Yuan Shihao, Zheng Daming, Zhang Ting, Wang Yafei, Qian Feng, Wang Lei, Li Xiaobo, Zheng Hualin, Diao Zecheng, Zhang Peng, Pauporté Thierry, Li Shibin
State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China.
Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), UMR8247, Paris, France.
Nat Commun. 2025 Feb 28;16(1):2052. doi: 10.1038/s41467-025-57303-w.
Scalable fabrication of perovskite films with homogeneous structure remains a critical challenge in bridging power conversion efficiency gap between solar modules and laboratory-scale cells. To address this, we propose a slot-die coating strategy with pyrrodiazole additives in the perovskite precursor solution to simultaneously immobilize lead iodide and formamidinium iodide. This approach enhances wet film stability by suppressing colloidal aggregation, retards the crystal growth process, and ensures a consistent growth rate across the films. These effects promote the formation of large, monolithic grains, enabling large-area perovskite films with homogeneous structure, excellent uniformity, and low defect density under ambient conditions. Using this strategy, we achieved 10 cm × 10 cm inverted perovskite solar modules with a certified efficiency of 20.3%, along with good working stability and excellent application demonstration, showcasing its great potential for industrialization.
在缩小太阳能组件与实验室规模电池之间的功率转换效率差距方面，可扩展制造具有均匀结构的钙钛矿薄膜仍然是一项关键挑战。为解决这一问题，我们提出了一种在钙钛矿前驱体溶液中添加吡唑二唑添加剂的狭缝式涂布策略，以同时固定碘化铅和碘化甲脒。这种方法通过抑制胶体聚集来提高湿膜稳定性，延缓晶体生长过程，并确保整个薄膜具有一致的生长速率。这些效应促进了大尺寸单晶颗粒的形成，从而在环境条件下实现了具有均匀结构、优异均匀性和低缺陷密度的大面积钙钛矿薄膜。采用这种策略，我们制备出了尺寸为10 cm×10 cm的倒置钙钛矿太阳能组件，认证效率为20.3%，同时具有良好的工作稳定性和出色的应用示范效果，展示了其巨大的工业化潜力。
