초록 |
Recently, significant progress has been made in all polymer solar cells (all-PSCs) by rational molecular design and optimized architecture. Especially, close stacking of conjugated polymer backbone has been an important issue for achieving good conducting pathways and charge transport property in bulk-heterojunction. Herein, a series of NDI-based polymers with controlled alkyl side chain was synthesized by Stille coupling reaction and investigated. As a result, electron mobility was increased due to the enhanced packing structure of polymer backbone. |