Affiliations: Mechanical Department, Faculty of Technology, University of Biskra, Biskra, Algeria | VTRS Laboratory, Institute of Technology, University of El-Oued, El-Oued, Algeria | Laboratoire de Physique des Couches Minces et Application, University of Biskra, Biskra, Algeria | Material Sciences Department, Faculty of Science, University of Biskra, Biskra, Algeria
Note:  Corresponding author: Yacine Aoun, Mechanical Department, Faculty of Technology, University of Biskra, Biskra 07000, Algeria. E-mail: email@example.com
Abstract: Zinc oxide (ZnO) thin films were deposited on glass substrates by spray pyrolysis technique by decomposition of zinc acetate dihydrate in ethanol. The ZnO thin films were deposited at 350°C and annealed at 500°C for 2 h. The substrate was R217102 glass in a size of 30 cm × 7.5 cm × 0.1 cm. The films exhibited a hexagonal wurtzite structure with a strong (002) preferred orientation. The higher value of crystallite size (20.29 nm) was attained with films annealed at 500°C, probably due to improvement of the crystallinity of the films with heating. The average transmittance of the films, by UV-Vis, was over of 95 %. The band gap energy varied from 3.279 to 3.288 eV for the non-annealed and annealed films, respectively. The electrical resistivity was measured to be 0.4 Ω.cm.