接受者
红外线的
有机太阳能电池
材料科学
戒指(化学)
能量转换效率
终端(电信)
吸收(声学)
富勒烯
带隙
聚合物
化学
光电子学
光学
有机化学
电信
计算机科学
物理
复合材料
凝聚态物理
作者
Xueyan Ding,Xianjie Chen,Yingying Xu,Zhigang Ni,He Tian,Huayu Qiu,Chang‐Zhi Li,Qian Zhang
标识
DOI:10.1016/j.cej.2021.132298
摘要
Unfused acceptors have attracted considerable attention due to their simple synthesis and low cost compared to their fused-ring counterparts. Herein, a simple fully unfused acceptor 2T2Se-F, with selenophene to link 2,6-di(hexyloxy)phenyl substituted bithiophene and the terminal groups of fluorinated 1,1-dicyanomethylene-3-indanone (DFIC), was designed and synthesized. The single crystal structure of 2T2Se-F indicates that the collaborated π−π interactions from H-aggregations of molecular backbones and J-aggregations of terminal groups and terminal groups/selenophenyl rings form an ordered three-dimensional interpenetrating network. 2T2Se-F film displays near-infrared absorption with a low bandgap of 1.44 eV. After blending with the polymeric donor PM6, an impressive power conversion efficiency (PCE) of 12.17% was obtained with a high short-circuit current density of 20.63 mA cm−2 and a fill factor of 0.669, which is among the highest values for organic solar cells based on fully unfused non-fullerene acceptors so far.
科研通智能强力驱动
Strongly Powered by AbleSci AI