A PTB7-based narrow band-gap conjugated polyelectrolyte as an efficient cathode interlayer in PTB7-based polymer solar cells.
Wenjun ZhangYaru LiLiping ZhuXiaohui LiuChangjian SongXiaodong LiXiaohua SunJunfeng FangPublished in: Chemical communications (Cambridge, England) (2018)
A PTB7-based cationic narrow band-gap polyelectrolyte, named PTB7-NBr, has been designed and synthesized as a cathode interfacial material for polymer solar cells. PTB7-NBr exhibits excellent cathode interfacial modification in solar cells with PTB7 and PTB7-Th as donor polymer and a high PCE of 9.24% was achieved.