Thermoelectric properties of Tl-X-Te (X=Ge, Sn, and Pb) compounds with low lattice thermal conductivity

被引：36

作者：

Kosuga, A ^{[1
]}

Kurosaki, K ^{[1
]}

Muta, H ^{[1
]}

Yamanaka, S ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Sustainable Energy & Environm Engn, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 06期

关键词：

D O I：

10.1063/1.2181427

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We prepared polycrystalline-sintered samples of Tl2GeTe3, Tl4SnTe3, and Tl4PbTe3 and evaluated their thermoelectric properties. Altho ugh the electrical properties of these compounds were not optimized, the dimensionless figure of merit ZT was relatively high, i.e., 0.74 at 673 K for Tl4SnTe3, 0.71 at 673 K for Tl4PbTe3, and 0.29 at 473 K for Tl2GeTe3, due to the very low lattice thermal conductivity of the compounds. Low lattice thermal conductivity appears to be closely related to the weak bonding of atoms and complex crystal structures of these compounds. (c) 2006 American Institute of Physics.

引用

页数：4

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