N-TYPE THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION MODULE, METHOD FOR MANUFACTURING N-TYPE THERMOELECTRIC CONVERSION MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide n-type thermoelectric conversion material having excellent thermoelectric characteristics and little aging effect.SOLUTION: N-type thermoelectric conversion material comprises: at least one element of Bi and Sb; at least one element of Te and Se; Cu as a dopant; and a crystal grain where short side length is 10 to 150 μm, long side length is 300 to 1000 μm, and aspect ratio is 5 or more.