ELECTRICAL-PROPERTIES OF AGSBTE2 IN THE SOLID AND LIQUID STATES

The electrical conductivity and thermoelectric power of AgSbTe2 have b een investigated as a function of temperature from 240 degrees C to 85 0 degrees C. Experimental data are analyzed in terms of a model develo ped from the density of states and electrical transport in solid amorp hous semiconductors(1). The activation energy calculated from electric al conductivity data is found to be 0.218 eV for the solid and 0.43 eV for the liquid. Moreover, the coefficient of the linear decrease of e nergy gap with temperature was found to be 3.367 x 10(-4) eV/degrees K .