A Novel Thiophene Derivative-based Conjugated Polymer for Polymer Solar Cells with High Open-circuit Voltage

被引：21

作者：

Chen Lie ^{[1
,2
]}

Shen Xingxing ^{[1
]}

Chen Yiwang ^{[1
,2
]}

机构：

[1] Nanchang Univ, Dept Chem, Inst Polymers, Nanchang 330031, Jiangxi, Peoples R China

[2] Nanchang Univ, Jiangxi Key Lab New Energy Chem, Nanchang 330031, Jiangxi, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2012年 / 30卷 / 09期

基金：

中国国家自然科学基金;

关键词：

conjugated polymers; HOMO energy level; polymer solar cells; open-circuit voltage; PERFORMANCE; BISADDUCT; ACCEPTOR; COPOLYMER; BANDGAP; LEVEL;

D O I：

10.1002/cjoc.201200471

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel D-A alternative conjugated polymer PBDTDMCT containing benzo[1,2-b:4,5-b']dithiophene (BDT) and dimethyl thiophene-3,4-dicarboxylate (DMCT), was designed and synthesized by Stille cross-coupling reaction. The copolymer exhibited excellent solubility and good thermal stability. The optical band gap determined from the onset of absorption of the polymer film was 2.10 eV. By incorporation of the ester groups into the polymer side chain, the HOMO level of polymer PBDTDMT was tuned to be deep-lying (-5.65 eV). Open-circuit voltage of polymer solar cells constructed based on PBDTDMT and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) can be tuned to achieve values as high as ca. 1.0 V.

引用

页码：2219 / 2224

页数：6

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