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Thermoelectric performance of a metastable thin-film Heusler alloy

Author

Listed:
  • B. Hinterleitner

    (Technische Universität Wien
    Technische Universität Wien)

  • I. Knapp

    (Technische Universität Wien
    Technische Universität Wien)

  • M. Poneder

    (Technische Universität Wien
    Technische Universität Wien)

  • Yongpeng Shi

    (Institute of Metal Research, Chinese Academy of Sciences
    University of Science and Technology of China)

  • H. Müller

    (Technische Universität Wien)

  • G. Eguchi

    (Technische Universität Wien)

  • C. Eisenmenger-Sittner

    (Technische Universität Wien)

  • M. Stöger-Pollach

    (Technische Universität Wien
    University Service Centre for Transmission Electron Microscopy, Technische Universität Wien)

  • Y. Kakefuda

    (National Institute for Materials Science (NIMS))

  • N. Kawamoto

    (National Institute for Materials Science (NIMS))

  • Q. Guo

    (National Institute for Materials Science (NIMS)
    National Institute for Materials Science (NIMS))

  • T. Baba

    (National Institute for Materials Science (NIMS)
    National Institute for Materials Science (NIMS))

  • T. Mori

    (National Institute for Materials Science (NIMS)
    National Institute for Materials Science (NIMS)
    University of Tsukuba)

  • Sami Ullah

    (Institute of Metal Research, Chinese Academy of Sciences)

  • Xing-Qiu Chen

    (Institute of Metal Research, Chinese Academy of Sciences
    University of Science and Technology of China)

  • E. Bauer

    (Technische Universität Wien
    Technische Universität Wien)

Abstract

Thermoelectric materials transform a thermal gradient into electricity. The efficiency of this process relies on three material-dependent parameters: the Seebeck coefficient, the electrical resistivity and the thermal conductivity, summarized in the thermoelectric figure of merit. A large figure of merit is beneficial for potential applications such as thermoelectric generators. Here we report the thermal and electronic properties of thin-film Heusler alloys based on Fe2V0.8W0.2Al prepared by magnetron sputtering. Density functional theory calculations suggest that the thin films are metastable states, and measurements of the power factor—the ratio of the Seebeck coefficient squared divided by the electrical resistivity—suggest a high intrinsic figure of merit for these thin films. This may arise from a large differential density of states at the Fermi level and a Weyl-like electron dispersion close to the Fermi level, which indicates a high mobility of charge carriers owing to linear crossing in the electronic bands.

Suggested Citation

  • B. Hinterleitner & I. Knapp & M. Poneder & Yongpeng Shi & H. Müller & G. Eguchi & C. Eisenmenger-Sittner & M. Stöger-Pollach & Y. Kakefuda & N. Kawamoto & Q. Guo & T. Baba & T. Mori & Sami Ullah & Xin, 2019. "Thermoelectric performance of a metastable thin-film Heusler alloy," Nature, Nature, vol. 576(7785), pages 85-90, December.
  • Handle: RePEc:nat:nature:v:576:y:2019:i:7785:d:10.1038_s41586-019-1751-9
    DOI: 10.1038/s41586-019-1751-9
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    Cited by:

    1. Romo-De-La-Cruz, Cesar-Octavio & Chen, Yun & Liang, Liang & Paredes-Navia, Sergio A. & Wong-Ng, Winnie K. & Song, Xueyan, 2023. "Entering new era of thermoelectric oxide ceramics with high power factor through designing grain boundaries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 175(C).
    2. Igor Burmistrov & Rita Khanna & Nikolay Gorshkov & Nikolay Kiselev & Denis Artyukhov & Elena Boychenko & Andrey Yudin & Yuri Konyukhov & Maksim Kravchenko & Alexander Gorokhovsky & Denis Kuznetsov, 2022. "Advances in Thermo-Electrochemical (TEC) Cell Performances for Harvesting Low-Grade Heat Energy: A Review," Sustainability, MDPI, vol. 14(15), pages 1-17, August.
    3. Li, Guoneng & Zhu, Zhihao & Zheng, Youqu & Guo, Wenwen & Tang, Yuanjun & Ye, Chao, 2023. "Experiments on a powerful, ultra-clean, and low-noise-level swirl-combustion-powered micro thermoelectric generator," Energy, Elsevier, vol. 263(PB).
    4. Kim, Seonggon & Ko, Yunmo & Lee, Geun Jeong & Lee, Jae Won & Xu, Ronghuan & Ahn, Hyungseop & Kang, Yong Tae, 2023. "Sustainable energy harvesting from post-combustion CO2 capture using amine-functionalized solvents," Energy, Elsevier, vol. 267(C).
    5. He, Min & Wang, Enhua & Zhang, Yuanyin & Zhang, Wen & Zhang, Fujun & Zhao, Changlu, 2020. "Performance analysis of a multilayer thermoelectric generator for exhaust heat recovery of a heavy-duty diesel engine," Applied Energy, Elsevier, vol. 274(C).
    6. Li, Guoneng & Zheng, Youqu & Guo, Wenwen & Zhu, Dongya & Tang, Yuanjun, 2020. "Mesoscale combustor-powered thermoelectric generator: Experimental optimization and evaluation metrics," Applied Energy, Elsevier, vol. 272(C).

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