Patent ID: 8692103
Filing Date: 2014-04-08
Classification: B22D,H01L

Abstract:
1. A method of producing a thermoelectric semiconductor material, the method comprising: adding excess Te to a predetermined stoichiometric composition of a compound thermoelectric semiconductor to form a raw alloy; layering and packing plate shaped raw thermoelectric semiconductor materials made of the raw alloy to form a layered body; solidifying and forming the layered body to form a compact; plastically deforming the compact to form a thermoelectric semiconductor material, by applying pressure to the compact in uniaxial direction perpendicular or nearly perpendicular to a main layering direction of the raw thermoelectric semiconductor materials so as to apply shear force to the compact in uniaxial direction approximately parallel to the main layering direction of the raw thermoelectric semiconductor materials, wherein the thermoelectric semiconductor material formed has a compound phase which includes: a complex compound semiconductor phase having the predetermined stoichiometric composition, and a Te rich phase in which excess Te is included to the stoichiometric composition.