Journal of Materials Science Research and Reviews

Determination of Electronic Quality Factor, Universal Electrical Conductivity, Effective Mass and Mobility of Charge Carriers of Alloy N-SixGe1-X

Karlo Barbakadze

Sukhumi Institute of Physics and Technology, Georgia.

Giorgi Kakhniashvili

Institute of Cybernetics of Georgian Technical University, Georgia.

Zurab Adamia

Tbilisi State University, Georgia and University of Georgia, Georgia.

Irakli Nakhutsrishvili *

Institute of Cybernetics of Georgian Technical University, Georgia.

*Author to whom correspondence should be addressed.

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Abstract

The temperature dependences of the electronic quality factor and the universal electrical conductivity of n-type Si_xGe_1-x, as well as the dependences of the Seebeck coefficient on the specific and the universal conductivities, are studied. The effective masses and mobilities of charge carriers are calculated for different temperatures, temperature dependences of the eleqtronic quality factor and the thermoelectric figure of merit are studied. Based on the investigated n-Si_xGe_1-x (x=0.83) together with p-Si_0.83Ge_0.17, a thermoelectric module was manufactured and its energetic characteristics were studied.

Keywords: Thermoelectric sige, electronic quality factor, universal electrical conductivity

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