Document Details

Document Type : Article In Journal 
Document Title :
Determination of the thickness and optical constants of amorphous Ge-Se-Bi
تحديد السمك والثوابت الضوئية للأغشية الأمورفية المحضرة من جرمانيوم-سيلينيوم- بزموث
 
Subject : Optical properties by using only transmittance 
Document Language : English 
Abstract : The effect of varying bismuth concentration on the optical constants of amorphous Ge20Se80xBix (where x¼0, 3, 6, 9 and 12 at%) thin films prepared by thermal evaporation has been investigated. The transmission spectra T() of the films at normal incidence were obtained in the spectral region from 400 to 2500 nm. An analysis proposed by Swanepoel [J. Phys. E: Sci. Instrum. 16 (1983) p.1214], based on the use of the maxima and minima of the interference fringes, was applied to derive the real and imaginary parts of the complex index of refraction and also the film thickness. Increasing bismuth content was found to affect the refractive index and extinction coefficient of the Ge20Se80xBix films. Optical absorption measurements show that the fundamental absorption edge is a function of composition. With increasing bismuth content, the refractive index increases while the optical band gap decreases. 
ISSN : 1478-6443 
Journal Name : Philosophical Magazine 
Volume : 89 
Issue Number : 89 
Publishing Year : 1430 AH
2009 AD 
Article Type : Article 
Added Date : Wednesday, December 29, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
كمال عبدالنبي عليAli, Kmal AbdualnabiResearcherDoctorate 

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