| 초록 |
Bulk heterojunction(BHJ) polymer solar cells have been significantly studied as low cost, low weight, and capability to be fabricated into flexible large area devices by solution process. Recently, two-dimensional(2D) conjugated polymers with conjugated side chains has always been the primary interest of academia. This type of polymers feature high hole mobility benefiting from the overlapping of the conjugated side chain interactions with the conjugated main chains. Also, the extended 2D-conjugated polymers could enhance the miscibility with fullerene acceptors in BHJ device fabrication. Quinoxaline is thought to be a acceptor unit due to the electron withdrawing properties of the two imine nitrogen atoms. In this work, we synthesized and characterized D-A polymers with different conjugated side chains by Suzuki coupling reaction. We investigated the physical, optical, electrochemical and photovoltaic properties. |
