High-Performance Solution-Processed Non-Fullerene Organic Solar Cells Based on Selenophene-Containing Perylene Bisimide Acceptor

• DOI: 10.1021/jacs.5b11149
• Publication Date: 2015-12-13T16:25:04Z
• Authors: Dong Meng; Dan Sun; Chengmei Zhong; Tao Liu; Bingbing Fan; Lijun Huo; Yan Li; Wei Jiang; Hyosung Choi; Taehyo Kim; Jin Young Kim; Yanming Sun; Zhaohui Wang; Alan J. Heeger
• Keywords: Photocurrent; Acceptor; Charge carrier

Non-fullerene acceptors have recently attracted tremendous interest because of their potential as alternatives to fullerene derivatives in bulk heterojunction organic solar cells. However, the power conversion efficiencies (PCEs) lagged far behind those polymer/fullerene system, mainly low fill factor (FF) and photocurrent. Here we report a novel perylene bisimide (PBI) acceptor, SdiPBI-Se, which selenium atoms were introduced into core. With well-established wide-band-gap polymer (PDBT-T1) donor, high efficiency 8.4% with an unprecedented FF 70.2% is achieved for solution-processed non-fullerene Efficient photon absorption, balanced charge carrier mobility, ultrafast generation processes PDBT-T1:SdiPBI-Se films account photovoltaic performance. Our results suggest that enormous rival or even surpass performance counterparts.