Study of the effect of annealing during and after deposition on (crystal growth and some physical properties) of zinc sulfide (ZnS) nanoparticles prepared by vacuum thermal evaporation method (PVD)

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Ghosoun Hadi Khudair , Asst. prof. Kasim H.Mohmood

Abstract

research deals with the study of the effect of annealing during and after
deposition on the optical and structural properties for zinc sulfide (ZnS) films
prepared on Soda glass bases under pressure (10^(-5) torr) by vacuum thermal
evaporation method. Then studying the crystal growth of thin films through the results
have been obtained, where the optical properties were studied during deposition by
taking temperatures ((50°C, 100°C, 150°C, 200°C) for an hour and after depositing
annealing at temperatures (R.T, 250°C, 300°C, 350°C) using a spectrometer from
Type (UV-Visible). It has been found during deposition that the transmittance
increases oscillating correspondingly with the increase in the wavelength of the
photon while it increases more oscillatory so that the transmittance eV (68,75,82,88)
corresponding to the temperature (R .T,250°C, 300°C,350°C ). The energy gap
decreased from eV (3.7,3.65,3.63,3.6) corresponding to temperatures
(200°C,150°C,100°C,50°C) to eV (3.44,3.45,3.47,3.48) corresponding to
temperatures Temperature (350°C, 300°C, 250°C, R.T after annealing.

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