Surface termination passivation of imidazole-based diiodide enabling efficient inverted perovskite solar cells.

Yu Wang,Jiaxing Song,Jingchuan Ye,Yingzhi Jin,Xinxing Yin,Zhen Su,Lin Hu,Yan Wu,Chufeng Qiu,Hao Wang,Wensheng Yan,Zaifang Li

Chemical communications (Cambridge, England)（2023）

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Abstract

-(3-aminopropyl)-imidazole diiodide (APDI) was introduced on the upper surface of the perovskite for the first time to modulate the terminal groups. The defect traps were suppressed by binding N cations from the APDI with Pb. Consequently, the optimum APDI-treated device achieved a PCE of 21.41% and exhibited excellent stability.

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Key words

perovskite solar cells,surface termination passivation,solar cells,imidazole-based

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