Hydrothermal synthesis and thermoelectric transport properties of PbTe nanocubes

被引：13
|
作者：
Zhou, Jian [1 ]
Chen, Zhonglin [2 ]
Sun, Zhimei [1 ,3 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Xiamen Univ, Dept Mat Sci & Engn, Coll Mat, Xiamen 361005, Peoples R China
[3] Beihang Univ, Int Res Ctr Integrated Computat Mat Engn, Int Res Inst Multidisciplinary Sci, Beijing 100191, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2015年 / 61卷
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
Hydrothermal synthesis; PbTe nanocubes; Hot-pressing; Interface scattering; ENHANCEMENT; PERFORMANCE; MECHANISM;
D O I：
10.1016/j.materresbull.2014.10.056
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A facile hydrothermal route for the synthesis of PbTe nanocubes without any organic solvent and surfactant has been developed. The sizes of as-prepared nanocubes are around 80-100 nm. The thermoelectric properties of nanostructured bulk PbTe by hot-pressing were investigated. Large Seebeck coefficient, while low electrical conductivity have been found, which are attributed to the energy filtering effect. In addition, lower thermal conductivity is obtained due to strong phonon scattering at the grain boundaries. The minimum thermal conductivity of 0.621 W m(-1) K-1 and the highest figure of merit Zr 0.78 at 450 K of the nanostructured bulk PbTe can be achieved. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：404 / 408
页数：5
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