P-type and N-type Bi2Te3/PbTe functional gradient materials for thermoelectric power generation

被引：4

作者：

Lee, Kwang-Yong ^{[1
]}

Oh, Tae-Sung ^{[1
]}

机构：

[1] Hongik Univ, Dept Mat Sci & Engn, 72-1 Sangsu Dong, Seoul 121791, South Korea

来源：

PROGRESS IN POWDER METALLURGY, PTS 1 AND 2 | 2007年 / 534-536卷

关键词：

thermoelectric materials; bismuth telluride; lead telluride; functional gradient materials; figure of merit;

D O I：

10.4028/www.scientific.net/MSF.534-536.1493

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The p-type (Bi0.2Sb0.8)(2)TC3/(Pb0.7Sn0.3)Te functional gradient material (FGM) was fabricated by hot-pressing the mechanically alloyed (Bi0.2Sb0.8)(2)Te-3 and the 0.5 at% Na2Te-dopcd (Pb0.7Sn0.3)Te powders. Also, the n-type Bi-2(Te0.9Se0.1)(3)/PbTe FGM was processed by hot-pressing the mechanically alloyed Bi-2(Te0.9Se0.1)(3) and the 0.3 wt% Bi-doped PbTe powders. With Delta T larger than 300 degrees C, the p-type (Bi0.2Sb0.8)(2)Te-3/(Pb0.7Sn0.3)Te FGM exhibited larger thermoelectric output power than those of the (Bi0.2Sb0.8)(2)Te-3 and the 0.5 at% Na2Te-doped (Pb0.7Sn0.3)Te alloys. For the n-type Bi-2(Te0.9Sc0.1)(3)/PbTe FGM, the thermoelectric output power superior to those of the Bi-2(Te0.9Se0.1)(3) and the 0.3 wt% Bi-doped PbTe was predicted at Delta T larger than 300 degrees C.

引用

页码：1493 / +

页数：2

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