Photoluminescence of Rhodamine 6G-doped amorphous TiO2 thin films grown by sol–gel

Rhodamine 6G (Rh6G)-doped amorphous titanium thin films were prepared by the sol–gel technique. The films were grown at room temperature (RT) and supported on silica-glass substrates, which were previously chemically activated. Photoluminescence (PL) spectra were registered at RT by using as photo excitation the 325 nm He–Cd line. The PL versus the photon energy emission curves peak at around 3.2 eV, which open the possible application of this material for solid-state UV laser devices manufacturing.