Preparation and Thermoelectric Properties of Nanoporous Bi2Te3-Based Alloys

被引：0
|
作者：
Y. H. Zhang
G. Y. Xu
F. Han
Z. Wang
C. C. Ge
机构：
[1] University of Science and Technology Beijing,Institute of Special Ceramics and Powder Metallurgy
[2] Academy of Equipment Command & Technology,undefined
来源：
Journal of Electronic Materials | 2010年 / 39卷
关键词：
Nanoporous structures; Bi; Te; -based alloys; spark plasma sintering; thermoelectric properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
n-Type nanoporous Bi2Te3-based thermoelectric materials with different porosity ratios have been prepared by spark plasma sintering (SPS). The microstructure and phase morphology have been analyzed by x-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM), and the thermoelectric properties of the SPS samples have been measured. Experimental results show that the nanoporous structures lying in the sheet layers and among the plate grains of the Bi2Te3 bulk material can lead to an increase in the Seebeck coefficient and a decrease in the thermal conductivity, thus leading to an enhanced figure of merit.
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页码：1741 / 1745
页数：4
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