Cubic ReSTe as a high-performance thermoelectric material
We report thermoelectric properties of sintered samples of undoped, W-doped, and Sb-doped ReSTe crystallized in a cubic MoSBr-type structure. All samples exhibited p-type thermoelectric properties. ReSTe and Re0.993W0.007STe exhibited the largest dimensionless figure of merit ZT, reaching 0.4 at 660 K. This high performance is attributed to a large power factor owing to the degenerate semiconducting state realized by the strong spin–orbit coupling and low lattice thermal conductivity of the sintered samples. Furthermore, electronic band dispersion of ReSTe is almost flat at the bottom of the conduction band, suggesting that n-type ReSTe is expected to exhibit much higher performance than p-type ReSTe.
Authors
- Hironori Ohshima (ORCID: https://orcid.org/0000-0001-7255-9741)
- Yoshihiko Okamoto (ORCID: https://orcid.org/0000-0003-4468-0522)
- Ryutaro Okuma (ORCID: https://orcid.org/0000-0002-4231-3190)
- Youichi Yamakawa (ORCID: https://orcid.org/0000-0002-6456-381X)
- K. Kojima (ORCID: https://orcid.org/0000-0001-7271-3198)
- Chul‐Ho Lee (ORCID: https://orcid.org/0000-0001-6918-976X)
- H. Matsumoto
- Hiroto Isomura
Institutions
- Nagoya University (JP)
- National Institute of Advanced Industrial Science and Technology (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-06-16
- DOI
- https://doi.org/10.1063/5.0268567
- Citations
- 1
- Primary Topic
- Advanced Thermoelectric Materials and Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- Japan Society for the Promotion of Science
- Japan Science and Technology Agency
- JST-Mirai Program