Improved High-Efficiency Organic Solar Cells via Incorporation of a Conjugated Polyelectrolyte Interlayer

被引：535

作者：

Seo, Jung Hwa ^{[1
,2
]}

Gutacker, Andrea ^{[3
]}

Sun, Yanming ^{[1
,2
]}

Wu, Hongbin ^{[4
]}

Huang, Fei ^{[4
]}

Cao, Yong ^{[4
]}

Scherf, Ullrich ^{[3
]}

Heeger, Alan J. ^{[1
,2
]}

Bazan, Guillermo C. ^{[1
,2
]}

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

[3] Berg Univ Wuppertal, D-42097 Wuppertal, Germany

[4] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 22期

基金：

美国国家科学基金会;

关键词：

POLYMER PHOTOVOLTAIC CELLS; ELECTRON INJECTION; BLOCK-COPOLYMERS; PERFORMANCE; FULLERENE; MORPHOLOGY; SOLVENT;

D O I：

10.1021/ja2037673

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The power conversion efficiencies of bulk heterojunction (BHJ) solar cells can be increased from 5 to 6.5% by incorporating an ultrathin conjugated polyelectrolyte (CPE) layer between the active layer and the metal cathode. Poly [N-9 ''-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl C-71 butyric acid methyl ester (PC71BM) were chosen for the photoactive layer. CPEs with cationic polythiophenes, in both homopolymer and block copolymer configurations, were used to improve the electronic characteristics. The significant improvement in device performance and the simplicity of fabrication by solution processing suggest a promising and practical pathway for improving polymer solar cells with high efficiencies.

引用

页码：8416 / 8419

页数：4

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