Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit
Autor: | Mercouri G. Kanatzidis, Ctirad Uher, Timothy P. Hogan, Wei Chen, Fu Guo, Jeffrey S. Dyck, Kuei Fang Hsu, Efstathios K. Polychroniadis, Sim Loo |
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Rok vydání: | 2004 |
Předmět: | |
Zdroj: | ChemInform. 35 |
ISSN: | 1522-2667 0931-7597 |
Popis: | The conversion of heat to electricity by thermoelectric devices may play a key role in the future for energy production and utilization. However, in order to meet that role, more efficient thermoelectric materials are needed that are suitable for high-temperature applications. We show that the material system AgPb m SbTe 2+ m may be suitable for this purpose. With m = 10 and 18 and doped appropriately, n -type semiconductors can be produced that exhibit a high thermoelectric figure of merit material ZT max of ∼2.2 at 800 kelvin. In the temperature range 600 to 900 kelvin, the AgPb m SbTe 2+ m material is expected to outperform all reported bulk thermoelectrics, thereby earmarking it as a material system for potential use in efficient thermoelectric power generation from heat sources. |
Databáze: | OpenAIRE |
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