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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
Author(s) -
Kawakita Mamiko,
Uchikoshi Tetsuo,
Kawakita Jin,
Sakka Yoshio
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.02947.x
Subject(s) - electrophoretic deposition , materials science , electrophoresis , chemical engineering , indium tin oxide , analytical chemistry (journal) , thin film , nanotechnology , chemistry , coating , chromatography , engineering
Crystal‐oriented and crack‐free thin TiO 2 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 TiO 2 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 TiO 2 films were characterized by X‐ray diffraction and scanning electron microscopic analyses.