Thermoelectric properties of polycrystalline WS2 with Nb replacement of metal atoms

The thermoelectric properties of polycrystalline materials on the base of WS2 with Nb partial replacement of metal atoms W have been researched in this work. The temperature characteristics of the materials have been measured in the temperature range from 77 to 300 K. We have found that replacement of metal atoms W partly with Nb significantly increases the electrical conductivity and decreases the Seebeck coefficient. The best stoichiometric ratio in terms of the thermoelectric properties has had material W0.90Nb0.10S2. This material has had a value of power factor 32 μW/m²·K.