PREPARATION AND ELECTROCHEMICAL-BEHAVIOR OF SOME METAL-OXIDE FILMS

Antimony, tin and titanium oxides are very attractive materials for spectroscopic studies, solar energy applications and other industrial purposes. In this work oxide films of these metals were prepared on glass, glassy carbon or platinum using a combined chemical vapor deposition-spraying technique. The variation in the physical properties of the film with its thickness and preparation parameters was studied. The electrochemical properties of the prepared electrodes were studied in different redox systems. The charge transfer reaction between the oxide film electrode and the redox electrolyte seems to occur via electron tunnelling through the barrier formed by the space charge layer of the semiconducting oxide.