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Preparation of Crystalline-Oriented Titania Photoelectrodes on ITO Glasses from a 2-Propanol–2,4-Pentanedione Solvent by Electrophoretic Deposition in a Strong Magnetic Field

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Crystal-oriented and crack-free thin TiO2 films with a good interfacial adhesion on indium–tin oxide glass substrates for photoelectrodes of dye-sensitized solar cells were fabricated by the constant voltage electrophoretic deposition (EPD) method in a strong magnetic field of 12 T generated by a superconducting magnet. A binder-free suspension for the EPD was prepared by dispersing TiO2 in a mixture of 2-propanol and 2,4-pentanedione (acetylacetone). The electrical conductivity, sedimentation rate, and the electrophoretic mobility were measured at varying ratios of the mixed solution. The optimized state of the suspension exhibiting the highest surface charge potential and producing deposits with the highest green density was obtained at the 50:50 mixing ratio. The TiO2 films were characterized by X-ray diffraction and scanning electron microscopic analyses.
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Document Type: Research Article

Affiliations: 1: Nano Ceramics Center, National Institute for Materials Science, Ibaraki 305-0047, Japan 2: Composites and Coatings Center, National Institute for Materials Science, Ibaraki 305-0047, Japan

Publication date: May 1, 2009

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