versión impresa ISSN 0100-4042
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.