Bi2Te3-based thermoelectric material composition having p-n transition prevention property

摘要

The present invention relates to a Bi₂Te₃And Ag₂Bi having a p-n transition prevention property added with a small amount of S₂Te₃To a thermoelectric material composition. The composition of the present invention is Bi₂Te₃67%-Sb₂Te₃33% of the basic composition Ag₂S is added up to 20 mol%, and the sintered body is composed of a polycrystalline sintered body. The thermoelectric material composition of the present invention has the advantage that the p-n transition does not occur in the production of the sintered body and the figure of merit shows a value equivalent to that of a single crystal.