Cubic AgPb m SbTe 2+ m : Bulk Thermoelectric Materials with High Figure of Merit
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- 6 February 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 303 (5659) , 818-821
- https://doi.org/10.1126/science.1092963
Abstract
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.Keywords
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