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Molecular Crystals and Liquid Crystals Volume 471, 2007 - Issue 1
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Organic Photovoltaics, Transistors, Light-Emitting Diodes and Other Devices

Improved Performance in Polymer-Fullerene Blend Photovoltaic Cells by Insertion of C60 Interlayer

Ryoji Maeda Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan
,
Katsuhiko Fujita Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan; Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka, JapanCorrespondence[email protected]
&
Tetsuo Tsutsui Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan; Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka, Japan
Pages 123-128 | Published online: 22 Sep 2010
 
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Abstract

We demonstrate the enhancement of the device performance in polymer:PCBM blend photovoltaic cells by insertion of C60 interlayer between the active layer and the upper electrode. The active layer was fabricated by spin coating of a polymer {(poly(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene)(MEH-PPV) or (poly(3-hexylthiopene)(P3HT) and fullerene derivative [5,6]-phenyl-C61-butyric acid methyl ester(PCBM)}, then the C60 interlayer and LiF/Al electrode were deposited. The both polymer cells with C60 interlayer showed significant increase in the power conversion efficiency compared to cells without the C60 layer.

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