Resumen

ACEVEDO-PENA, Próspero; GONZALEZ, Ignacio; VAZQUEZ, Gerardo  y  MANRIQUEZ, J.. Surface states generation during cathodic electrophoretic deposition of TiO₂/ito films. Quím. Nova [online]. 2011, vol.34, n.3, pp. 390-396. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422011000300005.

In the present work TiO₂ films were formed over Indium Tin Oxide (ITO) employing cathodic electrophoretic deposition (Cathodic-EPD) and Dr. Blade Technique. The films were characterized by electrochemical techniques in order to compare their electronic properties; as well as, their photoelectrochemical behavior. The electrochemical performance showed by the films, allowed to relate the modification occurring during the Cathodic-EPD, with the partial reduction of TiO₂ nanoparticles, generating Ti³⁺ defects. These trapping states are modifying the electronic properties of the film, and diminishing the transport of the photoelectrogenerated electrons toward ITO.

Palabras llave : cathodic electrophoretic deposition; surface states; TiO₂.