Surface states generation during cathodic electrophoretic deposition of TiO2/ito films

Química Nova

Universidad Autónoma Metropolitana unidad Iztapalapa, México¹  Centro de Investigación y Estudios Avanzados del IPN, México, México¹  González, Ignacio¹  Vázquez, Gerardo¹  Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C., Querétaro, México¹  Manríquez, J.¹  Acevedo-Peña, Próspero¹ 

关键词: cathodic electrophoretic deposition;    surface states;    TiO2.;   

DOI  :  10.1590/S0100-40422011000300005

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown