Document Details

Document Type : Article In Journal 
Document Title :
Electrical and Thermal Transport Properties of TlGaSe2 Single Crystals
الخواص الحرارية الانتقالية والكهربائية للبلورة النقية لثلاثي الشالكوجنيدي ثاليوم-جاليوم-ثنائي السيلينيوم
 
Subject : Electrical and Thermal Transport Properties of TlGaSe2 Single Crystals 
Document Language : English 
Abstract : The electrical conductivity (?) and Hall coefficient (RH) of single crystals prepared by a special modified Bridgman technique have been investigated over the temperature range 245-495 K. Our investigation showed that our samples are p-type conducting. The dependence of the Hall mobility on temperature was presented graphically. The forbidden energy gap was calculated and found to be 2.1 eV whereas the ionization energy of the impurity level was 0.36 eV. The values of the electrical conductivity, Hall coefficient and carrier concentration at room temperature were 1.87 × 10–6 ?–1 cm–1, 3.98 × 109 cm3 C–1 and 1.57 × 109 cm–3 respectively. The Hall mobility at room temperature (?H) was found to be 7.46 × 103 cm2 V–1s–1. Also, the thermoelectric power (TEP) was investigated in the temperature range 271-493 K. The combination of the electrical and thermal measurements in the present investigation makes it possible to find various physical parameters such as mobilities, effective mass, relaxation times, diffusion coefficients and diffusion lengths both for majority and for minority carriers, Also figure of merit was determined. These parameters reveal the general behavior of this semiconductor. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 21 
Issue Number : 1 
Publishing Year : 1430 AH
2009 AD 
Article Type : Article 
Added Date : Sunday, September 29, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
نجاة توفيقTawfeeg, Najat Researcher  
صباح القرنيAlgarni, Sabah Researcher  
فاطمة باهبريBahabri, Fatmah Researcher  
جمال عطيةAtiah, Jamal Researcher  
سهام الحربيAlharbi, Seham Researcher  
أحمد الغامديAlgamdi, Ahmed Researcher  

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