Preparation and characterizationof Titanium dioxide and Zinc oxide thin films via Sol-Gel (spin coating) technique for optoelectronicapplications

Dahnoun, Mohamed (2020) Preparation and characterizationof Titanium dioxide and Zinc oxide thin films via Sol-Gel (spin coating) technique for optoelectronicapplications. Doctoral thesis, University Mohamed Khider Biskra.

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Abstract

In the present work we used Sol-Gel spin coating technique to deposit Titanium dioxide and Zinc oxide thin films. Our main goal is the production of films with suitable optoelectronic properties required for application as front transparent electrodes. In the first part we have prepared and characterized Titanium dioxide by varying the deposition parameters such as: the nature of stabilizer, annealing temperature, molar concentration and Zn doping, this last is accomplished with the goal to enhance the electrical properties. In the second part of this work we have deposited and studied the influence of the nature of stabilizer, annealing temperature and Ga doping on the properties of ZnO thin films. The structural, optical and electrical properties were investigated through: X-ray diffraction, Fourier transform-infrared, Photoluminescence, Raman spectroscopy, UV-visible spectroscopy, Scanning electron microscopy and Four-point probe method.

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