Design And Fabrication Of A Low-Cost Dip Coating System For Depositing Homogeneous And Transparent Zno Thin Films

Authors

Asaad S. Yasir, Department of Physics/ College of Science/ University of Kerbala, Kerbala, Iraq.Follow
Basheer M. Hussein, Department of Physiology and Medical Physics/ College of Medicine/ University of Al-Ameed, Kerbala, Iraq
Ammar S. Hameed, Department of Physics/ College of Science/ University of Kerbala, Kerbala, Iraq.
Noor J. Ridha, Department of Physics/ College of Science/ University of Kerbala, Kerbala, Iraq.
Firas K. Mohamad Alosfur, Department of Environmental Health, College of Applied Medical Sciences, University of Kerbala, Kerbala, Iraq
Khawla J. Tahir, Department of Physics/ College of Science/ University of Kerbala, Kerbala, Iraq
Rajaa A. Madlol, Department of Physics/ College of Science/ University of Kerbala, Kerbala, Iraq

Abstract

ZnO has a resistivity of up to 104 Ω cm-1 in most cases. Nevertheless, by increasing the layer thickness, the resistivity decreases as well, resulting in greater current transport. The dip coating system was developed to prepare the ultra-thin film, it relied on a controller, stepper motor and some low-cost recycled materials. Thin films of ZnO were successfully deposited on indium tin oxide substrates. The effects of the dipping cycles were investigated. Dipping processes were applied several times (1, 2, and 3) for the same concentrations (0.1) M to obtain homogeneous thin films. X-ray diffraction showed that the structure of ZnO is hexagonal Wurtzite. The crystals were in the nanoscale size range as (19.18, 24.76, and 31.29) nm. As for the examination by FESEM, it was found that homogeneous layers formed when increasing the number of times of coating for the prepared thin films. High transmittance, decreasing in energy gap, and suitable surface resistance ZnO thin films were achieved. In the wavelength range of 190 – 1100 nm, the thin films had an optical transmittance of up to 87%. The sheet resistance values were determined to be 19.202 Ω sq-1 indicating that the characteristics of ZnO thin films have improved. The dip coating device is designed to be easy to use, inexpensive and economic in terms of using the raw materials. This low-cost manufactured device contributes to scientific development for researchers who are unable to buy expensive devices that perform the same purpose and give the same results.

Recommended Citation

Yasir, Asaad S.; Hussein, Basheer M.; Hameed, Ammar S.; Ridha, Noor J.; Alosfur, Firas K. Mohamad; Tahir, Khawla J.; and Madlol, Rajaa A. (2022) "Design And Fabrication Of A Low-Cost Dip Coating System For Depositing Homogeneous And Transparent Zno Thin Films," Al-Bahir Journal for Engineering and Pure Sciences: Vol. 1: Iss. 2, Article 2.
Available at: https://doi.org/10.55810/2313-0083.1008

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