Highly efficient bismuth telluride doped p-type Pb0.13Ge0.87Te for thermoelectric applications

被引：63

作者：

Gelbstein, Yaniv ^{[1
]}

Dashevsky, Zinovi ^{[1
]}

Dariel, Moshe P. ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Mat Engn, IL-84105 Beer Sheva, Israel

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2007年 / 1卷 / 06期

关键词：

Sodium chloride;

D O I：

10.1002/pssr.200701160

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi2Te3 doped p-type Pb0.13Ge0.87Te samples were prepared by hot pressing. We report on very high power factor values of similar to 30 mu W/cm K-2 at 500 degrees C, as were determined from Seebeck coefficient and electrical resistivity measurements. From dilatometric characterization, the phase transition from the low temperature rhombohedral to the high temperature cubic NaCl structures, takes place at 373 degrees C. This transition is accompanied by a continuous and gradual change of the lattice parameters, as was observed by hot stage XRD, suggesting a good mechanical durability upon thermal cycling and operating in large thermal gradients. Rhombohedral distortion of the cubic NaCl structure of Pb1-xGexTe upon cooling, characterized by changes in the interaxial angle alpha and the lattice parameter. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：232 / 234

页数：3

共 4 条

[1]

Fano V, 1995, CRC HDB THERMOELECTR, P257

[2] Powder metallurgical processing of functionally graded p-Pb1-xSnxTe materials for thermoelectric applications [J].