S.K. Sadrnezhaad - Materials Science and Engineering, Sharif University of Technology
M.R. Vaezi - Nanotechnology and Advanced Materials Department, Material and Energy Research Center(MERC)

Zinc oxide thin films were deposited on soda-lime glass substrates from an aqueous zinccontaining complex by two-stage chemical deposition (TSCD) method. Longmuir adsorption model showed that the adsorption of atoms on the surface of the substrate was typically physical. The relation between the fractional coverage, θ, with the equilibrium constant of the adsorption reaction was nonlinear indicating that the adsorption was non-ideal. The percentage of porosity, ۱-θ, of the thin layer was determined as a function of Zn۲+ concentration of the solution. By application of XRD technique, it was shown that pure crystalline ZnO of controllable thickness could be deposited by TSCD method on the surface of the substrate. The procedure consisted of immersion into (a) cold Zn۲+ complex containing solution and (b) hot water at ۹۰, ۹۵ and ۹۸°C.

Zinc oxide, Langmuir Adsorption, physisorption, Immersion, TSCD