Thermoelectric semiconductor material, manufacture process therefor, and method of hot forging thermoelectric module using the same

摘要

A thermoelectric semiconductor material having sufficient strength and performance and high production yield. The thermoelectric semiconductor material is characterized in that a sintered powder material of a thermoelectric semiconductor having a rhombohedral structure (or hexagonal structure) is hot-forged and plastically deformed to direct either the crystals of the sintered powder structure or the subcrystals constructing the crystals in a crystal orientation having an excellent figure of merit.