Effect of annealing on the characteristics of organic solar cells: Polymer blends with a 2-vinyl-4,5-dicyanoimidazole derivative

被引：56

作者：

Kietzke, Thomas

Shin, Richard Yee Cheong

Egbe, Daniel Ayuk Mbi

Chen, Zhi-Kuan

Sellinger, Alan

机构：

[1] Inst Mat Res & Engn, Singapore 117602, Singapore

[2] Univ Jena, Inst Organ Chem & Macromol Chem, D-07743 Jena, Germany

来源：

MACROMOLECULES | 2007年 / 40卷 / 13期

关键词：

D O I：

10.1021/ma0706273

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Photovoltaic cells based on blends of either regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) or a poly(phenylenevinylene) (A-PPE-PPV) derivative as electron donors with a novel electron acceptor based on 2-vinyl-4,5-dicyanoimidazole (Vinazene) have been investigated in detail. We found a strong influence of annealing conditions on the thin-film nanostructure and device performance. By adjusting the material combinations, external quantum efficiencies between 12 and 15% and energy conversion efficiencies of 0.5% could be reached. Though comparable efficiencies with both donor polymers could be obtained with the Vinazene derivative as acceptor, we found strong indications that different mechanisms are limiting the device efficiency.

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收藏

页码：4424 / 4428

页数：5

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