LnPdSb (Ln = La, Gd):: Promising intermetallics with large carrier mobility for high performance p-type thermoelectric materials

被引:19
|
作者
Sekimoto, Takeyuki [1 ]
Kurosaki, Ken [1 ]
Muta, Hiroaki [1 ]
Yamanaka, Shinsuke [1 ]
机构
[1] Osaka Univ, Grad Sch Engn, Div Sustainable Energy & Environm Engn, Suita, Osaka 5650871, Japan
关键词
D O I
10.1063/1.2339886
中图分类号
O59 [应用物理学];
学科分类号
摘要
The authors studied the thermoelectric properties of LaPdSb and GdPdSb. The values of the thermoelectric power were positive and relatively large (60-100 mu V/K). The values of the electrical resistivity were on the order of 10(-4) Omega cm, which is unexpectedly low in view of the large values observed for the thermoelectric power. From the Hall effect measurements, the unusually low electrical resistivity was confirmed to be caused by the large carrier mobility. LaPdSb indicated a large power factor of 50 mu W/K-2 cm at 327 K and a large dimensionless figure of merit of 0.26 at around room temperature. (c) 2006 American Institute of Physics.
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页数:3
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