Publication Details (including relevant citation information):
Submitted at The Annual Physics Conference of Iran 2013
In this experimental work, the sol-gel process accompanying dip-coating technique has been used in a sol comprising, zinc acetate dehydrate, isopropanol and diethanol amine as precursor, solvent and stabilizer, respectively for preparation of zinc oxide films on glass substrates. Before examining the physical properties, layers have been undergone an annealing process in order to increase their quality. In this project, a number of thin zinc oxide layers with optimized thicknesses have been prepared from a solution with a concentration of 1.15moles per liter by sol-gel technique and annealed at 500oC. Then, some structural parameters such as thickness, XRD pattern, grain size and SEM micrographs taken from the samples with different number of depositions have been measured and the obtained results have been compared. XRD analyses show that the produced films are polycrystalline and have nanocrystalline structure with grains having diameters in the range 35-43 nm. By increasing the number of depositions, grains become larger, more crystalline and less porous. SEM micrographs and XRD reveals that by increasing the number of depositions, crystallinity and periodicity of zinc oxide crystal lattice as well its grain sizes are increased.
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