Thermopower enhancement in lead telluride nanostructures

被引：502

作者：

Heremans, JP ^{[1
]}

Thrush, CM ^{[1
]}

Morelli, DT ^{[1
]}

机构：

[1] Delphi Res Labs, Shelby Township, MI 48315 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.70.115334

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate an enhancement in the thermopower of PbTe nanostructures with grain sizes on the order of 30-50 nm, relative to bulk. The enhancement is similar in magnitude to that reported in the literature for PbTe/PbSexTe1-x quantum dot superlattices. We provide proof, based on measurements of the transverse Nernst effect, that the enhancement has its origin in electron energy filtering induced by an alteration of the scattering mechanism.

引用

页码：115334 / 1

页数：5

共 16 条

[1]

CHERNIK IA, 1968, SOV PHYS SEMICOND+, V2, P645

[2]

Cullity B.D., 1956, ELEMENTS XRAY DIFFRA

[3] High figure of merit in Ce-filled skutterudites [J].

Fleurial, JP ;

Borshchevsky, A ;

Caillat, T ;

Morelli, DT ;

Meisner, GP .

PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS, 1996, :91-95

[4] Quantum dot superlattice thermoelectric materials and devices [J].

Harman, TC ;

Taylor, PJ ;

Walsh, MP ;

LaForge, BE .

SCIENCE, 2002, 297 (5590) :2229-2232

[5] Thermoelectric power of bismuth nanocomposites [J].

Heremans, JP ;

Thrush, CM ;

Morelli, DT ;

Wu, MC .

PHYSICAL REVIEW LETTERS, 2002, 88 (21) :4

[6]

HEREMANS P, 2004, THERMOELECTRIC MAT 2, P3

[7] EFFECT OF QUANTUM-WELL STRUCTURES ON THE THERMOELECTRIC FIGURE OF MERIT [J].

HICKS, LD ;

DRESSELHAUS, MS .

PHYSICAL REVIEW B, 1993, 47 (19) :12727-12731

[8] 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

[9] Multilayer thermionic refrigeration [J].

Mahan, GD ;

Woods, LM .

PHYSICAL REVIEW LETTERS, 1998, 80 (18) :4016-4019

[10] RECENT ADVANCES IN LEAD-CHALCOGENIDE DIODE-LASERS [J].

PREIER, H .

APPLIED PHYSICS, 1979, 20 (03) :189-206

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