Unexpectedly low thermal conductivity in natural nanostructured bulk Ga2Te3

被引：74

作者：

Kurosaki, Ken ^{[2
]}

Matsumoto, Hideaki ^{[2
]}

Charoenphakdee, Anek ^{[2
]}

Yamanaka, Shinsuke ^{[2
]}

Ishimaru, Manabu ^{[1
]}

Hirotsu, Yoshihiko ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

[2] Osaka Univ, Grad Sch Engn, Osaka 5650871, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 01期

关键词：

D O I：

10.1063/1.2940591

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Here we introduce a promising thermoelectric material: Ga(2)Te(3) with unexpectedly low thermal conductivity, in which certain kinds of superlattice structures naturally form. Two-dimensional vacancy planes with approximately 3.5 nm intervals exist in Ga(2)Te(3), scattering phonons efficiently and leading to a very low thermal conductivity, comparable to its calculated minimum. Ga(2)Te(3) and related materials hold great promise in the field of thermoelectrics. (C) 2008 American Institute of Physics.

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页数：3

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