Thermoelectric Behavior of Silicon Nano Wire for Acoustic Phonon Scattering Including Multi Sub-Band Effect

Abstract

Thermoelectric power generation is non-conventional source of energy. Thermoelectric power can be increased by optimisation of figure of merit. Figure of merit of the materials increases in the form of low dimensional structure -nanowire. For the acoustic phonon scattering, thermoelectric behaviour of Silicon nanowire enhances due to the contribution of sub-bands beyond the quantum size limit and multi band effect has play significant role in transport phenomenon. The large value of operating temperature range, low values of thermal conductivity and high value of ZT makes Silicon nanowire useful for thermoelectric materials at high temperature. The high conversion efficiency of thermoelectric chip based on Silicon nanowire can be commercialised used in industry.