THERMOELECTRIC MATERIAL, THERMOELECTRIC MODULE, OPTICAL SENSOR, AND METHOD FOR MANUFACTURING THERMOELECTRIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To achieve more excellent thermoelectric characteristics in a thermoelectric material comprising a nanostructure.SOLUTION: A thermoelectric material includes a plurality of first semiconductor members having a first bandgap energy and a second semiconductor member having a second bandgap energy larger than the first bandgap energy. The first semiconductor members and the second semiconductor member are disposed so as to be alternatingly arranged in the carrier transport direction. The first semiconductor members have a width in the carrier transport direction of 5 nm or less, and the distance in the carrier transportation direction between two adjacent first semiconductor members is 3 nm or less.