钝化
钙钛矿(结构)
工作职能
偶极子
材料科学
电子
工作(物理)
能量转换效率
化学工程
化学物理
光电子学
纳米技术
化学
图层(电子)
物理
有机化学
热力学
工程类
量子力学
作者
Kuidong Gao,Lei Gao,Qiurui Wang,Yuan-Hao Chang,Qiang Zhang,Yuanyuan Zhao,Qunwei Tang
摘要
Severe nonradiative recombination and energy level mismatch in perovskite solar cells (PSCs) are key factors affecting efficiency. Here, we report an effective strategy for surface passivation and interfacial dipole engineering of perovskite films. By precisely introducing electron-withdrawing and electron-donating groups on 7-azaindole, we have effectively controlled the passivation ability of N atoms and the polarity of the interfacial dipole, thereby regulating the perovskite surface's work function and obtaining the optimal energy level matching. This strategy yields an impressive efficiency of 10.76% for the CsPbBr3 PSC and exceptional stability.
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