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Proceedings Paper

Dye-sensitized solar cells based on ZnO nanorod arrays
Author(s): Yu Xie; Shaoyan Li; Ting Zhang; Prakash Joshi; Hao Fong; Mike Ropp; David Galipeau; Qiquan Qiao
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Paper Abstract

A series of dye-sensitized solar cells (DSSCs) were fabricated using ZnO nanorod arrays as the anode electrode. The ZnO nanorod arrays were grown on the fluorine doped tin dioxide (FTO) substrates by a hydrothermal method. The scanning electron microscopy (SEM) images indicated that the ZnO nanorod arrays were highly oriented on FTO substrates with an average diameter of ~40 nm and an average length of ~1 μm. After sensitized by Z-907 dye via impregnation in solution, ZnO nanorod arrays changed the color from white to pink. This indicated that the dye had been successfully attached to ZnO nanorods. The high-aspect-ratio (~25) ZnO nanorod arrays are expected to improve charge transport through the formation of continuous channels along the nanorods. We fabricated photovoltaic cells based on these ZnO nanorod arrays and found the deposition time and effective area were two important factors affecting short circuit current densities and cell efficiencies. The device performance (Voc = 0.48 V, Jsc = 5.39 mA/cm2, η = 0.73 %) showed a great potential for solar energy conversion.

Paper Details

Date Published: 25 September 2008
PDF: 8 pages
Proc. SPIE 7052, Organic Photovoltaics IX, 705213 (25 September 2008); doi: 10.1117/12.794078
Show Author Affiliations
Yu Xie, South Dakota State Univ. (United States)
Shaoyan Li, Beijing Jiaotong Univ. (China)
Ting Zhang, Beijing Jiaotong Univ. (China)
Prakash Joshi, South Dakota State Univ. (United States)
Hao Fong, South Dakota School of Mines and Technology (United States)
Mike Ropp, South Dakota State Univ. (United States)
David Galipeau, South Dakota State Univ. (United States)
Qiquan Qiao, South Dakota State Univ. (United States)


Published in SPIE Proceedings Vol. 7052:
Organic Photovoltaics IX
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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