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Traceable Measurements of Seebeck Coefficients of Thermoelectric Materials by Using Noble Metal Thermocouples

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Abstract

The characterization of thermoelectric materials as reference materials for Seebeck coefficients at the Physikalisch-Technische Bundesanstalt (PTB) is based on the usage of gold/platinum differential thermocouples. In the case of thermoelectric materials containing silicon, the gold/platinum thermocouples are insufficient due to reactions with the silicon when the samples are at higher temperatures. To overcome this limitation and to expand the temperature range for the certification process, platinum/palladium thermocouples were incorporated in the measurement setup. This paper discusses the influence of the different differential thermocouples used for the measurement of the Seebeck coefficients. Results of a comparative investigation of Seebeck coefficient measurements of a metallic and two semiconducting reference materials in the temperature range from 300 K to 870 K are presented.

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Authors and Affiliations

  1. Physikalisch-Technische Bundesanstalt, Abbestrase 2-12, 10587, Berlin, Germany

    Sebastian Haupt & Frank Edler

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  1. Sebastian Haupt
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  2. Frank Edler
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Correspondence to Sebastian Haupt.

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Haupt, S., Edler, F. Traceable Measurements of Seebeck Coefficients of Thermoelectric Materials by Using Noble Metal Thermocouples. Int J Thermophys 39, 72 (2018). https://doi.org/10.1007/s10765-018-2394-z

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  • DOI: https://doi.org/10.1007/s10765-018-2394-z

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