| 초록 |
Fullerene-based acceptors such as PC61BM and PC71BM have been used in the field of organic photovoltaics (OPV) despite of some significant limitations. As an alternative way to solve the limitations, much attention has been focused on the developing the non-fullerene acceptors. Here we report novel benzothiadiazole-based linear rod-like non-fullerene electron acceptors based on a symmetric acceptor-donor–acceptor-donor-acceptor (A2–D–A1–D–A2) structure, which is comprised benzothiadiazole central acceptor unit (A1)-based core flanked by a donor (D) unit and a terminal acceptor unit (A2), mainly attached via a vinyl linkage. We will be presenting structure-performance relationship studies of benzothiadiazole-based non-fullerene electron acceptors. Moreover, this study will give out the benefits of easily synthesized small molecules with a simple structure, which have greater potential for industrial application than high-efficiency molecules with a complex synthesis. |
