Thermoelectric properties of I-doped n-type Bi2Te3-based material prepared by hydrothermal and subsequent hot pressing

被引：51

作者：

Wu, Fang ^{[1
,2
,3
,5
]}

Wang, Wei ^{[4
]}

Hu, Xing ^{[1
,2
]}

Tang, Mingsheng ^{[5
]}

机构：

[1] Zhengzhou Univ, Coll Phys Engn, Zhengzhou 450052, Peoples R China

[2] Zhengzhou Univ, Lab Mat Phys, Zhengzhou 450052, Peoples R China

[3] Henan Inst Finance & Banking, Coll Phys & Elect Engn, Zhengzhou 450053, Peoples R China

[4] Zhengzhou Inst Technol, Coll Informat Engn, Zhengzhou 450044, Peoples R China

[5] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450052, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2017年 / 27卷 / 02期

基金：

中国国家自然科学基金;

关键词：

n-type Bi2Te3; Element doping; Nanostructure; Hot pressing; Thermoelectric properties; FLOWER-LIKE NANOPOWDERS; NANOCOMPOSITES; NANOSTRUCTURES; ENHANCEMENT; PERFORMANCE; TELLURIDE; ALLOYS; POWER;

D O I：

10.1016/j.pnsc.2017.02.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

I-doped Bi2Te3-xIx (x= 0, 0.05, 0.1, 0.2) flower-like nanoparticles were synthesized by a hydrothermal method through a careful adjustment of the amount of ethylenediamine tetraacetic acid surfactant. The nanopowders of flower-like nanoparticles were hot-pressed into bulk pellets and the thermoelectric properties of the pellets were investigated. The results showed that I-doping decreased the electrical resistivity effectively, and the thermal conductivitives of the Bi2Te3-xIx bulk samples was lower because of the closer atomic mass of I compared to Te. As a result, a ZT value of 1.1 was attained at 448 K for the Bi2Te2.9I0.1 sample.

引用

页码：203 / 207

页数：5

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