Nehru Institute of Technology, Coimbatore-641 105, India
Zinc oxide (ZnO) films were prepared by an alternative route to the sol-gel process and their structural and optic properties carefully investigated. The deposition of the films was carried out on glass substrates by using a dip-coating technique. Zinc acetate dihydrate was used as inorganic precursor. This compound was first dissolved in ethanol and nitric acid. The obtained solution was then mixed with a citric acid and ethylenglycol, which were previously dissolved. XRD pattern confirmed the hexagonal wurtzite structure of the synthesized material. Optical transmittance spectra showed absorption band at 3.3 eV. Scanning Electron Microscope (SEM) analysis showed excellent morphology of the samples with very flat surfaces.