Cubic ReSTe as a high-performance thermoelectric material

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-18 DOI:10.1063/5.0268567

Haruka Matsumoto, Hiroto Isomura, Keita Kojima, Ryutaro Okuma, Hironori Ohshima, Chul-Ho Lee, Youichi Yamakawa, Yoshihiko Okamoto

引用次数: 0

Abstract

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.

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Cubic ReSTe是一种高性能热电材料

我们报道了未掺杂，w掺杂和sb掺杂的ReSTe在立方mosbr型结构中结晶的烧结样品的热电性质。所有样品均表现出p型热电性质。ReSTe和Re0.993W0.007STe表现出最大的无因次值ZT，在660 K时达到0.4。这种高性能归因于烧结样品的强自旋轨道耦合和低晶格热导率所实现的简并半导体态的大功率因数。此外，ReSTe的电子带色散在导带底部几乎是平坦的，这表明n型ReSTe有望表现出比p型ReSTe更高的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.