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

Quimica nova

Manríquez, J.¹  Vázquez, Gerardo²  González, Ignacio³  Acevedo-Peña, Próspero³ 

[1] Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C., Querétaro, México;Centro de Investigación y Estudios Avanzados del IPN, México, México;Universidad Autónoma Metropolitana unidad Iztapalapa, México

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 presentwork TiO2 films were formed over Indium Tin Oxide (ITO) employingcathodic electrophoretic deposition (Cathodic-EPD) and Dr. Blade Technique.The films were characterized by electrochemical techniques in order to comparetheir electronic properties; as well as, their photoelectrochemical behavior.The electrochemical performance showed by the films, allowed to relate the modificationoccurring during the Cathodic-EPD, with the partial reduction of TiO2nanoparticles, generating Ti3+ defects. These trapping states aremodifying the electronic properties of the film, and diminishing the transportof the photoelectrogenerated electrons toward ITO.

【 授权许可】

CC BY