面向高稳定性太阳能电池开发的卤化物钙钛矿稳定 性提升策略

Perovskite is rising as the most promising material for the next generation of solar cells, due to its high efficiency, low cost, and convenient fabrication. However, the stability of perovskite solar cells remains to be a challenge towards large-scale application. Perovskite materials play a key role in improving the stability of PSCs, and tremendous efforts have been committed to stabilizing the perovskite materials, including composition regulation, crystallization control, and interface optimization. Herein we review the state-of-the-art strategies to improve the stability of perovskite layers in PSCs, and important strategies are highlighted. We analyze in-depth the influence of each site ion on perovskite structural stability and summarize the important progress of these structures showing superior stability. We then summarize the use of additives to regulate perovskite crystallization and defect passivation and elaborate the related mechanisms. Furthermore, the pros and cons of different interface treatment methods used in perovskite solar cells are discussed