Activation energy of psuedobinary alloy of Al-Bi-Se mixed systems

Abstract

The electronic properties of pseudobinary alloy Al-Bi-Se mixed systems were examined at temperatures 303–353K. Current-voltage characteristics were obtained at electric field values 0.20 - 0.65V/m. The results in the study showed that the conductivity of the alloys increases with increase in temperature of the samples. The current-voltage characteristics also show linear relationship which satisfies the Arrhenius relation δ = δ_oexp (-ξ/kT) typical of semiconductor materials. The activation energy of the sample was found to be 0.012eV. This indicates that the Al-Bi-Se mixed systems posses semiconductor properties and can therefore, be used in thermo-electric devices.

Keywords: electronic conductivity, Al-Bi-Se, activation energy

Nigeria Journal of Pure and Applied Physics Vol. 4(1) 2005: 68-70