Syntheses and thermoelectric properties of Bi2Te3/Sb2Te3 bulk nanocomposites with laminated nanostructure

被引：279

作者：

Cao, Y. Q. ^{[1
]}

Zhao, X. B. ^{[1
]}

Zhu, T. J. ^{[1
]}

Zhang, X. B. ^{[1
]}

Tu, J. P. ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 14期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2900960

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanocomposites with constituent sizes of < 50 nm are considered as a promising approach to enhance the figure of merit of bulk thermoelectric materials. A simple route involving hydrothermal synthesis and hot pressing was used in this work to prepare Bi2Te3/Sb2Te3 bulk nanocomposites. It is shown that the composites have a laminated structure composed of Bi2Te3 and Sb2Te3 nanolayers with the thickness varying alternately between 5 and 50 nm. The transport measurements indicate that the nanoscale laminated structure improves the thermoelectric performance with the maximal dimensionless figure of merit of 1.47 for the nanocomposite hot pressed from Bi2Te3 and Sb2Te3 nanopowders. (C) 2008 American Institute of Physics.

引用

页数：3

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