Application of Two-Dimensional Conjugated Benzo[1,2-<i>b</i>:4,5-<i>b</i>′]dithiophene in Quinoxaline-Based Photovoltaic Polymers
作者:Ruomeng Duan、Long Ye、Xia Guo、Ye Huang、Peng Wang、Shaoqing Zhang、Jianping Zhang、Lijun Huo、Jianhui Hou
DOI:10.1021/ma300060z
日期:2012.4.10
designed and synthesized to investigate the influence of two-dimensional conjugated structure on photovoltaic properties of conjugated polymers. In these two polymers, PBDTDTQx-O was used as control material, which is an alternative copolymer based on a quinoxaline derivative (DTQx) and alkoxy-substituted benzo[1,2-b:4,5-b′]dithiophene (BDT-O) unit; PBDTDTQx-T has an identical conjugated backbone as PBDTDTQx-O
设计并合成了两种新的供体-受体(DA)替代共聚物PBDTDTQx-T和PBDTDTQx-O,以研究二维共轭结构对共轭聚合物光伏性能的影响。在这两种聚合物中,PBDTDTQx-O被用作控制材料,它是基于喹喔啉衍生物(DTQx)和烷氧基取代的苯并[1,2- b:4,5- b]的替代共聚物。′]二噻吩(BDT-O)单元;PBDTDTQx-T具有与PBDTDTQx-O相同的共轭主链,但是使用了一个简单的二维共轭BDT单元(BDT-T)代替了烷氧基BDT。通过TGA,紫外可见吸收,电化学循环伏安法,空间电荷限制电流(SCLC)模型的空穴迁移率以及光伏测量对聚合物进行了表征。已发现,与PBDTDTQx-O相比,PBDTDTQx-T表现出相似的分子能级和更高的空穴迁移率。基于PBDTDTQx-T的聚合物太阳能电池(PSC)的功率转换效率(PCE):[6,6]-苯基-C-71-丁酸甲酯(PC 71BM)=