Large Enhancements in the Thermoelectric Power Factor of Bulk PbTe at High Temperature by Synergistic Nanostructuring

被引：222

作者：

Sootsman, Joseph R. ^{[1
]}

Kong, Huijun ^{[2
]}

Uher, Ctirad ^{[2
]}

D'Angelo, Jonathan James ^{[3
]}

Wu, Chim-I ^{[3
]}

Hogan, Timothy P. ^{[3
]}

Caillat, Thierry ^{[4
]}

Kanatzidis, Mercouri G. ^{[1
]}

机构：

[1] NW Univ, Dept Chem, Evanston, IL 60208 USA

[2] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[3] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 45期

关键词：

composite materials; nanostructures; semiconductors; thermoelectric materials;

D O I：

10.1002/anie.200803934

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Graph Presented) Co-nanostructuring of PbTe with two kinds of metallic nanoparticles (Pb and Sb) can significantly increase its power factor at high temperatures (up to 87% at 700 K; see picture, ZT = figure of merit). The electrical conductivity is dramatically increased at high temperatures without degrading the thermopower. This emergent synergy results only when both Pb and Sb nanocrystals are present. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

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页码：8618 / 8622

页数：5

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