Document Details

Document Type : Article In Journal 
Document Title :
Optical constants of new amorphous As–Ge–Se–Sb thin films
الثوايت الضوئية لأغشية رقيقة جديد من النظام زرنيخ - جرمانيوم-سيلينيوم -أنتيمون
 
Subject : Optical properties by using only transmittance 
Document Language : English 
Abstract : The present paper reports the effect of replacement of selenium by antimony on the optical constants of new quaternary chalcogenide As14Ge14Se72xSbx (where x = 3, 6, 9, 12 and 15 at.%) thin films. Films of As14Ge14Se72xSbx glasses were prepared by thermal evaporation of the bulk samples. The transmission spectra, T(k), of the films at normal incidence were obtained in the spectral region from 400 to 2500 nm. A straightforward analysis proposed by Swanepoel, based on the use of the maxima and minima of the interference fringes, has been applied to derive the real and imaginary parts of the complex index of refraction and also the film thickness. Increasing antimony content is found to affect the refractive index and the extinction coefficient of the As14Ge14Se72xSbx films. Optical absorption measurements show that the fundamental absorption edge is a function of composition. With increasing antimony content the refractive index increases while the optical band gap decreases. 
ISSN : 06-001 
Journal Name : Acta Materialia 
Volume : 56 
Issue Number : 56 
Publishing Year : 1429 AH
2008 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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