Solution processable bulk-heterojunction solar cells using a small molecule acceptor

被引：105

作者：

Ooi, Zi En ^{[1
,2
,3
]}

Tam, Teck Lip ^{[1
,2
]}

Shin, Richard Yee Cheong ^{[1
,2
]}

Chen, Zhi Kuan ^{[1
,2
]}

Kietzke, Thomas ^{[1
,2
,4
]}

Sellinger, Alan ^{[1
,2
,5
]}

Baumgarten, Martin ^{[6
]}

Mullen, Klaus ^{[6
]}

deMello, John C. ^{[3
]}

机构：

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

[2] ASTAR, Singapore 117602, Singapore

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England

[4] Merck KgaA, D-64293 Darmstadt, Germany

[5] Stanford Univ, CAMP, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[6] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2008年 / 18卷 / 39期

关键词：

D O I：

10.1039/b813786m

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report a small-molecule electron-acceptor based on 2-vinyl-4,5-dicyanoimidazole [Vinazene(TM)] for use in solution processed organic solar cells. The material has a favourably located LUMO level of -3.6 eV and absorbs strongly in the visible spectrum up to 520 nm attractive properties compared to the widely used acceptor (6,6)phenyl-C-60-butyric acid methyl ester (PCBM). The Vinazene derivative was blended with a poly(2,7-carbazole) donor-chosen for its complementary absorption range and comparatively high-lying HOMO level of -5.6 eV-and incorporated into bulk hetero-junction devices. The influence of the donor/acceptor composition and annealing temperature on device performance were then investigated. The best performing devices exhibited reasonable power conversion efficiencies of 0.75% and open-circuit voltages of more than 1.3 V, substantially higher than previously reported devices using small molecule acceptors.

引用

页码：4619 / 4622

页数：4

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