Advanced Materials

Chalcopyrite CuGaTe2: A High-Efficiency Bulk Thermoelectric Material

Authors

  • Theerayuth Plirdpring,

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
    2. Thermoelectric and Nanotechnology Research Center, Faculty of Science and Technology, Rajamangala University of Technology Suvarnabhumi, Huntra Phranakhon Si Ayutthaya 13000, Thailand
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  • Ken Kurosaki,

    Corresponding author
    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
    • Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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  • Atsuko Kosuga,

    1. Nanoscience and Nanotechnology Research Center, Research Organization for the 21st Century, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai-shi, Osaka 599-8570, Japan
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  • Tristan Day,

    1. Department of Materials Science, California Institute of Technology, Pasadena, CA 91125, USA
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  • Samad Firdosy,

    1. Jet Propulsion Laboratory, Pasadena, CA 91109, USA
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  • Vilupanur Ravi,

    1. Jet Propulsion Laboratory, Pasadena, CA 91109, USA
    2. California State Polytechnic University, Pomona, CA 91768, USA
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  • G. Jeffrey Snyder,

    1. Department of Materials Science, California Institute of Technology, Pasadena, CA 91125, USA
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  • Adul Harnwunggmoung,

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
    2. Thermoelectric and Nanotechnology Research Center, Faculty of Science and Technology, Rajamangala University of Technology Suvarnabhumi, Huntra Phranakhon Si Ayutthaya 13000, Thailand
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  • Tohru Sugahara,

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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  • Yuji Ohishi,

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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  • Hiroaki Muta,

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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  • Shinsuke Yamanaka

    1. Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
    2. Research Institute of Nuclear Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
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Abstract

CuGaTe2 with a chalcopyrite structure demonstrates promising thermoelectric properties. The maximum figure of merit ZT is 1.4 at 950 K. CuGaTe2 and related chalcopyrites are a new class of high-efficiency bulk thermoelectric material for high-temperature applications.

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