Radiation-induced luminescence from TiO2 by 10, 20 and 30Â keV oxygen ion irradiations

Radiation-induced luminescence produced by 10, 20 and 30 keV oxygen ion irradiations at room temperature has been used to study photon emission from titanium dioxide (TiO2) targets. The targets were produced by the methods; sol-gel, direct oxidation, anodic oxidation and pulsed laser deposition. The atomic lines from titanium and oxygen, visible bands at 2.0 and 2.6 eV due crystalline defects, and a UV band at 3.9 eV from the direct transitions were observed in the UV-visible spectra. The energy dependences of the irradiation ion were not observed in the spectra. The bands were hardly affected at all by differences in the target. This study indicates the potential titanium dioxide as a radiocatalyst.