Synthesis and photovoltaic properties of conjugated side chains polymers with different electron-withdrawing and donating end groups

被引：20

作者：

Gu, Zhaojie ^{[1
,2
]}

Deng, Lijun ^{[1
,2
]}

Luo, Hao ^{[3
]}

Guo, Xia ^{[3
]}

Li, Haohao ^{[1
,2
]}

Cao, Zhencai ^{[1
,2
]}

Liu, Xunshan ^{[1
,2
]}

Li, Xinwei ^{[1
,2
]}

Huang, Hongyan ^{[1
,2
]}

Tan, Yingzi ^{[1
,2
]}

Pei, Yong ^{[1
,2
]}

Tan, Songting ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Coll Chem, Key Lab Environmentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Key Lab Polymer Mat & Applicat Technol Hunan Prov, Xiangtan 411105, Peoples R China

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

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2012年 / 50卷 / 18期

基金：

高等学校博士学科点专项科研基金;

关键词：

conjugated polymers; end groups; functionalization of polymers; low band gap; photovoltaic properties; polymer solar cells; side chain; synthesis; HETEROJUNCTION SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; ACCEPTOR GROUPS SYNTHESIS; SEMICONDUCTING POLYMERS; COPOLYMERS; TRIPHENYLAMINE; BANDGAP; EFFICIENCIES; CARBAZOLE; FLUORENE;

D O I：

10.1002/pola.26180

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 series of novel low band gap polymers containing conjugated side chains with 4,7-dithien-5-yl-2,1,3-benzodiathiazole and different electron-withdrawing end groups of aldehyde (PT-DTBTCHO), 2-ethylhexyl cyanoacetate (PT-DTBTCN), 1,3-diethyl-2-thiobarbituric acid (PT-DTBTDT), and electron-donating end group of 2-methylthiophene (PT-DTBTMT) have been designed and synthesized. All polymers exhibit good solubility in common organic solvents, film-forming ability, and thermal stability. These conjugated polymers show the broad ultraviolet-visible absorption and the narrow optical band gaps in the range of 1.651.90 eV. Through changing the end group of conjugated side chains, the photophysical properties and energy levels of the polymers were tuned effectively. Bulk heterojunction solar cells based on the blend of these polymers and (6,6)-phenyl-C61-butyric acid methyl ester (PC61BM) reached the best power conversion efficiency (PCE) of 2.72%. (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012

引用

页码：3848 / 3858

页数：11

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