Dithieno[3',2':3,4;2",3":5,6]benzo[1,2-c][1,2,5]oxadiazole-based polymer donors with deep HOMO levels

• 作者: Xiongfeng Li Jingui Xu Zuo Xiao Xingzhu Wang Bin Zhang Liming Ding
• 来源期刊: 半导体学报（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: SHORT COMMUNICATION
• 页码范围: 15-18
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/1674-4926/42/6/060501

摘要

Star nonfullerene acceptors like ITIC[1],IDIC[2],O-IDTBR[3],IT-4F[4],CO,8DFIC[5],Y6[6]etc.continuously emerge and keep pushing the power conversion efficiency(PCE)of organic sol-ar cells forward.These small molecules generally show nar-row bandgaps,excellent visible to NIR light-harvesting capabil-ity,good electron mobility,suitable energy levels and miscibil-ity with the donor materials.PCEs up to 18.56％have been achieved for the state-of-the-art nonfullerene organic solar cells[7].On the other hand,donor materials matching non-fullerene acceptors also received considerable interests[8].Ow-ing to complementary light absorption,high hole-mobility and deep HOMO levels,wide-bandgap(WBG)conjugated co-polymers are ideal donor partners for the low-bandgap non-fullerene acceptors.