Thermoelectric properties of quantum dot chains

被引：13

作者：

Yadav, A. ^{[1
]}

Pipe, K. P. ^{[1
]}

Ye, W. ^{[2
]}

Goldman, R. S. ^{[2
]}

机构：

[1] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 09期

关键词：

SEMICONDUCTOR NANOWIRES; THERMAL-CONDUCTIVITY; ELECTRONIC-STRUCTURE; SUPERLATTICES; FIGURE; MERIT; FABRICATION; COMPOSITE; TRANSPORT; DEVICE;

D O I：

10.1063/1.3094029

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the thermoelectric properties of quantum dot (QD) chain nanocomposites in which the QDs are aligned to form chains. In both the InAs/GaAs and Ge/Si systems, we use a constant relaxation time approximation to calculate and compare the electrical conductivity, Seebeck coefficient, and thermoelectric power factor for QD chains, three-dimensional ordered QD arrays, random QD arrays, and bulk GaAs or Si. Our calculations suggest that the incorporation of QD chains into a matrix increases its thermoelectric power factor by a factor of 3 (1.5) for the InAs/GaAs (Ge/Si) system. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3094029]

引用

页数：7

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