TiO 2 thin films were prepared on electrochemically etched porous Si by anodic oxidative hydrolysis of TiCl 3 for the purpose of solar cell application. We compared electrochemical and photoelectrochemical properties of the TiO 2-deposited porous Si electrodes (TiO 2/porous Si) with those of a porous Si electrode. The TiO 2/porous Si showed prolonged stability of photoluminescence and enhancements of photovoltage and photocurrent by 0.13 V and 67% increase, respectively, in comparison with porous Si due to the reduction of surface traps for charge carriers in the presence of TiO 2 thin layer. Li + and Na + ions exhibited intercalation and deintercalation through the electrodeposited TiO 2 film.
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films