الفهرس 
Theoretical Background and Literature ReviewOnly 14 pages are availabe for public view
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Abstract
The present thesis is devoted to investigate the structure, optical and ac electrical properties of the as-deposited Se90S10-xCdx i) The structure properties for Se (x=0 and 5) thin films. 90S10-xCdx (x=0 and 5) compositions include:- 1- X-ray diffraction Patterns XRD of Se90S10-xCdx 2- Differential thermal analysis DTA of the investigated compositions in powder form. (x=0 and 5) in powder and thin film forms. 3- Energy dispersive X-ray spectroscopy EDX to check the constituent elements of the studied compositions. ii) The optical properties include the determination and analysis of the optical constants (refractive index n and the absorption index k) for the as deposited Se90S10-xCdx (x=0 and 5) film compositions using spectrophotometric method in the spectral range (350-2500nm). iii) The electrical properties were studied for the as-deposited Se90S10-xCdx (x=0 and 5) film compositions included the ac conductivity and dielectric properties in the frequency range (50Hz-5MHz). Contents