Composition and properties of RF-sputter deposited titanium dioxide thin films.

The photocatalytic properties of titania (TiO ₂ ) have prompted research utilising its useful ability to convert solar energy into electron-hole pairs to drive novel chemistry. The aim of the present work is to examine the properties required for a synthetic method capable of producing thin TiO ₂ films, with well defined, easily modifiable characteristics. Presented here is a method of synthesis of TiO ₂ nanoparticulate thin films generated using RF plasma capable of homogenous depositions with known elemental composition and modifiable properties at a far lower cost than single-crystal TiO ₂ . Multiple depositions regimes were examined for their effect on overall chemical composition and to minimise the unwanted contaminant, carbon, from the final film. The resulting TiO ₂ films can be easily modified through heating to further induce defects and change the electronic structure, crystallinity, surface morphology and roughness of the deposited thin film.
Competing Interests: There are no conflicts to declare.
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