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KMID : 1059519980420010042
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Journal of the Korean Chemical Society
1998 Volume.42 No. 1 p.42 ~ p.50
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Photoelectrochemical Properties of TiO2-Phthalocyanine Thin Film System(II)
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Jin E.
Kim Y.-S.
Fujishima Akira
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Abstract
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Titanium dioxide (TiO2) thin film samples were prepared by using spray pyrolysis methodology and were characterized by using X-ray photoelectron spectroscopy and X-ray diffraction analysis. It was found that anatase prepared by the hydrolysis of titanium(Ⅳ) oxyacetylacetonate exhibited the largest specific surface area. The particle size increased with increasing temperature, while the thickness decreased. Titanium dioxide (TiO2) in the anatase form was prepared at 400 ℃ and thephotoconductivity was determined using photocurrent measurements. Photoelectrochemical properties of the TiO2-phthalocyanine system were measured in a three-electrode system. The photocurrent action spectrum in the visible region coincided with intrinsic absorption spectrum of phthalocyanine. The crystal structure of phthalocyanine is considered to be a very important property in the photogeneration phenomena.
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