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Research Paper | Material Science | Algeria | Volume 12 Issue 7, July 2023 | Rating: 5.1 / 10

Simulation of the Optical Properties of Zn1-xCoxO Thin Films Grown Onto Glass Substrate by Ultrasonic Spray Pyrolysis

Sabrina Roguai | Abdelkader Djelloul

Abstract: Zn1-xCoxO thin films (x=0-22 at.%) were prepared using the ultrasonic pyrolysis sputtering technique. The films have a hexagonal wurtzite structure, confirmed by X-ray difraction, with an estimated average crystallite size in the range of 18-30 nm. Concerning the optical properties, by applying the Levenberg-Marquardt least squares method, the experimental transmittance data were perfectly fitted with the transmittance data calculated via a combination of the Wemple-DiDomenico model, the absorption coefficient of an electronic transition and the Tauc-Urbach model. Decreases in bandgap energy due to the presence of high concentrations of localized states in thin films were calculated from the Smakula formula

Keywords: Thin films, X-ray diffraction, Optical properties

Edition: Volume 12 Issue 7, July 2023,

Pages: 1202 - 1206