Enhanced thermoelectric performance in the very low thermal conductivity Ag2Se0.5Te0.5

Fivos Drymiotis, Tristan W. Day, David R. Brown, Nicholas A. Heinz, G. Jeffrey Snyder

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

In this letter, we report the high-temperature thermoelectric properties of Ag2Se0.5Te0.5. We find that this particular composition displays very low thermal conductivity and competitive thermoelectric performance. Specifically, in the temperature region 520 K T 620 K, we observe non-hysteretic behavior between the heating and cooling curves and zT values ranging from 1.2 to 0.8. Higher zT values are observed at lower temperatures on cooling. Our results suggest that this alloy is conducive to high thermoelectric performance in the intermediate temperature range, and thus deserves further investigation.

Original languageEnglish (US)
Article number143906
JournalApplied Physics Letters
Volume103
Issue number14
DOIs
StatePublished - Oct 21 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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