Air‐Processed Perovskite Solar Cells with >25% Efficiency and High Stability Enabled by Crystallization Modulation and Holistic Passivation

• DOI: 10.1002/adma.202402785
• Publication Date: 2024-05-22T22:54:17Z
• Authors: Xiaoyu Shi; Tianxiao Liu; Yunjie Dou; Xiaodong Hu; Yangyang Liu; Feifei Wang; Lingyuan Wang; Zhijun Ren; Shangshang Chen
• Keywords: Passivation; Carrier lifetime

Organic semiconductors (e.g., PCBM and IDIC) frequently serve as interface passivants for perovskite solar cells (PSCs) due to their beneficial passivation effects on interfaces. However, the interiors of films is greatly limited by poor solubility in polar solvents compatibility issues. Here facile synthesis organic semiconductor nanoparticle (NP) that readily disperse inks reported. Adding these NPs into not only modulates crystallization, improves film quality conductivity, but also achieves holistic bulk passivation. Consequently, blade-coated p-i-n PSCs with ICBA achieve an impressive efficiency 25.1% (independently certified 25.0%), highest reported value air-processed irrespective fabrication methods or device structures. This work develops a novel approach effective converting conventional perovskite-compatible NPs, paving way more efficient stable devices.