Electrical and Structural properties of Copper Oxide (CuO) thin films on Plastic substrate deposited by spray pyrolysis technique

Mohammad G. Faraj, Askander K. Kaka, Halo D. Omar


In this paper, copper oxide (CuO) thin films were deposited on polyimide (PI) Plastic substrates with spray pyrolysis technique with different temperatures (i.e. 250–300 °C). All the deposited films were characterized by X-ray diffraction (XRD) and Hall Effect measurements for the Structural and electrical properties. Effects of substrate temperature on the structural and electrical characteristics of the films were studied. The X-ray diffraction patterns’ results reveal that the all of CuO films have a face centered cubic structure. The crystallite grain size was calculated using Scherrer formula and it is found that the substrate temperature (300 0C) has maximum crystallite grain size (81.2 nm). Hall Effect measurements showed that all the films are of p-type conductivity. Depending on the substrate temperature, Hall measurement showed that the electrical resistivity and the carrier concentration varied in the range 77.4 Ω.cm to 52.7 Ω.cm and  6.3 x1015 cm-3 to  10.1 x1015 cm-3.


Copper oxide, Chemical Spray Pyrolysis, Thin Film, Polyimide

Full Text:



Abbas, S.Z., Aboud, A.A., Irfan, M., and Alam, S., 2013. Effect of substrate temperature on structure and optical properties of Co3O4 film prepared by spray pyrolysis technique. IOP Conference Series Materials Science and Engineering, 60, pp.012058.

Akkari, F.C., Kanzaria, M., and Rezig, B., 2007. Preparation and characterization of obliquely deposited copper oxide thin films. European Physical Journal- Applied Physics, 40, pp.49-54.

Amri, A., Duan, X.F., Yin, C.Y., Jiang, Z.T., Mahbubur, R.M., and Pryor, T., 2013. Solar absorptance of copper-cobalt oxide thin film coatings with nano-size, grain-like morphology: Optimization and synshrotron radiation XPS studies. Applied Surface Science, 275, pp.127-135.

Birks, L., 1946. Particle size determination from X-Ray Line Broadening. Journal of Applied Physics, 17, pp.687-692.

Chandrasekaran, S., 2013. A novel single step synthesis, high efficiency and cost effective photovoltaic applications of oxidized copper nano particles. Solar Energy Materials and Solar Cells, 109, pp.220-226.

Chaudhary, Y.S., Agrawal, A., Shrivastav, R., Satsangi, V.R., and Dass, S., 2004. A study on the photo electrochemical properties of copper oxide thin films. International Journal of Hydrogen Energy, 29, pp.131-134.

Dolai, S., Dey, R., Das, S., Hussain, S., Bhar, R., and Pal, A.K., 2017. Cupric oxide (CuO) thin films prepared by reactive d.c. magnetron sputtering technique for photovoltaic application. Journal of Alloys and Compounds, 724, pp.456-464.

Faraj, M.G., and Omar, H.D., 2014. The effect of substrate temperature on the structural properties of spray pyrolysed lead sulphide (PbS) thin films. Aro the Scientific Journal of Koya University, 2, pp.11-14.

Faraj, M.G., and Pakhuruddin, M.Z., 2015. Deposited lead sulfide thin films on different substrates with chemical spray pyrolysis technique. International Journal of Thin Films Science and Technology, 4, pp.215-217.

Faraj, M.G., and Taboada, P., 2017. Comparative studies of the properties of ZnO sprayed thin films on different polymer substrates for flexible solar cell applications. Journal of Inorganic and Organometallic Polymers and Materials, 27, pp.1405-1411.

Faraj, M.G., and Taboada, P., 2017. Structural and optical properties of ZnO thin films prepared by spray pyrolysis on PI plastic substrates at various temperatures for integration in solar cell. Journal of Materials Science: Materials in Electronics, 28, pp.16504-16508.

Faraj, M.G., Ibrahim, K., Eisa, M.H., and Alrajhi, M.A., 2014. Comparison of aluminium thin film deposited on different polymer substrates with thermal evaporation for solar cell applications. Journal of Ovonic Research, 10, pp.231-235.

Faraj, M.G., Pakhuruddin, M.Z., and Taboada, P., 2017. Effects of substrate temperature on structural and optical properties of spray pyrolyzed Cu(Ga0.3In0.7) Se2 thin films on polyimide plastic substrate. Journal of Electronic Materials, 46, pp.6745-6749.

Faraj, M.G., Pakhuruddin, M.Z., and Taboada, P., 2017. Structural and optical properties of cadmium sulfide thin films on flexible polymer substrates by chemical spray pyrolysis technique. Journal of Materials Science: Materials in Electronics, 28, pp.6628-6634.

Haug, F.J., Geller, Z.S., Zogg, H., Tiwari, A.N., and Vignali, C., 2001. Influence of deposition conditions on the thermal stability of ZnO: Al films grown by rf magnetron sputtering. Journal of Vacuum Science and Technology, A19, pp.171-174.

Hubner, M., Simion, C.E., Tomescu-Stanoiu, A., Pokhrel, S., Barsan, N., and Weimar, U., 2011. Influence of humidity on CO sensing with p-type CuO thick film gas sensors. Sensors and Actuators B, 153, pp.347-353.

Hussein, A.N., Muhammad, S.K., Mohsin, S.A., and Ajeel, F.N., 2015. Study on structure and optical properties of CuO thin films prepared by chemical spray pyrolysis. Journal of Applied Physical Science International, 4, pp.178-184.

Ismail, R.A., and Faraj, M.G., 2009. Study of optical and electrical properties of CdO prepared by chemical spray pyrolysis. Journal of College of Education, AL-Mustansiriyah University, 3, pp.532-539.

Lee, J.H., Park, B.O., 2004. Transparent conducting In2O3 thin films prepared by ultrasonic spray pyrolysis. Surface and Coatings Technology, 184, pp. 102-107.

Mariammal, R.N., Ramachandran, K., Kalaiselvan, G., Arumugam, S., Renganathan, B., and Sastikumar, D., 2013. Effect of magnetism on the ethanol sensitivity of undoped and Mn-doped CuO nanoflakes. Applied Surface Science, 270, pp.545-552.

Mohamed, J.R., Sanjeeviraja, C., and Amalraj, L., 2016. Influence of substrate temperature on physical properties of (111) oriented CdIn2S4 thin films by nebulized spray pyrolysis technique. Journal of Asian Ceramic Societies, 4, pp.191-200.

Morales, J., Sanchez, M., 2005. Use of low-temperature nanostructured CuO thin films deposited by spray-pyrolysis in lithium cells. Thin Solid Films, 474, pp.133-140.

Muhammad, F.F., and Sulaiman, K., 2011. Utilizing a simple and reliable method to investigate the optical functions of small molecular organic films Alq3 and Gaq3 as examples. Measurement, 44, pp.1468-1474.

Muhammad, F.F., Yahya, M.Y., Aziz, F., Rasheed, M.A., and Sulaiman, K., 2017. Tuning the extinction coefficient, refractive index, dielectric constant and optical conductivity of Gaq3 films for the application of OLED displays technology. Journal of Materials Science: Materials in Electronics, 28, pp.14777-14786.

Nalbant, A., Ertek, O., and Okur, I., 2013. Producing CuO and ZnO composite thin films using the spin coating method on microscope glasses. Materials Science and Engineering, 178, pp.368-374.

Oztas, M., Bedir, M., Kayalı, R., and Aksoy, F., 2006. Influence of the annealing conditions on the properties of InP thin films. Materials Science and Engineering: B, 131, pp.94-99.

Tauc, J., 1974. Amorphous and Liquid Semiconductors. Plenum Press, New York.

Valladares, L.D.L., Salinas, D.H., Bustamante, D.A., Acosta, N.D., Khondaker, S.I., Mitrelias, T., Barnes, C.H.W., Albino, J., and Y.M, 2012. Crystallization and electrical resistivity of Cu 2 O and CuO obtained by thermal oxidation Cu thin films on SiO2/Si substrates. Thin Solid Films, 520, pp.6368-6374.

DOI: http://dx.doi.org/10.14500/aro.10558
View Counter: Abstract | 388 | and PDF | 205 |

Article Metrics

Metrics Loading ...

Metrics powered by PLOS ALM


  • There are currently no refbacks.

Copyright (c) 2019 Mohammad G. Faraj, Askander K. Kaka, Halo D. Omar

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


ARO Journal is an OAJ supported by Koya University, it has no article submission/processing charges (APCs).
© 2013-2020, Koya University is a public University accredited by the Ministry of Higher Education and Scientific Research, KRG - F.R. Iraq.