Promising thermoelectric properties in some p-type half-Heuslers

N-type half-Heuslers are well-known due to their potential thermoelectric properties, however, our study shows that p-type half-Heusler alloys can be prepared with promising values. A series of Hf$_{x}$Zr$_{1-x}$Co$_{y}$Pt$_{1-y}$Sn$_{z}$Sb$_{1-z}$ samples have been synthesized, and thermoelectric properties have been measured. Our results show that the thermopower (S) increases and resistivity decreases in a good amount. In addition to the high power factors, thermal conductivity ($\kappa )$ kept low values, which indicate that we can get promising value by optimizing the combination of elements.