Donor-acceptor (donor) polymers with differently conjugated side groups at the acceptor units for photovoltaics
作者:Hongmei Qin、Lisheng Li、Tianxiang Liang、Xiaobin Peng、Junbiao Peng、Yong Cao
DOI:10.1002/pola.26526
日期:2013.4.1
Four new donor–acceptor (donor) [D–A(D)], PBDT‐PTQ, PBDT‐PTTQ, PBDT‐TQ, and PBDT‐TTQ, bearing the same backbone of alternative benzodithiophene (BDT) and quinoxaline units but with phenylene thienyl, phenylene di‐thienyl, thienyl and di‐thienyl groups (other donors), respectively, at the acceptor quinoxaline units, were designed and synthesized to investigate the impacts of the conjugated side chains
四个新的供体-受体(供体)[D-A(D)],PBDT-PTQ,PBDT-PTTQ,PBDT-TQ和PBDT-TTQ,带有相同的苯并二噻吩(BDT)和喹喔啉单元骨架,但带有亚苯基设计并合成了分别在受体喹喔啉单元上的噻吩基,亚苯基二噻吩基,噻吩基和二噻吩基基团(其他供体),以研究受体单元上共轭侧链对聚合物光伏性能的影响。基于PBDT-TQ:[6,6]-苯基-C-70-丁酸甲酯(PC70BM)和PBDT-PTQ:PC70BM的聚合物太阳能电池(PSC)的功率转换效率(PCE)达到4.39和比报道的具有相同主链的烷基苯基取代的聚合物分别高3.58%和43%,高17%。但是,基于PBDT-TTQ和PBDT-PTTQ的PCE,其中在PBDT-TQ和PBDT-PTQ的侧链分别添加了一个额外的噻吩。还讨论了共轭侧链如何影响PSC性能的机制。©2013 Wiley Periodicals,Inc. J Polym