Thermoelectric properties of p-type Te-doped (Bi,Sb)2Te3 alloys by mechanical alloying and plasma activated sintering

被引：18

作者：

Fan, Xi'an ^{[1
]}

Yang, Junyou ^{[1
]}

Zhu, Wen ^{[1
]}

Bao, Siqian ^{[1
]}

Duan, Xingkai ^{[1
]}

Zhang, Qinqin ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Dies & Mould Technol, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 448卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

thermoelectric properties; (Bi; Sb)(2)Te-3; mechanical alloying; plasma activated sintering;

D O I：

10.1016/j.jallcom.2006.10.062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present work, p-type (Bi,Sb)(2)Te-3 alloys with excess Te addition were prepared by mechanical alloying and plasma activated sintering. A preferentially orientated microstructure with the basal planes (001) perpendicular to the pressing direction was formed, and the orientation factors of the (001) planes of the Bi0.5Sb1.5Te3 and Bi0.4Sb1.6Te3 alloys were 0.12 and 0.11, respectively. Effect of excess Te content on the thermoelectric properties of the (Bi,Sb)(2)Te-3 alloys was investigated and the figure of merit of the Bi0.4Sb1.6Te3 alloys decreased from 5.26 x 10(-3) to 4.44 x 10(-3) K-1 with increasing the amount of excess Te to 8 wt.%, this should be ascribed to the fact that the chemical composition of the 8 matrix phase displayed indifference with varying excess Te content and the presence of free Te second phase. (C) 2006 Elsevier B.V. All rights reserved.

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页码：308 / 312

页数：5

相关论文

共 20 条

[1] Preparation and thermoelectric properties of semiconducting Zn4Sb3 [J].

Caillat, T ;

Fleurial, JP ;

Borshchevsky, A .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1997, 58 (07) :1119-1125

[2] CsBi4Te6:: A high-performance thermoelectric material for low-temperature applications [J].

Chung, DY ;

Hogan, T ;

Brazis, P ;

Rocci-Lane, M ;

Kannewurf, C ;

Bastea, M ;

Uher, C ;

Kanatzidis, MG .

SCIENCE, 2000, 287 (5455) :1024-1027

[3] Microstructure and thermoelectric properties of n-type Bi2Te2.85Se0.15 prepared by mechanical alloying and plasma activated sintering [J].

Fan, X. A. ;

Yang, J. Y. ;

Zhu, W. ;

Yun, H. S. ;

Chen, R. G. ;

Bao, S. Q. ;

Duan, X. K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 420 (1-2) :256-259

[4] Characterization and thermoelectric properties of p-type 25%Bi2Te3-75% Sb2Te3 prepared via mechanical alloying and plasma activated sintering [J].

Fan, XA ;

Yang, JY ;

Chen, RG ;

Yun, HS ;

Zhu, W ;

Bao, SQ ;

Duan, XK .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2006, 39 (04) :740-745

[5] Microstructure and thermoelectric properties of extruded n-type 95%Bi2Te2-5%Bi2Se3 alloy along bar length [J].

Hong, SJ ;

Chun, BS .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :345-351

[6] Cubic AgPbmSbTe2+m:: Bulk thermoelectric materials with high figure of merit [J].

Hsu, KF ;

Loo, S ;

Guo, F ;

Chen, W ;

Dyck, JS ;

Uher, C ;

Hogan, T ;

Polychroniadis, EK ;

Kanatzidis, MG .

SCIENCE, 2004, 303 (5659) :818-821

[7] Effect of excess Te addition on the thermoelectric properties of the 20% Bi2Te3-80% Sb2Te3 single crystal and hot-pressed alloy [J].

Hyun, DB ;

Oh, TS ;

Hwang, JS ;

Shim, JD .

SCRIPTA MATERIALIA, 2001, 44 (03) :455-460

[8] Thermoelectric properties of textured p-type (Bi,Sb)2Te3 fabricated by spark plasma sintering [J].

Jiang, J ;

Chen, LD ;

Bai, SQ ;

Yao, Q ;

Wang, Q .

SCRIPTA MATERIALIA, 2005, 52 (05) :347-351

[9] TOPOTACTICAL REACTIONS WITH FERRIMAGNETIC OXIDES HAVING HEXAGONAL CRYSTAL STRUCTURES .1. [J].

LOTGERING, FK .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1959, 9 (02) :113-+

[10] Fabrication and characterization of Bi2Te3-Sb2Te3 based thermoelectric materials by powder-extrusion-sintering technique [J].

Min, BG ;

Jang, KW ;

Hyun, DB ;

Lee, DH .

PROCEEDINGS ICT'97 - XVI INTERNATIONAL CONFERENCE ON THERMOELECTRICS, 1997, :76-80