Thermal Transport Properties of TlInTe2 Single Crystals

A. Al-Ghamdi, A. Nagat, F. Al-Hazmi, S. Al-Heniti, S. Al-Ghahtany, F. Shokr
2009 Journal of King Abdulaziz University-Science  
Thallium indium ditelluride single crystal, was prepared by a special design constructed by our group. A brass working chamber designed for measuring (TEP) in a wide range of temperature was used. The experimental results indicates that T1InTe 2 is of p-type conductivity. The mobility of charge carriers, holes and electrons was found to be 2.129 × 10 3 cm 2 / V, sec and 1.218 × 10 5 cm 2 / V, sec respectively. The effective masses of the majority and minority carriers were deduced to be 5.367 ×
more » ... duced to be 5.367 × 10 -37 kg and 6.856 × 10 -43 kg respectively. The diffusion coefficient, relaxation time and diffusion length for holes was calculated to be 551.436 cm 2 / sec, 7.142 × 10 -21 sec and 1.986 × 10 -9 cm respectively. Also D n . τ n , L n for the electrons was calculated to be 3.156 × 10 3 cm 3 / sec, 5.222 × 10 -26 sec and 1.284 × 10 -11 cm respectively. In addition to these pronounced parameters, the efficiency of the thermoelectric element (figure of merit) was evaluated, which leads to better application in many fields .
doi:10.4197/sci.21-1.1 fatcat:tcihi5bscvao7ng4hkgm5sue4e