| 초록 |
Organic photovoltaic cells(OPVs) have attracted much attention due to its potential applications such as low cost, low weight, and capability to be fabricated into flexible large area devices by solution process.Bulk heterojunction(BHJ) organic photovoltaic formed from a blend of π-conjugated polymeric electron-donor(D) and fullerene derivative electron acceptor(A). This structure is considered as an ideal structure for OPVs, because the BHJ blend can improved photovoltaic performance.Quinacridone, which is known as electron donor, has a high crystallinity, self-assembled characteristics and high hole mobility. Benzothiadiazoleis thought to be a acceptor unit since it has a strong electron-withdrawing character. In this work, we synthesized and characterized D-A polymers by Suzuki coupling reaction with different π-bridge units.We investigated the correlation among the backbone conformations of the polymers and physical, optical, electrochemical, photovoltaic properties. |
