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HOSSEIN AKBARI1,* , YASHAR AZIZIAN-KALANDARAGH2,3
- Department of Physics Ardabil Branch, Islamic Azad University, Ardabil, Iran
- Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
- Department of Engineering Sciences, Sabalan University of Advanced Technologies(SUAT), Namin, Iran
CuO-PVA nanocomposite films were prepared successfully by sol-gel method with Cu(CH3COO)2.H2O as a precursor and Poly vinyl alcohol(PVA) in aqueous solution. The effect of annealing conditions such as annealing temperatu re and rate of annealing temperature, immersion cycle, and dip coating speed on the optical, film thickness, and particle size of CuO nanocomposite films has been studied by field emission scanning electron microscopy (FE-SEM), and UV-Visible spectroscopy techniques. According to the FE-SEM results, the sizes of the CuO nanostructures are below 20nm for annealing temperature of about 350 and 500°C. By analyzing the results obtained from the UV-Visible spectrum of the asprepared CuO nanocomposites a blue shift in band gap energy observed. The blue shift is due to the quantum confined charge carriers in very small nanometer-sized space..
CuO-PVA Nanocomposite, Sol-Gel Technique, Band Gap, Thin Film.
Submitted at: Sept. 6, 2017
Accepted at: April 5, 2018
HOSSEIN AKBARI, YASHAR AZIZIAN-KALANDARAGH, The role of annealing and synthesis conditions on the optical and morphological characteristics of CuO porous nanofilms, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 3-4, pp. 175-179 (2018)
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