[10a-N201-1~11] 9.4 Thermoelectric conversion

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[10a-N201-3] Fabrication of oxide-based (p × n)-type multilayered materials using LaCoO3 substitution systems.

〇(M2)Motoya Takenaka¹, Shogo Yoshida¹, Ryuji Okazaki¹ (1.Tokyo University of Science)

Keywords:

thermoelectric material,transverse thermoelectric conversion

In this study, we focused on the perovskite oxide LaCoO₃ with the aim of realising a high-temperature-stable transverse thermoelectric conversion material. LaCoO₃ allows for both p-type and n-type doping, and asymmetry arises in the electron and hole conduction processes due to the spin state blockade effect. Utilising this property, we fabricated La_1-xSr_xCoO₃ and LaCo_1-xTi_xO₃, and (p×n)-type multilayered materials by combining these. We also measured the transport coefficients and investigated the optimal conditions for thermoelectric performance.