSCs demonstrate champion power conversion efficiency 22.89% maintained 91% its initial under ambient environment 1000 h.