Thermoelectric properties of p -type LiZnSb: Assessment of ab initio calculations

Eric S. Toberer, Andrew F. May, Cidney J. Scanlon, G. Jeffery Snyder

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Abstract

In response to theoretical calculations on the thermoelectric performance of LiZnSb, we report the pertinent transport properties between room temperature and 523 K. Nominal LiZnSb samples are found to be p -type, with a carrier concentration in the range (4-7) × 1020 cm-3. The thermoelectric figure of merit (zT) is found to be 0.02-0.08 at 523 K. Analysis of material transport parameters and previously reported ab initio calculations demonstrates that even with optimal doping, p -type LiZnSb is unlikely to achieve zT0.2 at 523 K. The accuracy of the high zT estimate (zT2) for n -type compositions from ab initio calculations is discussed within the current synthetic limits.

Original languageEnglish
Article number063701
JournalJournal of Applied Physics
Volume105
Issue number6
DOIs
StatePublished - 2009
Externally publishedYes

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