A Novel Benzo[1,2-b:4,5-b′]dithiophene-Based Conjugated Polymer with a Pendant Diketopyrrolopyrrole Unit for High-Performance Solar Cells

被引：72
|
作者：
Tan, Hua [1 ]
Deng, Xianping [1 ]
Yu, Junting [1 ]
Zhao, Baofeng [2 ]
Wang, Yafei [1 ]
Liu, Yu [1 ]
Zhu, Weiguo [1 ]
Wu, Hongbin [2 ]
Cao, Yong [2 ]
机构：
[1] Xiangtan Univ, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Coll Chem, Xiangtan 411105, Peoples R China
[2] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
来源：
MACROMOLECULES | 2013年 / 46卷 / 01期
基金：
中国国家自然科学基金; 湖南省自然科学基金;
关键词：
PHOTOVOLTAIC PROPERTIES; SIDE-CHAIN; ACCEPTOR GROUPS; EFFICIENT; BANDGAP; COPOLYMERS; CARBAZOLE; DITHIENOTHIOPHENE; TRIPHENYLAMINE; THIOPHENE;
D O I：
10.1021/ma302243r
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A novel conjugated polymer of PBDT-TDPP-S was synthesized, which contains a donor unit of benzo[1,2-b:4,5-b']dithiophene in main chain and an acceptor unit of diketopyrrolopyrrole in side chain. This kind of side-chain donor-acceptor (D-A) polymer exhibited better solution processability, lower HOMO level (-5.34 eV), and more balanced carrier mobility relative to its corresponding main-chain D-A conjugated polymers. Using PBDT-TDPP-S as electron donor and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as electron acceptor, the resulting polymer solar cells exhibited outstanding photovoltaic properties with a power conversion efficiency of 4.89%, an open-circuit voltage of 0.84 V, a short-circuit current of 10.04 mA cm(-2), and a fill factor of 56.0%.
引用
收藏
页码：113 / 118
页数：6
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