Thermo-Electric Figure of Merits ZT of the Thick Rectangular PBTE Nano-Wire by Considering Acoustic Phonon Scattering Beyond Size Quantum Limits

Abstract

In the paper, we have study thermo-electric figure of merits ZT of thick rectangular PbTe nanowire by the formulation based on the Boltzmann relaxation time approach for acustic phonon scattering. In PbTe nanowire beyond size quantum limit thermoelectric figure of merits optimum for the diameter of the wire in the range 75nm-125nm and operating temperature range of the device 300K-800K. The high value of ZT expected at lower concentration of the carrier and optimum cross-sectional size of the nanowire. The PbTe nanowire are useful for geothermal energy generation.