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Effects of temperature dependent chemical potential on the Seebeck coefficient of TiS2 thermoelectric material

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Abstract

The relation between chemical potential and Seebeck coefficient was investigated by using high-resolution angle resolved photoemission spectroscopy. The temperature dependence of chemical potential was experimentally determined for the n-type TiS2 thermoelectric material and compared with the measured Seebeck coefficient. We found that the temperature dependence of chemical potential of TiS2 is significantly large, and its effect on Seebeck coefficient is not negligible. This fact strongly indicates that the temperature dependence of chemical potential has to be properly understood to construct the guiding principle for developing new, practical thermoelectric materials.

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Authors and Affiliations

  1. EcoTopia Science Institute, Nagoya University, 464-8603, Furo-cho, Chikusa-ku, Nagoya, Japan

    Tsunehiro Takeuchi

  2. Department of Crystalline Materials Science, Nagoya University, 464-8603, Furo-cho, Chikusa-ku, Nagoya, Japan

    Tsunehiro Takeuchi, Akio Yamamoto & Koto Ogawa

Authors
  1. Tsunehiro Takeuchi
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  2. Akio Yamamoto
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  3. Koto Ogawa
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Takeuchi, T., Yamamoto, A. & Ogawa, K. Effects of temperature dependent chemical potential on the Seebeck coefficient of TiS2 thermoelectric material. MRS Online Proceedings Library 1314, 604 (2011). https://doi.org/10.1557/opl.2011.513

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