An apparatus for concurrent measurement of thermoelectric material parameters

被引：24

作者：

Kallaher, R. L. ^{[1
]}

Latham, C. A. ^{[1
]}

Sharifi, F. ^{[1
]}

机构：

[1] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 01期

关键词：

RESISTIVITY MEASUREMENTS; SEEBECK COEFFICIENT; BISMUTH TELLURIDE; TEMPERATURE; MERIT; THERMOPOWER; DEVICES; FIGURE; HEAT;

D O I：

10.1063/1.4789311

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe an apparatus which concurrently and independently measures the parameters determining thermoelectric material conversion efficiency: the Seebeck coefficient, thermal conductivity, and electrical resistivity. The apparatus is designed to characterize thermoelectric materials which are technologically relevant for waste heat energy conversion, and may operate from room temperature to 400 degrees C. It is configured so the heat flux is axially confined along two boron nitride rods of known thermal conductance. The Seebeck coefficient and thermal conductivity are obtained in steady-state using a differential technique, while the electrical resistivity is obtained using a four-point lock-in amplification method. Measurements on the newly developed NIST Seebeck standard reference material are presented in the temperature range from 50 degrees C to 250 degrees C. [http://dx.doi.org/10.1063/1.4789311]

引用

页数：7