Radiation-induced luminescence from TiO2 by 10-keV N+ ion irradiation

Radiation-induced luminescence (RIL) was generated using 10-keV N+ irradiation at room temperature to study energy transfer in TiO2 targets produced by sol–gel and direct-oxidation methods. The RIL spectra in the UV–visible region exhibited numerous atomic lines and three humps; they were deconvolved and proved to be visible bands at 617 and 479 nm from crystalline defects and a UV band at 320 nm from electron transitions between the Ti3+ 3d and O2− 2s states in the TiO2 crystal.