9-Alkylidene-9H-Fluorene-Containing Polymer for High-Efficiency Polymer Solar Cells

被引：93

作者：

Du, Chun ^{[2
]}

Li, Cuihong ^{[1
,3
]}

Li, Weiwei ^{[2
]}

Chen, Xiong ^{[2
]}

Bo, Zhishan ^{[1
,2
]}

Veit, Clemens ^{[4
]}

Ma, Zaifei ^{[3
]}

Wuerfel, Uli ^{[4
]}

Zhu, Hongfei ^{[2
]}

Hu, Wenping ^{[2
]}

Zhang, Fengling ^{[3
]}

机构：

[1] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[3] Linkoping Univ, Dept Phys Chem & Biol, SE-58183 Linkoping, Sweden

[4] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany

来源：

MACROMOLECULES | 2011年 / 44卷 / 19期

基金：

瑞典研究理事会;

关键词：

OPEN-CIRCUIT VOLTAGE; PERFORMANCE; PHOTOVOLTAICS; DESIGN;

D O I：

10.1021/ma201477b

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 donor-acceptor copolymer containing 9-alkylidene-9H-fluorene unit in the main chain, poly[9-(1'-hexylheptylidene)-2,7-fluorene-alt-5, 5-(4',7'-di-2-thienyl-5',6'-dialkoxy-2',1',3'-benzothiadiazole)] (PAFDTBT), has been synthesized and evaluated in bulk heterojunction polymer solar cells (BHJ PSCs). The polymer possesses a low band gap of 1.84 eV, a low-lying HOMO energy level (5.32 eV), and excellent solubility in common organic solvents. PSCs based on PAFDTBT and (6,6)-phenyl-C-71-butyric add methyl ester (PC71BM) demonstrate a power conversion efficiency (PCE) of 6.2% with a high fill factor (FF) of 0.70, which indicates that 9-alkylidene-9H-fluorene can be a very useful building block for constructing narrow band gap conjugated polymers for high-efficiency BHJ PSCs.

引用

页码：7617 / 7624

页数：8

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