Synthesis and Photovoltaic Properties of the Copolymers Based on Carbazole with Tetrathiophene Porphyrin Side Chains Linked by a Flexible Alkyl-interval
Synthesis and Photovoltaic Properties of the Copolymers Based on Carbazole with Tetrathiophene Porphyrin Side Chains Linked by a Flexible Alkyl-interval
复制标题
四噻吩卟啉侧链柔性烷基咔唑共聚物的合成及光伏性能
DOI：
10.1002/cjoc.201700804
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发表时间：
2018
影响因子：
5.4
通讯作者：
Tan Songting
中科院分区：
文献类型：
--
作者：
Xiao Haibin;Deng Yanghua;Yuan Jingjun;Gao Ping;Zhao Bin;Tan Songting
设计并合成了四种基于二酮基吡咯并吡咯（DPP）和咔唑单元的共聚物（XP 10、XP 11、XP 12和XP 13），其中四噻吩卟啉（TTP）侧链通过柔性烷基间隔连接。系统研究了TTP的引入对共聚物的光学性能、电化学性能、形貌、迁移率和光伏性能的影响。结果表明，TTP/DPP比为2/8的XP 11具有最佳性能，即，宽吸收光谱、平衡的空穴/电子迁移率和合适的微相分离。通过溶液气相退火优化后，基于XP 11和PC 71 BM的有机太阳能电池器件显示出最佳的功率转换效率为5.11%，短路电流密度（Jsc）为10.36 mA·cm-2，开路电压（Voc）为0.77 V，填充因子（FF）为0.64。
Four copolymers (XP10, XP11, XP12 and XP13) based on diketopyrrolopyrrole (DPP) and carbazole units with tetrathiophene porphyrin (TTP) side chains linked by a flexible alkyl‐interval were designed and synthesized. The effects of the introduction of TTP on the optical and electrochemical properties, the morphology, the mobility and the photovoltaic performance of copolymers were systematically studied. The results revealed that XP11 with a TTP/DPP ratio of 2/8 possessed the best performances,i.e., broad absorption spectra, balanced hole/electron mobility and suitable microphase separation. After optimizing via solution vapor annealing, the organic solar cell devices based on XP11 and PC71BM showed the best power conversion efficiency of 5.11% with a short‐circuit current density (Jsc) of 10.36 mA·cm–2, an open‐circuit voltage (Voc) of 0.77 V, and a fill factor (FF) of 0.64.