A thermoelectric assembly, comprising a thermoelectric conversion module and heat supply units, wherein the thermoelectric conversion module comprises a p-type thermoelectric conversion material and an n-type thermoelectric conversion material, each of which is a silicide material based on a binary system; wherein the thermoelectric assembly includes multiple thermoelectric conversion modules, wherein the heat supply units are disposed on an upper surface and a lower surface in a thickness direction of the thermoelectric conversion module, are configured to impart a temperature difference to the thermoelectric conversion module, and are configured to supply heat for power generation by Seebeck effect of the p-type and n-type thermoelectric conversion materials (102, 103) and cooling source discharging heat, wherein the p-type and n-type thermoelectric conversion materials (102, 103) have a cross-sectional area ratio t satisfying: the p-type thermoelectric conversion material: the n-type thermoelectric conversion material = t:(1-t), characterized in that 0.5 < t < 0.7, and a length L of a thermoelectric element satisfying L ≤ 5 mm, wherein, when cross-sectional areas where electrodes for discharging the heat from the p-type thermoelectric conversion material having a cross-sectional area A p and the n-type thermoelectric conversion material having a cross-sectional area A n are in contact with the cooling source are A p ' and A n ', respectively, the thermoelectric conversion module has an area ratio of A p '/A p ≥ 0.73 and A n '/A n ≥ 0.73. wherein the thermoelectric conversion module comprises a p-type thermoelectric conversion material and an n-type thermoelectric conversion material, each of which is a silicide material based on a binary system; wherein the thermoelectric assembly includes multiple thermoelectric conversion modules, wherein the heat supply units are disposed on an upper surface and a lower surface in a thickness direction of the thermoelectric conversion module, are configured to impart a temperature difference to the thermoelectric conversion module, and are configured to supply heat for power generation by Seebeck effect of the p-type and n-type thermoelectric conversion materials (102, 103) and cooling source discharging heat, wherein the p-type and n-type thermoelectric conversion materials (102, 103) have a cross-sectional area ratio t satisfying: the p-type thermoelectric conversion material: the n-type thermoelectric conversion material = t:(1-t), characterized in that 0.5 < t < 0.7, and a length L of a thermoelectric element satisfying L ≤ 5 mm, wherein, when cross-sectional areas where electrodes for discharging the heat from the p-type thermoelectric conversion material having a cross-sectional area A p and the n-type thermoelectric conversion material having a cross-sectional area A n are in contact with the cooling source are A p ' and A n ', respectively, the thermoelectric conversion module has an area ratio of A p '/A p ≥ 0.73 and A n '/A n ≥ 0.73. the n-type thermoelectric conversion material = t:(1-t), characterized in that 0.5 < t < 0.7, and a length L of a thermoelectric element satisfying L ≤ 5 mm, wherein, when cross-sectional areas where electrodes for discharging the heat from the p-type thermoelectric conversion material having a cross-sectional area A p and the n-type thermoelectric conversion material having a cross-sectional area A n are in contact with the cooling source are A p ' and A n ', respectively, the thermoelectric conversion module has an area ratio of A p '/A p ≥ 0.73 and A n '/A n ≥ 0.73.