Depending the Structural and Optical Properties of ZnTe Thin Films on Cd Doping by Thermal Evaporation

https://doi.org/10.29350/2411-3514.1282
Volume 29, Issue 2 - Serial Number 2
Autumn 2024
Pages 237-242
Abstract
In this paper, pure ZnTe films doped with Cd were prepared by the thermal evaporation method in a vacuum and
deposited on glass bases at a temperature (300k) and thickness (300 ± 20) nm. Then annealing was performed at different
temperatures (250 and 350) Cfor 1 h. The effects of thickness and annealing temperature on the prepared films were studied.
The X-ray measurements XRD results showed that all the films, whether they were pure or doped, had polycrystalline and
cubic crystal structures and appeared to include some Te in their hexagonal phase, with growth in the direction (111) predominating
in all the filmsmade. The opticalUVresults showed that as the doping ratiowent up, the energy gap valueswent
down from 2.58 eV to 2.12 eV, while the transmittance spectrum went up as the annealing temperature went up.

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