Electron thermal EMF for Na_xCu_2-xS

Abstract

Abstract. In the present study, the temperature dependences of the thermoelectromotive force (thermo-emf) in copper selenide, substituted in a small concentration, were studied. The results of the measurements showed that the thermo-emf coefficient of the samples increases, and the conductivity decreases with increasing silver concentration in its composition. These results allow -with optimal selection of the doping regime and protective coatings -to develop on the basis of nanostructured copper selenide an effective thermoelectric for use at temperatures of 20-500 о С as p-type semiconductors suitable for increasing the efficiency of thermoelectric generators.