3-Dimensional non-fullerene acceptors based on triptycene and perylene diimide for organic solar cells

Zhang, YM (Zhang, Yamin); Kan, B (Kan, Bin); Ke, X (Ke, Xin); Wang, YC (Wang, Yunchuang); Feng, HR (Feng, Huanran); Zhang, HT (Zhang, Hongtao); Li, CX (Li, Chenxi); Wan, XJ (Wan, Xiangjian); Chen, YS (Chen, Yongsheng)^[ 1 ]

ORGANIC ELECTRONICS, 2017, 50: 458-465

DOI: 10.1016/j.orgel.2017.07.021

 WOS:000411766800061

Abstract

Two molecules based on triptycene and perylene diimide (PDI) were designed and synthesized as nonfullerene acceptors for organic solar cells (OSCs). The bay-substituted and the imide-substituted molecules, named as TPBA and TPI, respectively, have rigid three-dimensional backbones, which improved the morphological compatibility with the donor polymers. TPBA and TPI exhibit suitable energy levels as acceptors and efficient absorption in the range of 450-600 nm. Their blended films with PTB7-Th displayed power conversion efficiencies of 2.80% and 3.64%, respectively. (C) 2017 Elsevier B.V. All rights reserved.