Abstract: A stacked thermoelectric conversion module has a structure in which the following are stacked: a module for use in a high-temperature portion which is a thermoelectric conversion module in which a metal oxide is used as each thermoelectric conversion material or a thermoelectric conversion module in which a silicon-based alloy is used as each thermoelectric conversion material; and a module for use in a low-temperature portion which is a thermoelectric conversion module in which a bismuth-tellurium-based alloy is used as each thermoelectric conversion material. The stacked thermoelectric conversion module disposes a flexible heat-transfer material and, if necessary, a metal sheet between the module for use in a high-temperature portion and the module for use in a low-temperature portion. Also, the stacked thermoelectric conversion module disposes a cooling member on the cooling surface side of the module and a flexible heat-transfer material.

Abstract: The present invention provides a thermoelectric element comprising an electrically conductive substrate, a p-type thermoelectric material, and an n-type thermoelectric material; the p-type thermoelectric material being positioned on the substrate via an electrically conductive thermal buffer material, and the n-type thermoelectric material being positioned on the substrate via an electrically conductive thermal buffer material; wherein each thermoelectric material comprises a specific oxide and each electrically conductive thermal buffer material comprises an electrically conductive material having a thermal expansion coefficient between that of the thermoelectric material to which the thermal buffer material is bonded and that of the substrate. The invention also provides a thermoelectric module comprising a plurality of the thermoelectric elements.