Enhanced thermoelectric performance in the very low thermal conductivity Ag2Se0.5Te0.5
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- Fivos Drymiotis
- Department of Materials Science, California Institute of Technology , Pasadena, California 91125, USA
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- Tristan W. Day
- Department of Materials Science, California Institute of Technology , Pasadena, California 91125, USA
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- David R. Brown
- Department of Materials Science, California Institute of Technology , Pasadena, California 91125, USA
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- Nicholas A. Heinz
- Department of Materials Science, California Institute of Technology , Pasadena, California 91125, USA
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- G. Jeffrey Snyder
- Department of Materials Science, California Institute of Technology , Pasadena, California 91125, USA
Description
<jats:p>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.</jats:p>
Journal
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- Applied Physics Letters
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Applied Physics Letters 103 (14), 143906-, 2013-09-30
AIP Publishing
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Details 詳細情報について
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- CRID
- 1361418519512692864
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- ISSN
- 10773118
- 00036951
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- Data Source
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- Crossref