Document Details

Document Type : Article In Journal 
Document Title :
Effect of Ag incorporation on electrical and optical properties of Se-S chalcogenide thin films
Effect of Ag incorporation on electrical and optical properties of Se-S chalcogenide thin films
 
Subject : Physics 
Document Language : English 
Abstract : The dc electrical conductivity of as evaporated thin films of Se75S25-xAgx, grown by vacuum evaporation technique is measured as a function of temperature (294-383 K). It is observed that the dc conductivity decreases at all the temperatures with the increase of silver content in the binary system. The experimental data suggests that the conduction is due to thermally assisted tunneling of the carriers in the localized states near the band edges. The extracted value of activation energy is found to increase on incorporation of silver contents in the Se-S system. Compositional dependence of the optical properties of as deposited Se75S25-xAgx thin films of thickness 300 nm have also been studied in the spectral range from 400 to 1000 nm. It has been found that the optical band gap increases on incorporation of silver contents in Se-S system. The values of absorption coefficient (α) and extinction coefficient (k) increases with increasing photon energy and silver concentration. The results are interpreted in terms of the change in concentration of localized states due to the shift in Fermi level. © 2009 Elsevier B.V. All rights reserved. 
ISSN : 0921-4526 
Journal Name : Physica B: Condensed Matter 
Volume : 404 
Issue Number : 8 
Publishing Year : 2009 AH
2009 AD 
Number Of Pages : 5 
Article Type : Article 
Added Date : Tuesday, October 13, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سلمان أحمد خانSalman Ahmad KhanResearcherDoctoratesahmad_phd@yahoo.co.in
فرج سعيد مرشود الحازمىAl-Hazmi, F.SResearcherDoctorateFalhazmi@kau.edu.sa
على محمد على السنوسيAli Mohammed AlsanoosiResearcherDoctorateasanoosi@kau.edu.sa
عادل صالح وعظ الدين فيدهAdel Saleh FaidahResearcherDoctorateafaidah@kau.edu.sa
سعود جميل مصطفى يغمورYaghmour, S.JResearcherDoctoratesyaghmour@kau.edu.sa
احمد عبدالله سالم آل موسى الغامديAl-Ghamdi, A.AResearcherDoctorateAGAMDI@kau.edu.sa

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