Cubic AgPbmSbTe2+m:: Bulk thermoelectric materials with high figure of merit
Cubic AgPbmSbTe2+m:: Bulk thermoelectric materials with high figure of merit
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DOI：
10.1126/science.1092963
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发表时间：
2004-02-06
期刊：
影响因子：
56.9
通讯作者：
Kanatzidis, MG
中科院分区：
文献类型：
--
作者：
Hsu, KF;Loo, S;Kanatzidis, MG
通过热电装置将热转换为电可能在未来的能源生产和利用中发挥关键作用。然而，为了满足这一作用，需要适用于高温应用的更高效的热电材料。我们表明，材料系统AgPbm SbTe 2 +m可能适合于此目的。在m=10和18并适当掺杂的情况下，可以生产出在800开尔文下表现出类似于2.2的高热电优值材料ZT（max）的n型半导体。在600至900开尔文的温度范围内，AgPbm SbTe 2 +m材料预计将优于所有报道的块状热电体，从而将其指定为潜在用于从热源高效热电发电的材料系统。
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 AgPbm SbTe2+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 similar to2.2 at 800 kelvin. In the temperature range 600 to 900 kelvin, the AgPbm SbTe2+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.