Characterizations of tungsten carbide as a non-Pt counter electrode in dye-sensitized solar cells

초록

Tungsten carbide particles as a counter electrode for dye-sensitized solar cells are prepared by heating layered tungsten oxides at 700, 800, and 900 degrees C. In particular, the sample heated at 800 degrees C reveals dominant WC structure and relatively high specific surface area. The improved photoelectrochemical properties of the sample prepared at 800 degrees C may be due to both catalytic activity of WC phase and high active sites for iodide reduction in comparison with other electrodes. (C) 2011 Elsevier B.V. All rights reserved.

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