Effect of nanoparticle scattering on thermoelectric power factor

被引：124

作者：

Zebarjadi, Mona ^{[1
]}

Esfarjani, Keivan ^{[1
,2
]}

Shakouri, Ali ^{[1
]}

Bahk, Je-Hyeong ^{[3
]}

Bian, Zhixi ^{[1
]}

Zeng, Gehong ^{[3
]}

Bowers, John ^{[3
]}

Lu, Hong ^{[4
]}

Zide, Joshua ^{[5
]}

Gossard, Art ^{[4
]}

机构：

[1] Univ Calif Santa Cruz, Dept Elect Engn, Santa Cruz, CA 95064 USA

[2] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

[3] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[5] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 20期

关键词：

aluminium compounds; electrical conductivity; electron density; erbium compounds; gallium compounds; III-V semiconductors; indium compounds; nanoparticles; Seebeck effect; thermoelectric power;

D O I：

10.1063/1.3132057

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of nanoparticles on the thermoelectric power factor is investigated using the relaxation time approximation. The partial-wave technique is used for calculating the nanoparticle scattering cross section exactly. We validate our model by comparing its results to the experimental data obtained for ErAs:InGaAlAs samples. We use the theory to maximize the power factor with respect to nanoparticle and electron concentrations as well as the barrier height. We found that at the optimum of the power factor, the electron concentration is usually higher in the sample with nanoparticles, implying that Seebeck is usually unchanged and conductivity is increased.

引用

页数：3

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