[1]谭 华,谭弘毅,于俊婷,等.新型苯并二噻吩类聚合物供体材料合成及其光伏性能研究[J].常州大学学报(自然科学版),2021,33(05):35-42.[doi:10.3969/j.issn.2095-0411.2021.05.005]
　TAN Hua,TAN Hongyi,YU Junting,et al.Synthesis and Photovoltaic Properties of Novel Benzodithiophene-Based Polymeric Donor Materials[J].Journal of Changzhou University(Natural Science Edition),2021,33(05):35-42.[doi:10.3969/j.issn.2095-0411.2021.05.005]
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新型苯并二噻吩类聚合物供体材料合成及其光伏性能研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第33卷
期数:
2021年05期
页码:
35-42
栏目:
材料科学与工程
出版日期:
2021-09-28

文章信息/Info

Title:
Synthesis and Photovoltaic Properties of Novel Benzodithiophene-Based Polymeric Donor Materials
文章编号:
2095-0411(2021)05-0035-08
作者:
谭 华1; 2;  谭弘毅2;  于俊婷1;  郑祥均1;  朱卫国1
(1. 常州大学 材料科学与工程学院, 江苏 常州 213164; 2. 湘潭大学 化学学院, 湖南 湘潭 411105)
Author(s):
TAN Hua1; 2;  TAN Hongyi2;  YU Junting1;  ZHENG Xiangjun1;  ZHU Weiguo1
(1. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; 2. College of Chemistry, Xiangtan University, Xiangtan 411105, China)
关键词:
有机太阳能电池;  聚合物供体材料;  苯并二噻吩;  氟取代噻吩[3; 4-b]噻吩单元
Keywords:
organic solar cells;  polymer donor materials;  benzodithiophene;  fluoro-substituted thiophene[3; 4-b]thiophene
分类号:
O 472; O 626.12
DOI:
10.3969/j.issn.2095-0411.2021.05.005
文献标志码:
A
摘要:
以刚性平面结构的苯并二噻吩(BDT)为给电子单元和具有稳定醌类结构的氟(F)取代噻吩[3,4-b]噻吩单元(TT)为受电子单元设计合成了两种窄带隙的聚合物供体材料。系统研究了侧链取代单元结构对聚合物供体材料光物理性能, 电化学性能, 活性层形貌和光伏性能影响。研究表明: 相对于基于6-取代苯并噻吩侧链的聚合物供体材料PBDTBTs-TT, 2-取代苯并噻吩侧链的聚合物供体材料PBDTTBs-TT具有更宽的光子捕获范围和更强的吸光能力, 这有利于提高光伏器件的短路电流。以IT-4F为受体材料, 基于PBDTBTs-TT: IT-4F的光伏器件能量转换效率和短路电流分别为6.43%和14.21 mA·cm-2; 而基于PBDTTBs-TT: IT-4F的光伏器件能量转换效率和短路电流提高到了7.06%和15.32 mA·cm-2。
Abstract:
Two kinds of polymer donor materials based on the rigid and planar benzodithiophene units and fluoro-substituted thiophene[3,4-b]thiophene units were designed and synthesized. The photophysical and electrochemical properties, morphology of active layers, and photovoltaic properties of two polymer donor materials were systematically studied. Compared to PBDTBTs-TT(with 6-position of benzothiophene substituent), PBDTTBs-TT(with 2-position of benzothiophene substituent)exhibited an enhanced photon capture capabilities, thereby increasing the short-circuit current of the devices. With IT-4F as the acceptor material, the energy conversion efficiency and short-circuit current can be improved from 6.43% and 14.21 mA/cm2 for PBDTBTs-TT:IT-4F to 7.06% and 15.32 mA/cm2for PBDTTBs-TT:IT-4F, respectively.

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备注/Memo

备注/Memo:
收稿日期:2021-05-26。基金项目:国家自然科学基金资助项目(51403178, 51573154)。作者简介:谭华(1984—), 男, 湖南衡阳人, 博士, 副教授。通信联系人: 朱卫国(1964—), E-mail: zhuwg18@126.com
更新日期/Last Update: 1900-01-01