THERMOELECTRIC CONVERSION MODULE

A thermoelectric conversion module (100A) includes p-type and n-type thermoelectric conversion elements (110, 120) arranged between two stacked substrates (90). The p-type and n-type thermoelectric conversion elements (110, 120) include columnar p-type and n-type thermoelectric conversion portions (111, 121), insulators provided in side surfaces of the p-type and n-type thermoelectric conversion portions (111, 121), and diffusion preventing films (105) provided on top surface, the top surface different from the side surface of the p-type and n-type thermoelectric conversion portions (111, 121). Each stacked substrate (90) includes an interconnecting layer that electrically connects the p-type and n-type thermoelectric conversion portions (111, 121) through the diffusion preventing films (105), and a jointing material that joins the diffusion preventing films (105) and the interconnecting layer. Top surfaces of the diffusion preventing films (105) are projected from upper and lower top surfaces of each insulator in a direction connecting the upper and lower top surfaces of the p-type and n-type thermoelectric conversion portions (111, 121), and gap (130) is provided on each insulator in the direction.