Tuning of the thermoelectric properties of one-dimensional material networks by electric double layer techniques using ionic liquids

Kazuhiro Yanagi, Shouhei Kanda, Yuki Oshima, Yoshimasa Kitamura, Hideki Kawai, Takahiro Yamamoto, Taishi Takenobu, Yusuke Nakai, Yutaka Maniwa

    Research output: Contribution to journalArticle

    78 Citations (Scopus)

    Abstract

    We report across-bandgap p-type and n-type control over the Seebeck coefficients of semiconducting single-wall carbon nanotube networks through an electric double layer transistor setup using an ionic liquid as the electrolyte. All-around gating characteristics by electric double layer formation upon the surface of the nanotubes enabled the tuning of the Seebeck coefficient of the nanotube networks by the shift in gate voltage, which opened the path to Fermi-level-controlled three-dimensional thermoelectric devices composed of one-dimensional nanomaterials.

    Original languageEnglish
    Pages (from-to)6437-6442
    Number of pages6
    JournalNano Letters
    Volume14
    Issue number11
    DOIs
    Publication statusPublished - 2014 Nov 12

    Keywords

    • electric double layer
    • ionic liquid
    • semiconducting
    • single-wall carbon nanotubes
    • Thermoelectrics

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Bioengineering
    • Chemistry(all)
    • Materials Science(all)
    • Mechanical Engineering

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  • Cite this

    Yanagi, K., Kanda, S., Oshima, Y., Kitamura, Y., Kawai, H., Yamamoto, T., Takenobu, T., Nakai, Y., & Maniwa, Y. (2014). Tuning of the thermoelectric properties of one-dimensional material networks by electric double layer techniques using ionic liquids. Nano Letters, 14(11), 6437-6442. https://doi.org/10.1021/nl502982f