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International Journal of Photoenergy
Volume 2011, Article ID 392832, 5 pages
Research Article

Nanocomposite Hole-Extraction Layers for Organic Solar Cells

1School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China
2College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China

Received 15 August 2010; Accepted 9 November 2010

Academic Editor: Mohamed Sabry Abdel-Mottaleb

Copyright © 2011 Jiao Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The influence of nanocomposite hole-extraction layers on the performance of organic photovoltaic (OPV) cells based on blends of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-61-buytyric acid methyl ester (PCBM) has been investigated. The hole-extraction layers consist of poly(3,4,-ethylene dioxythiophene) polystyrene sulfonic acid (PEDOT:PSS) doped with different concentrations of multiwall carbon nanotubes (MWCNTs). Compared with a pristine device (i.e., without MWCNTs), the MWCNTs-doped OPV cells shows an improved short-circuit current density, fill factor, and power conversion efficiency from 8.82 to 9.03 mA/cm2, 0.43 to 0.474, and 2.12% to 2.39% (i.e., by about 13%), respectively. Reasons for the improved performance of the devices are discussed. It shows that the reduction of series resistance of the devices might be correlated with the improvement of the OPV cells, performance achieved through the incorporation of MWCNTs into the hole-extraction layer of PEDOT:PSS.