Thermoelectric Properties of Bulk Nanowire  Assemblies:

 

In this project, we have evaluated the thermoelectric properties of large-scale, high dense assemblies of nanowires. We have also enhanced the thermoelectric performance of the large-scale semiconductor nanowire pellets by optimally doping them with metals. Some of the salient results achieved from this research project include the following: a p-type zT value of 0.23 in copper-doped Zn3P2 nanowire pellets (this is more than two orders of magnitude higher than that observed in undoped Zn3P2 nanowire assemblies), and an n-type zT value of 0.6 in aluminum and gallium doped ZnO nanowire pellets (the highest reported zT values for any metal oxide system).      

 Thermoelectric figure-of-merit of zinc phosphide and zinc oxide nanowire assemblies

Thermoelectric figure-of-merit of zinc phosphide and zinc oxide nanowire assemblies