Analysing the Color Properties of Sol-gel Prepared Copper Oxide Thin Films
Abstract
This research presented a study of the effect of annealing time at temperatures400 and 500°C on the Color properties of copper oxide films prepared using the sol-gel technique, and tests were conducted on them XRD, UV-visible and hall effect. .X-ray diffraction patterns showed the CuO, and the material was well crystalline. Visual tests showed that the transmittance was 85% at 500° C in the visible region. Color values were observed using the CIELAB colorimetric method, and two important color characteristics were measured: the color angle, which ranged between (25.54°-27.29°) and Chrome which was between (72.09 -74.15). The results of electrical measurements confirmed that the conductivity of the thin films increases with increasing annealing temperatures and that all thin films are of the p-type.
Downloads
References
L. Filipponi and D. Sutherland, “Nanotechnologies: principles, applications, implications and hands-on activities,” Publ. Off. Eur. Union, Luxemb., 2013.
M. Yuksel, J. R. Pennings, F. Bayansal, and J. T. W. Yeow, “Effect of B-doping on the morphological, structural and optical properties of SILAR deposited CuO films,” Phys. B Condens. Matter, vol. 599, p. 412578, 2020.
A. Jogi. Ayana, and B. V. Rajendra, “Modulation of optical and photoluminescence properties of ZnO thin films by Mg dopant,” J. Mater. Sci. Mater. Electron., vol. 34, no. 7, p. 624, 2023.
K. Chopra, Thin film device applications. Springer Science & Business Media, 2012.
M. Ozga, J. Kaszewski, A. Seweryn, P. Sybilski, M. Godlewski, and B. S. Witkowski, “Ultra-fast growth of copper oxide (II) thin films using hydrothermal method,” Mater. Sci. Semicond. Process., vol. 120, p. 105279, 2020.
M. A. Green, “Third generation photovoltaics: Ultra‐high conversion efficiency at low cost,” Prog. Photovoltaics Res. Appl., vol. 9, no. 2, pp. 123–135, 2001.
M. Dahrul and H. Alatas, “Preparation and optical properties study of CuO thin film as applied solar cell on LAPAN-IPB Satellite,” Procedia Environ. Sci., vol. 33, pp. 661–667, 2016.
R. D. Prabu et al., “An effect of temperature on structural, optical, photoluminescence and electrical properties of copper oxide thin films deposited by nebulizer spray pyrolysis technique,” Mater. Sci. Semicond. Process., vol. 74, pp. 129–135, 2018.
H. Cavusoglu and R. Aydin, “Complexing agent triethanolamine mediated synthesis of nanocrystalline CuO thin films at room temperature via SILAR technique,” Superlattices Microstruct., vol. 128, pp. 37–47, 2019.
R. K. Mohammad and A. Elttayef, “Structural properties of Ag-CuO thin films on silicon prepared via DC magnetron sputtering,” Egypt. J. Chem., vol. 65, no. 4, pp. 685–691, 2022.
Ş. Baturay, “Conversion from p-to n-type conductivity in CuO thin films through Zr doping,” J. Electron. Mater., vol. 51, no. 10, pp. 5644–5654, 2022.
K. L. Chopra and S. K. Bahl, “Amorphous versus crystalline GeTe films. I. Growth and structural behavior,” J. Appl. Phys., vol. 40, no. 10, pp. 4171–4178, 1969.
M. Dhaouadi et al., “Physical properties of copper oxide thin films prepared by sol–gel spin–coating method,” Am. J. Phys. Appl., vol. 6, no. 2, pp. 43–50, 2018.
D. S. Permyakov, S. I. Rembeza, T. G. Menshikova, V. E. Polkovnikov, and M. A. Belykh, “Influence of annealing on the electrophysical properties of copper oxide (II) thin film, prepared by sol-gel method,” Nano Hybrids Compos., vol. 28, pp. 48–52, 2020.
H. Absike, H. Labrim, B. Hartiti, M. Tahri, and H. Ez-Zahraouy, “Influence of spinning speed on the physical properties of sol-gel spin coated CuO films,” Mol. Cryst. Liq. Cryst., vol. 711, no. 1, pp. 18–31, 2020.
I. Salih, “Color Characterizations of Pure ZnO and ZnO/SeO2 Thin Films Annealed at Different Temperature,” Kirkuk Univ. Journal-Scientific Stud., vol. 15, no. 4, pp. 107–124, 2021. University of Kirkuk.
Z. Ali. A. H., Salih, A. I., & Ghaleb, A. M., “The Effect of Annealing Temperature on the Structural Properties and Color Properties of Tin Oxide Thin Films by the Sol-Gel Method,” University of Kirkuk, 2024.
H. Absike et al., “Synthesis of CuO thin films based on Taguchi design for solar absorber,” Opt. Mater. (Amst)., vol. 118, p. 111224, 2021.
K. I. Mohammed, F. M. Jasim, and M. I. Azawe, “Influence of thickness and crystalline structure on thermal and optical properties of ZnO thin films,” Curr. Appl. Phys., vol. 14, no. 9, pp. 1318–1324, 2014.
C. Bamford, Colour generation and control in glass, 1977.
F. W. Billmeyer and M. Saltzman, Principles of color technology, 1981.
Copyright (c) 2025 Central Asian Journal of Theoretical and Applied Science

This work is licensed under a Creative Commons Attribution 4.0 International License.