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International Journal of Photoenergy
Volume 2010, Article ID 585621, 7 pages
http://dx.doi.org/10.1155/2010/585621
Research Article

Fabrication of Dye-Sensitized Solar Cells with a 3D Nanostructured Electrode

1Department of Mechanical Engineering, National Chung-Hisng University, Taichung 402, Taiwan
2Department of Physics, National Chung-Hisng University, Taichung 402, Taiwan
3Institute of Biomedical Engineering, National Chung-Hisng University, Taichung 402, Taiwan

Received 25 November 2009; Accepted 18 February 2010

Academic Editor: Leonardo Palmisano

Copyright © 2010 Guo-Yang Chen 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.

Abstract

A novel Dye-Sensitized Solar Cell (DSSC) scheme for better solar conversion efficiency is proposed. The distinctive characteristic of this novel scheme is that the conventional thin film electrode is replaced by a 3D nanostructured indium tin oxide (ITO) electrode, which was fabricated using RF magnetron sputtering with an anodic aluminum oxide (AAO) template. The template was prepared by immersing the barrier-layer side of an AAO film into a 30 wt% phosphoric acid solution to produce a contrasting surface. RF magnetron sputtering was then used to deposit a 3D nanostructured ITO thin film on the template. The crystallinity and conductivity of the 3D ITO films were further enhanced by annealing. Titanium dioxide nanoparticles were electrophoretically deposited on the 3D ITO film after which the proposed DSSC was formed by filling vacant spaces in the 3D nanostructured ITO electrode with dye. The measured solar conversion efficiency of the device was 0.125%. It presents a 5-fold improvement over that of conventional spin-coated TiO2 film electrode DSSCs.