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Initial Assessment of the Thermoelectric Properties for the Mixed System K2−xRbxBi8Se13

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Abstract

In previous studies we have investigated the thermoelectric properties of undoped and doped compositions of β-K2Bi8Se13. The attempt to substitute Rb for K resulted in a different structure type, but with potentially useful thermal properties. In this paper the results of measuring the thermoelectric properties of small crystalline samples for K2−xRbxBi8Se13 solid solutions are reported for the compositional ranges with 0 ≤ × ≤ 1 and with 1.8 ≤ × ≤ 2. The presence of rubidium provides a significant improvement in the thermopower but has much less of an effect on the electrical conductivity. The combined results are reflected in the power factor behavior as a function of temperature.

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Authors and Affiliations

  1. Dept. of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208-3118, USA

    John R. Ireland & C. R. Kannewurf

  2. Dept. of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing, MI, 48824-1322, USA

    Theodora Kyratsi & Mercouri G. Kanatzidis

Authors
  1. John R. Ireland
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  2. Theodora Kyratsi
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  3. Mercouri G. Kanatzidis
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  4. C. R. Kannewurf
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Ireland, J.R., Kyratsi, T., Kanatzidis, M.G. et al. Initial Assessment of the Thermoelectric Properties for the Mixed System K2−xRbxBi8Se13. MRS Online Proceedings Library 691, 134 (2001). https://doi.org/10.1557/PROC-691-G13.4

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  • DOI: https://doi.org/10.1557/PROC-691-G13.4

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