Titanium oxide films for solar energy capture

Our work to preparate thin mesoporous TiO2 films (800 – 3000 Å), doped to provide a shift in the optical response and capture sunlight, has progressed.

The films, prepared by a surfactant template route using evaporative induced self-assembly (EISA) have produced films which withstand hundreds of hours UV visible irradiation in saturated water vapour. During 2006, the collaboration identified the conditions required to form well-structured films reproducibly. Chemical control of the preparation has been consolidated and film structure characterization using X-rays and neutron reflectometry is essential. Using 99.75% (deuterium) heavy water, a strong hydrogen isotope effect has been observed as shown in the figure.