Abstract
In this work, ZnO thin films were synthesized by sol–gel method on glass substrates followed by calcinations on different temperatures. The effect of annealing temperature on the structure and optical properties of the films was studied. The structural characteristics of the samples were analyzed by X-ray diffraction and atomic force microscope. The optical properties were studied by a UV-visible spectrophotometer. The results show that all the prepared ZnO thin films have a high preferential oriented c-axis orientation with compact hexagonal wurtzite structure. With the increasing annealing temperature (mse.ufl.edu), the intensity of (002) peak, particle size, surface RMS roughness, and absorbance of the ZnO thin films were increased as well. On the contrary, the transmittance and optical band gaps were decreased.
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