Abstract
The thermoelectric device of oxide p-n coupled element of NaCo1.7Cu0.3O4 and Ba0.2Sr0.8PbO3 has been fabricated using direct joining between p-type and n-type. Because of unwanted reaction between the two p- and n-type oxides, the diffusion barrier of Au foil was used and the device was stable and showed no appreciable contact resistance at the junction after the thermal cycle at 1000 K in air. The TE maximum power from the device was 12.5 mW when the temperatures of the hot and cold side of the device were 1045 K and 539 K, respectively. The device showed neither appreciable contact resistance at the junction nor changes in thermopower, after the high-temperature durability test in air.
