Improving thermoelectric performance of caged compounds through light-element filling
Heavy elements filling have been considered the most effective way to improve the thermoelectric performance of caged compounds such as CoSb3 by reducing kL. Here, we show an opposite example of filling a light element, Na, into CoSb3 for obtaining high thermoelectric figure of merit ZT.ZT=1.25 at 8...
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| Veröffentlicht in: | Applied physics letters 2009-07, Vol.95 (4) |
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| container_title | Applied physics letters |
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| creator | Pei, Y. Z. Yang, Jiong Chen, L. D. Zhang, W. Salvador, J. R. Yang, Jihui |
| description | Heavy elements filling have been considered the most effective way to improve the thermoelectric performance of caged compounds such as CoSb3 by reducing kL. Here, we show an opposite example of filling a light element, Na, into CoSb3 for obtaining high thermoelectric figure of merit ZT.ZT=1.25 at 850 K for Na0.48Co4Sb12 is one of the highest values among all reported single-element-filled CoSb3. The Na-filling scatters phonons less effectively but it results in relatively high mobility thus large power factor. This most likely comes from the extra electronic states near the Fermi level induced by Na. |
| doi_str_mv | 10.1063/1.3182800 |
| format | Article |
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Here, we show an opposite example of filling a light element, Na, into CoSb3 for obtaining high thermoelectric figure of merit ZT.ZT=1.25 at 850 K for Na0.48Co4Sb12 is one of the highest values among all reported single-element-filled CoSb3. The Na-filling scatters phonons less effectively but it results in relatively high mobility thus large power factor. This most likely comes from the extra electronic states near the Fermi level induced by Na.</abstract><doi>10.1063/1.3182800</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2009-07, Vol.95 (4) |
| issn | 0003-6951 1077-3118 |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Improving thermoelectric performance of caged compounds through light-element filling |
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