Abstract:

Zinc oxide thin films were synthesized on  glass substrates by means of sol\|gel method.The X\|ray diffraction (XRD) results show  that the grain size increased with the increasing of annealing temperature, which was confirmed by the morphology by atomic force microscopy (AFM). The   UV\|Vis results show  that there is a stronger absorption on the near band edge of zinc oxide and the  bandgap of the film at 600 ℃ by means of annealing treatment is 3.23 eV. Room\|temperature photoluminescence (PL) results show that all films  show UV emission peak at  386.5 nm, the deep level emission is restrained by the increase of annealing temperature.

Key words: sol-gel method, zinc oxide thin film, optical property