Document Details

Document Type : Article In Journal 
Document Title :
Effect of composition on electrical and optical properties of thin films of amorphous GaxSe100-x nanorods
Effect of composition on electrical and optical properties of thin films of amorphous GaxSe100-x nanorods
 
Subject : Physics 
Document Language : English 
Abstract : We report the electrical and optical studies of thin films of a-GaxSe100-x nanorods (x = 3, 6, 9 and 12). Thin films of a-GaxSe100-x nanorods have been synthesized thermal evaporation technique. DC electrical conductivity of deposited thin films of a-GaxSe100-x nanorods is measured as a function of temperature range from 298 to 383 K. An exponential increase in the dc conductivity is observed with the increase in temperature, suggesting thereby a semiconducting behavior. The estimated value of activation energy decreases on incorporation of dopant (Ga) content in the Se system. The calculated value of pre-exponential factor (σ0) is of the order of 101 Ω-1cm-1, which suggests that the conduction takes place in the band tails of localized states. It is suggested that the conduction is due to thermally assisted tunneling of the carriers in the localized states near the band edges. On the basis of the optical absorption measurements, an indirect optical band gap is observed in this system, and the value of optical band gap decreases on increasing Ga concentration. 
ISSN : 1931-7573 
Journal Name : Nanoscale Research Letters 
Volume : 5 
Issue Number : 9 
Publishing Year : 1431 AH
2010 AD 
Article Type : Article 
Added Date : Monday, November 14, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ذيشان حسين خانKhan, Zishan HResearcherDoctoratezishan_hk@yahoo.co.in
سلمان أحمد خانKhan, Salman AResearcherDoctoratesahmad_phd@yahoo.co.in
نعمان صلاحSalah, Numan ResearcherDoctoratensalah@kau.edu.sa
سامي حبيبHabib, Sami ResearcherDoctorateshabib@kau.edu.sa
سالم محمود عبدالله الحميديEl-Hamidy, S.M AbdallahResearcherMastersalem1133@yahoo.com
أحمد عبدالله الغامديAl-Ghamdi, Ahmad AResearcherDoctorateAGAMDI@kau.edu.sa

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