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A STUDY ON THE EFFECT OF GAMMA – RAY ON STRUCTURAL AND OPTICAL PROPERTIES OF ZINC SULFIDE (ZnS) THIN FILMS | ||
| DIYALA JOURNAL OF ENGINEERING SCIENCES | ||
| Article 16, Volume 3, Issue 0, 2010, Pages 93-103 PDF (0 K) | ||
| Author | ||
| Kareem K. Mohammad | ||
| Abstract | ||
| ABSTRACT:- In this search prepared Zinc Sulfide (ZnS) thin film by using the method of thermal evaporation in vacuum under pressure (10 -5 mbar) of thickness (200) nm on glass substrate at temperature of (100C). Also the search had included studying some of the structure and optical properties of (ZnS) thin film before and after irradiation from Co- 60 by with double ray doses (10-20) Mrad on respectively. The results. (X-ray) examination showed that all the thin films amorphous structure before and after irradiation through the measurement of the absorption and transmission spectra within the range of wave length of (200-600) nm .It was found the absorption increases but the transmission decreases as a data of waving length with increasing of ray doses . A calculation were carried out for measuring forbidden energy gap for direct allowed and forbidden, it was noticed that there were decreases in the value of forbidden energy gap as the doses increases also a calculation of the optical constant carried such as extinction coefficient refractive index, reflectance, real imaginary part of dielectric constant of thin films before and after irradiation. | ||
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