Threefold enhancement of the thermoelectric figure of merit for pressure tuned Sr8Ga16Ge30

J. F. Meng, N. V.Chandra Shekar, J. V. Badding, G. S. Nolas

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Semiconducting germanium clathrates are thermoelectric materials with cage-like structures that exhibit "phonon glass, electron crystal" behavior. We report an improvement by at least a factor of 3 in the dimensionless thermoelectric figure of merit for the clathrate semiconductor Sr8Ga16Ge30 upon compression to 7 GPa. These results suggest that there is potential for further improving the thermoelectric properties of this material at ambient pressure by chemical or other methods.

Original languageEnglish (US)
Pages (from-to)1730-1733
Number of pages4
JournalJournal of Applied Physics
Volume89
Issue number3
DOIs
StatePublished - Feb 1 2001

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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