High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11

Eric S. Toberer, Shawna R. Brown, Teruyuki Ikeda, Susan M. Kauzlarich, G. Jeffrey Snyder

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

Lanthanum doping of the high-temperature p -type thermoelectric material Yb14 Mn Sb11 enhances the figure of merit (zT) through carrier concentration tuning. This is achieved by substituting La3+ on the Yb2+ site to reduce the free hole concentration as expected from the change in valence. The high-temperature transport properties (Seebeck coefficient, electrical resistivity, Hall mobility, and thermal conductivity) of Yb13.6 La0.4 Mn Sb11 are explained by the change in carrier concentration using a simple rigid parabolic band model, similar to that found in Yb14 Mn1-x Alx Sb11. Together, use of these two dopant sites enables the partial decoupling of electronic and structural properties in Yb14 Mn Sb11 -based materials.

Original languageEnglish (US)
Article number062110
JournalApplied Physics Letters
Volume93
Issue number6
DOIs
StatePublished - 2008

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lanthanum
thermoelectric materials
Seebeck effect
figure of merit
decoupling
thermal conductivity
transport properties
tuning
valence
electrical resistivity
electronics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Toberer, E. S., Brown, S. R., Ikeda, T., Kauzlarich, S. M., & Snyder, G. J. (2008). High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11. Applied Physics Letters, 93(6), [062110]. https://doi.org/10.1063/1.2970089

High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11. / Toberer, Eric S.; Brown, Shawna R.; Ikeda, Teruyuki; Kauzlarich, Susan M.; Snyder, G. Jeffrey.

In: Applied Physics Letters, Vol. 93, No. 6, 062110, 2008.

Research output: Contribution to journalArticle

Toberer, ES, Brown, SR, Ikeda, T, Kauzlarich, SM & Snyder, GJ 2008, 'High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11', Applied Physics Letters, vol. 93, no. 6, 062110. https://doi.org/10.1063/1.2970089
Toberer ES, Brown SR, Ikeda T, Kauzlarich SM, Snyder GJ. High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11. Applied Physics Letters. 2008;93(6). 062110. https://doi.org/10.1063/1.2970089
Toberer, Eric S. ; Brown, Shawna R. ; Ikeda, Teruyuki ; Kauzlarich, Susan M. ; Snyder, G. Jeffrey. / High thermoelectric efficiency in lanthanum doped Yb14 Mn Sb11. In: Applied Physics Letters. 2008 ; Vol. 93, No. 6.
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