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

doi:10.1063/1.4824353

Enhanced thermoelectric performance in the very low thermal conductivity Ag₂Se_0.5Te_0.5

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

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

In this letter, we report the high-temperature thermoelectric properties of Ag₂Se_0.5Te_0.5. 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 language	English (US)
Article number	143906
Journal	Applied Physics Letters
Volume	103
Issue number	14
DOIs	https://doi.org/10.1063/1.4824353
State	Published - Sep 30 2013

Funding

The authors would like to thank the U.S. Air Force Office of Scientific Research for supporting this work.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4824353

Cite this

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title = "Enhanced thermoelectric performance in the very low thermal conductivity Ag2Se0.5Te0.5",

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.",

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AU - Day, Tristan W.

AU - Brown, David R.

AU - Heinz, Nicholas A.

AU - Jeffrey Snyder, G.

N1 - Funding Information: The authors would like to thank the U.S. Air Force Office of Scientific Research for supporting this work.

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Y1 - 2013/9/30

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AB - 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.

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