Phase transformation in semi-transparent TiO2 films irradiated with CO2 laser

Anatase (TiO2) thin films were obtained by immersion of glass plates into a titanium sol-gel precursor followed by calcination at 450 degrees C for 3 h. The Raman results for the CO2 laser irradiated TiO2 films show that laser radiation is able to promote favorable changes of anatase phase in anatase/rutile mixtures. Nevertheless, the transformation process level depends on laser characteristics and scan speed of the radiation treatment. (C) 2011 Elsevier B.V. All rights reserved.