Enhanced power factor in Ho 3+ doped ZnO: A new material for TE Application.

In this work we investigate the structural, chemical and thermoelectric property of Ho doped ZnO based material as a function of temperature. The thermoelectric properties were measured in a temperature 100-700 °C and found that Holmium doped samples posses a remarkable effect on transport properties in pure ZnO. Negative thermopower ensured that electrons are the majority charge carriers. Seebeck Coefficient and resistivity are found to be lower for the Holmium doped samples results for the enhancement in power factor. Power factor corresponding to 0.9 wt % doped Ho is found to be 0.57*10 -4 W/mK2,so that it can be considered as a potential candidate for thermoelectric application. [ABSTRACT FROM AUTHOR]