On thermoelectric figure-of-merit of Pb0.78Sn0.22Te〈Ge〉 solid solution

The investigation results of temperature dependences of thermoelectric parameters in the 140–440 K temperature range are reported for Pb0.78Sn0.22Te〈Ge(0.5 at.%)〉 solid solution, having p-type conductivity. The aim is to determine its perspectives as a promising material for thermoelements. Investigations have shown that the temperature dependences of thermoelectric parameters have some interesting features caused by phase transition observed at temperature 290 K.