Document Details

Document Type : Article In Journal 
Document Title :
Thermal annealing effect of on optical constants of vacuum evaporated Se75S25-xCdx chalcogenide thin films
Thermal annealing effect of on optical constants of vacuum evaporated Se75S25-xCdx chalcogenide thin films
 
Subject : Physics 
Document Language : English 
Abstract : Chalcogenide glasses are interesting materials due to their infrared transmitting properties and photo induced effects exhibited by them. Thin films with thickness of 3000 Å of the glasses Se75S25-xCdx with x=6, 8 and 10 at% prepared by melt quench technique were evaporated by thermal evaporation onto glass substrates under a vacuum of 10-6 Torr. The optical constants (absorption coefficient, refractive index and extinction coefficient) of as-prepared and annealed films have been studied as a function of photon energy in the wave length region 400-1000 nm. Analysis of the optical absorption data shows that the rule of non-direct transitions predominates. It has been found that the absorption coefficient and optical band gap increase with increasing annealing temperatures. The refractive index (n) and the extinction coefficient (k) were observed to decrease with increasing annealing temperature. 
ISSN : 00303992 
Journal Name : Optics and Laser Technology 
Volume : 42 
Issue Number : 5 
Publishing Year : 1431 AH
2010 AD 
Article Type : Article 
Added Date : Saturday, April 10, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
شمشاد أحمد خانKhan, shamshad AhmadResearcherDoctorateshamshad_phys@yahoo.com
J K LalLal, J KResearcherDoctorate 
أحمد عبدالله الغامديAL-GHAMDI, A AResearcherDoctorateAGAMDI@kau.edu.sa

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