A new two-dimensional donor/acceptor copolymer based on 4,8-bis(2′-ethylhexylthiophene)thieno[2,3-f]benzofuran for high-performance polymer solar cells

被引：40

作者：

Fan, Ling ^{[1
]}

Cui, Ruili ^{[1
,2
]}

Guo, Xiuping ^{[1
]}

Qian, Dong ^{[1
]}

Qiu, Beibei ^{[1
]}

Yuan, Jun ^{[1
]}

Li, Yongfang ^{[2
]}

Huang, Wenlong ^{[3
]}

Yang, Junliang ^{[3
]}

Liu, Weifang ^{[1
]}

Xu, Xinjun ^{[4
]}

Li, Lidong ^{[4
]}

Zou, Yingping ^{[1
,2
,5
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, Sch Phys & Elect, Inst Super Microstruct & Ultrafast Proc Adv Mat, Changsha 410083, Hunan, Peoples R China

[3] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[4] Univ Sci & Technol, Sch Mat Sci & Engn, Beijing 100083, Beijing, Peoples R China

[5] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2014年 / 2卷 / 28期

关键词：

ENERGY-CONVERSION EFFICIENCY; LOW-BANDGAP POLYMERS; PHOTOVOLTAIC PROPERTIES; CONJUGATED POLYMERS; CHARGE-TRANSPORT; DESIGN RULES; DONORS; LEADS; UNITS;

D O I：

10.1039/c4tc00738g

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new alkylthienyl substituted thieno[2,3-f] benzofuran (TBF)-based polymer (PTBFTDTBT) was synthesized and characterized. PTBFTDTBT had a high molecular weight, good solubility in common organic solvents, broad visible absorption from 300 to 750 nm, and a relatively deep highest occupied molecular orbital level (-5.2 eV). PTBFTDTBT also showed a field hole mobility up to the order of 10(-2) using an organic field effect transistor (OFET) method and an order of 10(-2) using a space-charge-limited current (SCLC) method. With the structure of indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene): polystyrene sulfonate/PTBFTDTBT:PC71BM (1 : 2, w/w)/Ca/Al, a power conversion efficiency of 6.42% was obtained with a high short circuit current (J(sc)) of 13.51 mA cm(-2) and fill factor (FF) of 61%, under the illumination of AM1.5G, at 100 mW cm(-2), without any post-treatment. The study demonstrates that TBF is a promising building block for organic electronics.

引用

页码：5651 / 5659

页数：9

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