Filled skutterudite antimonides: A new class of thermoelectric materials
Filled skutterudite antimonides: A new class of thermoelectric materials
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DOI：
10.1126/science.272.5266.1325
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发表时间：
1996-05-31
期刊：
影响因子：
56.9
通讯作者：
Williams, RK
中科院分区：
文献类型：
--
作者：
Sales, BC;Mandrus, D;Williams, RK
已经合成了一类热电材料，其热电品质因数ZT（其中T是温度，Z是热功率、电阻率和热导率的函数）在800开尔文下接近1。虽然这些材料尚未优化，但该值与任何先前研究的热电材料获得的最佳ZT值相当。计算表明，优化的材料应该具有1.4的ZT值。这些三元半导体具有通式RM（4）X（12）（其中R是镧、铈、镨、钕或铕; M是铁、钌或锇; X是磷、砷或锑），并且代表了制造改进的热电材料的新方法。在CeFe_（4-x）Co_xSb_（12）或LaFe_（4-x）Co_xSb_（12）（0 <x <4）组成范围内的几种合金具有大的ZT值。
A class of thermoelectric materials has been synthesized with a thermoelectric figure of merit ZT(where T is temperature and Z is a function of thermopower, electrical resistivity, and thermal conductivity) near 1 at 800 kelvin. Although these materials have not been optimized, this Value is comparable to the best ZT values obtained for any previously studied thermoelectric material. Calculations indicate that the optimized material should have ZT values of 1.4. These ternary semiconductors have the general formula RM(4)X(12) (where R is lanthanum, cerium, praseodymium, neodymium, or europium; M is iron, ruthenium, or osmium; and X is phosphorus, arsenic, or antimony) and represent a new approach to creating improved thermoelectric materials. Several alloys in the compositionrange CeFe4-xCoxSb12 or LaFe4-xCoxSb12 (0 < x < 4) have large values of ZT.