Effect of substrate temperature on structural and optical properties of cadmium sulfide thin films prepared by evaporation thermal deposition

Nadheer Jassim Mohammed; Hassan A. Mahdi; Safaa F. Madlul; Adnan Kh. Hasan

doi:10.23851/mjs.v30i1.557

Authors

Nadheer Jassim Mohammed Thin Films Lab., Physics Department, College of Science, Mustansiriyah University
Hassan A. Mahdi Thin Films Lab., Physics Department, College of Science, Mustansiriyah University
Safaa F. Madlul Thin Films Lab., Physics Department, College of Science, Mustansiriyah University
Adnan Kh. Hasan Thin Films Lab., Physics Department, College of Science, Mustansiriyah University

DOI:

https://doi.org/10.23851/mjs.v30i1.557

Keywords:

Cadmium sulfide, Evaporation thermal deposition method, grain size, substrate temperature, thin films, optical properties, structural properties.

Abstract

In this research , we study the effect of substrate temperature (423K and 473K) on structural and optical properties for thin films of cadmium sulfide (CdS) by evaporation thermal deposition method on glass substrates and the thickness was about (390nm).XRD analysis showed that CdS thin films prepared at (423K and 473K) are single crystal and have preferred orientation along (002).The grain size was found to be increased with increasing substrate temperature, in addition, the atomic force microscopy(AFM) an increase in root mean square (RMS) with an increase in substrate temperature. The absorbance and transmittance spectra have been recorded in the range off wave length(400-800nm), and it was found that the transmittance decreases with increasing substrate temperature, while the optical band gap decreases from (2.4-2.2ev)for allowed direct transition. CdS thin films should further investigated for application towards the fabrication of solar cells.

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Author Biography

Nadheer Jassim Mohammed, Thin Films Lab., Physics Department, College of Science, Mustansiriyah University

Physics department

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