Abstract
The preparation and study of supported TiO2 for photocatalytic application in solar cell devices is a relevant research field. Thin films of TiO2 prepared on Ti by thermal oxidation in a wide range of temperatures (450°C - 900°C) were characterized by electrochemical impedance spectroscopy, potentiometry and amperometry. This material presents photoelectrochemical activity, which depends dramatically of the oxidation temperature and the exposition time at the studied temperatures. The flatband potential as well as the donor density and the resistance to the charge transfer were measured. All these parameters are temperature dependent, and the optimal values are observed on the photoelectrodes prepared at 750°C. This result is consistent with the photochemical response reported in the literature for thin films of Ti/TiO2 prepared under similar conditions.
Highlights
Ti/TiO2 photoelectrode becomes one of the relevant materials in studies related to the application towards clean energy using the solar radiation [1]
We have found that the thermal treatment of the material leads to a larger photocurrent output when films are prepared at the temperature of 750 ̊C [5]
The film thickens of the SLC can be estimated by Equation (3), as proposed in the literature [12], assuming that the SLC is fully depleted at high anodic potentials, where the layer behaves as a capacitor
Summary
Ti/TiO2 photoelectrode becomes one of the relevant materials in studies related to the application towards clean energy using the solar radiation [1]. The photochemical activity of this material is dramatically dependent on the method applied in the construction of the photoelectrode. Different methods and material have been applied in the construction in this system looking for the best performance and reproducibility of this kind of photoelectrode [2]. How to cite this paper: Pedemonte, M.M. and Capparelli, A.L. (2015) Physicochemical Characterization of Photoelectrodes of Ti/TiO2 Prepared by Thermal Oxidation of Titanium.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
