Self-assembled perylene bisimide J-aggregates as promising cathode modifiers for highly efficient inverted polymer solar cells

Zengqi Xie; Biao Xiao; Zhicai He; Wenqiang Zhang; Xiaoyan Wu; Hongbin Wu; Frank Würthner; Chao Wang; Fangyan Xie; Linlin Liu; Yuguang Ma; Wai-Yeung Wong; Yong Cao

doi:10.1039/C5MH00056D

Self-assembled perylene bisimide J-aggregates as promising cathode modifiers for highly efficient inverted polymer solar cells†

Zengqi Xie,‡^a Biao Xiao,‡^a Zhicai He,‡^a Wenqiang Zhang,

^a Xiaoyan Wu,^a Hongbin Wu,*^a Frank Würthner,*^b Chao Wang,^c Fangyan Xie,^c Linlin Liu,^a Yuguang Ma,*^a Wai-Yeung Wong^d and Yong Cao^a

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* Corresponding authors

^a Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
E-mail: hbwu@scut.edu.cn, ygma@scut.edu.cn

^b Universität Würzburg, Institut für Organische Chemie & Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg, Germany
E-mail: wuerthner@chemie.uni-wuerzburg.de

^c Instrumental Analysis and Research Center, Sun Yat-Sen University, Guangzhou 510275, P. R. China

^d Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China

Abstract

Solvent-dependent self-assemblies of perylene bisimide (PBI) are applied as cathode modification layers in inverted polymer solar cells (i-PSCs) to afford a power conversion efficiency (PCE) as high as 9.11%. The very high device performance clearly indicates that n-type perylene bisimide based supramolecular assemblies are most promising interfacial materials for highly efficient i-PSCs.

Materials Horizons

Self-assembled perylene bisimide J-aggregates as promising cathode modifiers for highly efficient inverted polymer solar cells†

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Self-assembled perylene bisimide J-aggregates as promising cathode modifiers for highly efficient inverted polymer solar cells

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