No abstract

No abstract

No abstract

No abstract

We report the formation of sol-gel spin coated TiO2 films on corning glass substrates. The XRD spectra revealed the predominance of anatase phase in the films with annealing temperature from 250 to 450 C. The FE-SEM studies showed dense distribution of nanocrystallites in the deposited films. Elemental analysis by EDAX measurement also confirmed the formation of TiO2 films. Most interestingly, annealing at 250 to 450 C for 1 h in air produced a red shift in the absorption edge from 353 to 374 nm. This red shift was attributed to annealing-induced reduction in carrier confinement linked to enhancement in nanocrystallite sizes in the annealed films.