π-Conjugated Lewis Base: Efficient Trap-Passivation and Charge-Extraction for Hybrid Perovskite Solar Cells

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• 作者：Yuze Lin ; Liang Shen ; Jun Dai ; Yehao Deng ; Yang Wu ; Yang Bai ; Xiaopeng Zheng ; Jiayu Wang ; Yanjun Fang ; Haotong Wei ; Wei Ma ; Xiao Cheng Zeng ; Xiaowei Zhan and Jinsong Huang
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：29
• 期：7
• 全文大小：1627K
• ISSN：1521-4095

文摘

A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer, which combines efficient trap-passivation and electron-extraction. Perovskite solar cells with IDIC layers yield higher photovoltages and photocurrents, and 45% enhanced efficiency compared with control devices without IDIC.