Solution-chemical syntheses of nano-structured Bi2Te3 and PbTe thermoelectric materials

被引：66

作者：

Ji, X. ^{[1
]}

Zhang, B.

Tritt, T. M.

Kolis, J. W.

Kumbhar, A.

机构：

[1] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA

[2] Clemson Univ, Dept Chem, Clemson, SC 29634 USA

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2007年 / 36卷 / 07期

关键词：

thermoelectric materials; nano-structured; Bi2Te3; PbTe; solution-chemical synthesis; reaction mechanism;

D O I：

10.1007/s11664-007-0156-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, nano-structured Bi2Te3 and PbTe thermoelectric materials were synthesized separately via solvothermal, hydrothermal and low-temperature aqueous chemical routes. X-ray diffraction (XRD), field-emission scanning-electron microscopy (FESEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDS) were used to analyze the powder products. Results showed that the as-prepared Bi2Te3 samples were all single-phased and consisted of irregular spherical granules with diameters of similar to 30 nm whereas the PbTe samples were mainly composed of well-crystallized cubic crystals with average size of approximately 100 nm. Some nanotubes and nanorods were found in Bi2Te3 and PbTe samples, respectively; these were identified as Bi2Te3 nanotubes and PbTe nanorods by EDS analysis. Possible reaction mechanisms for these syntheses are discussed in detail herein.

引用

页码：721 / 726

页数：6

共 14 条

[1] Thermoelectric cooling and power generation [J].