High electrical power density from PbTe-based quantum-dot superlattice unicouple thermoelectric devices

被引：26

作者：

Harman, T. C. ^{[1
]}

Reeder, R. E. ^{[1
]}

Walsh, M. P. ^{[1
]}

LaForge, B. E. ^{[1
]}

Hoyt, C. D. ^{[1
]}

Turner, G. W. ^{[1
]}

机构：

[1] MIT, Lincoln Lab, Lexington, MA 02420 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 24期

关键词：

D O I：

10.1063/1.2209707

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe the first demonstration of PbTe-based, cross-plane quantum-dot superlattice (QDSL) unicouple thermoelectric generator devices fabricated from nanostructured, thick-film materials (similar to 100 mu m). Both n- and p-type QDSL materials were investigated. With similar to 220 K temperature difference across small thermoelements (similar to 95 mu m length, 4 mm(2) cross-sectional area), electrical power outputs up to 89 mW and power densities up to 2.2 W/cm(2) have been demonstrated for both n- and p-type materials. The devices consist of a substrate-free, bulklike slab of molecular beam epitaxy grown PbSeTe/PbTe QDSL material as the n- or p-type leg and a copper wire as the other p-type leg.

引用

页数：3

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