SURFACE SENSITIVE PHOTOELECTROCHEMICAL IMAGING OF THE DERIVATIZED SURFACE OF TIO2 ON TI

An experimental method of examining surface heterogeneities of TiO2 films on polycrystalline Ti is presented. Sensitization of the surface with hexacyanoferrate enables the surface properties of the films to be studied photoelectrochemically at subbandgap wavelengths, thereby excluding a response fr...

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Veröffentlicht in:	Journal of the Electrochemical Society 1992-01, Vol.139 (1), p.L5-L6
Hauptverfasser:	MCMILLAN, CS, SMYRL, WH
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Electrochemistry Exact sciences and technology General and physical chemistry Materials Science Materials Science, Coatings & Films Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...) Physical Sciences Science & Technology Technology
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Zusammenfassung:	An experimental method of examining surface heterogeneities of TiO2 films on polycrystalline Ti is presented. Sensitization of the surface with hexacyanoferrate enables the surface properties of the films to be studied photoelectrochemically at subbandgap wavelengths, thereby excluding a response from the oxide interior. The combination of subbandgap photoelectrochemical microscopy of the derivatized surface with suprabandgap photoelectrochemical microscopy reveals significant surface recombination effects on the TiO2 thin films.
ISSN:	0013-4651 1945-7111
DOI:	10.1149/1.2069214