Skutterudite thermoelectric semiconductor doped with silicon and tellurium, method for producing the same, and thermoelectric power generation element using the same

摘要

PROBLEM TO BE SOLVED: To provide a skutterudite thermoelectric conversion semiconductor which has a good thermoelectric performance even in the case of not using a rare earth, Ba or the like which is questionable in terms of stable supply or oxidation resistance.SOLUTION: The above objective is achieved by a Si- and Te-doped skutterudite thermoelectric semiconductor having the following composition: CoSbSiTe(where 0.003x0.25, and 0.025y0.40). The thermoelectric semiconductor can be further enhanced in thermoelectric performance by annealing.SELECTED DRAWING: Figure 6