Simultaneous enhancement of power factor and suppression of thermal conductivity in bulk TlFe _{1.6} Se ₂ via embedded atomically thin FeSe layers

Xinyi He; Katsuma Ogata; Terumasa Tadano; Hidenori Hiramatsu; Toshio Kamiya; Takayoshi Katase

doi:10.1039/d6ta02075e

journal article·2026Open access

Simultaneous enhancement of power factor and suppression of thermal conductivity in bulk TlFe _1.6 Se ₂ via embedded atomically thin FeSe layers

Xinyi He, Katsuma Ogata, Terumasa Tadano, Hidenori Hiramatsu, Toshio Kamiya, Takayoshi Katase

Journal of Materials Chemistry A· Volume 14· Issue 37

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Source abstract

Abstract

Layered TlFe _1.6 Se ₂ , composed of FeSe monolayers confined within a bulk crystal, exhibits higher thermoelectric performance than bulk FeSe. Fe-vacancy ordering enhances the Seebeck coefficient, while low lattice thermal conductivity further improves ZT .

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Research context

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Iron-based superconductors research · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Materials and Structures Laboratory, Institute of Integrated Research, Institute of Science Tokyo, 4259 Nagatsuta, Midori, Yokohama 226-8501, Japan

Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan

Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

MDX Research Center for Element Strategy, Institute of Integrated Research, Institute of Science Tokyo, 4259 Nagatsuta, Midori, Yokohama 226-8501, Japan

Funding

Japan Society for the Promotion of Science · Kanagawa Institute of Industrial Science and Technology · Ministry of Education, Culture, Sports, Science and Technology · Tokyo Institute of Technology

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