One-dimensional semiconductor materials have attracted significant research interest because of their unique properties for various technological applications. SnO2, as a wide band-gap semiconductor material is a promising photoanode material for dye-sensitized solar cells because of its fast electron mobility and suitable conduction band-edge position. Crystalline, ordered SnO2 nanorod arrays were successfully grown directly on a transparent conducting oxide using a hydrothermal approach. The fabrication procedure involved using an ordered ZnO nanowire array as a template and then converting it into SnO2 nanorod array via a liquid-phase conversion process. Large-scale growth of uniform nanorod arrays, with high orientation consistency, was achieved through this low temperature hydrothermal process. Furthermore, the performance of SnO2 nanorod arrays as photoanode in dye-sensitized solar cells was evaluated.
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