材料科学
钝化
钙钛矿(结构)
带隙
非阻塞I/O
能量转换效率
化学工程
光电子学
纳米技术
有机化学
催化作用
化学
工程类
图层(电子)
作者
Ming Cheng,Yuwei Duan,Dexin Zhang,Zhuang Xie,Hongxiang Li,Qiuyan Cao,Zeliang Qiu,Yu Chen,Qiang Peng
标识
DOI:10.1002/adma.202419413
摘要
Rational regulation of Me-4PACz/perovskite interface has emerged as a significant challenge in the pursuit of highly efficient and stable perovskite solar cells (PSCs). Herein, an organometallic molecule of aluminum glycinate (AG) that contained amine (-NH2) and aluminum hydroxyl (Al-OH) groups is developed to tailor the buried interface and minimize interface-driven energy losses. The Al-OH groups selectively bonded with unanchored O═P-OH and bare NiO-OH to optimize the surface morphology and energy levels, while the -NH2 group interacted specifically with Pb2+ to retard perovskite crystallization, passivate buried Pb-related defects, and release residual interface stress. These interactions facilitate the interface carrier extraction and reduce interface-driven energy losses, thereby realizing a balanced charge carrier transport. Consequently, AG-modified narrow bandgap (1.55 eV) PSC demonstrates an efficiency of 26.74% (certified 26.21%) with a fill factor of 86.65%; AG-modified wide bandgap (1.785 eV) PSC realizes 20.71% champion efficiency with excellent repeatability. These PSCs maintain 91.37%, 91.92%, and 92.00% of their initial efficiency after aging in air atmosphere, the nitrogen-filled atmosphere at 85 °C, and continuously tracking at the maximum power-point under one-sun illumination (100 mW cm-2) for 1200 h, respectively.
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