Dual Interfacial Design for Efficient CsPbI2Br Perovskite Solar Cells with Improved Photostability

• Published in: Advanced materials (Weinheim) Vol. 31; no. 23
• Main Authors: Tian, Jingjing, Xue, Qifan, Tang, Xiaofeng, Chen, Yuxuan, Li, Ning, Hu, Zhicheng, Shi, Tingting, Wang, Xin, Huang, Fei, Brabec, Christoph J., Yip, Hin‐Lap, Cao, Yong
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 06.06.2019
• Subjects: all‐inorganic perovskite solar cells; Anodes; Cathodes; Dipoles; Grain size; high efficiency; interface modification; Interlayers; Materials science; Molecular orbitals; Perovskites; photoinduced halide segregation; Photovoltaic cells; Polymers; Solar cells; surface passivation; Tin dioxide; Wetting

A synergic interface design is demonstrated for photostable inorganic mixed‐halide perovskite solar cells (PVSCs) by applying an amino‐functionalized polymer (PN4N) as cathode interlayer and a dopant‐free hole‐transporting polymer poly[5,5′‐bis(2‐butyloctyl)‐(2,2′‐bithiophene)‐4,4′‐dicarboxylate‐alt...