Cross-plane Seebeck coefficient of ErAs:InGaAs/InGaAlAs superlattices

Gehong Zeng; Joshua M.O. Zide; Woochul Kim; John E. Bowers; Arthur C. Gossard; Zhixi Bian; Yan Zhang; Ali Shakouri; Suzanne L. Singer; Arun Majumdar

doi:10.1063/1.2433751

Cross-plane Seebeck coefficient of ErAs:InGaAs/InGaAlAs superlattices

Gehong Zeng, Joshua M.O. Zide, Woochul Kim, John E. Bowers, Arthur C. Gossard, Zhixi Bian, Yan Zhang, Ali Shakouri, Suzanne L. Singer, Arun Majumdar

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

We characterize cross-plane and in-plane Seebeck coefficients for ErAs:InGaAsInGaAlAs superlattices with different carrier concentrations using test patterns integrated with microheaters. The microheater creates a local temperature difference, and the cross-plane Seebeck coefficients of the superlattices are determined by a combination of experimental measurements and finite element simulations. The cross-plane Seebeck coefficients are compared to the in-plane Seebeck coefficients and a significant increase in the cross-plane Seebeck coefficient over the in-plane Seebeck coefficient is observed. Differences between cross-plane and in-plane Seebeck coefficients decrease as the carrier concentration increases, which is indicative of heterostructure thermionic emission in the cross-plane direction.

Original language	English
Article number	034502
Journal	Journal of Applied Physics
Volume	101
Issue number	3
DOIs	https://doi.org/10.1063/1.2433751
Publication status	Published - 2007

Bibliographical note

Funding Information:
The authors acknowledge useful discussions with Dr. Mihal Gross. This work is supported by the Office of Naval Research Thermionic Energy Conversion Center MURI.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.2433751

Cite this

@article{7df66698af9941a293bb9a0cc90dd897,

title = "Cross-plane Seebeck coefficient of ErAs:InGaAs/InGaAlAs superlattices",

abstract = "We characterize cross-plane and in-plane Seebeck coefficients for ErAs:InGaAsInGaAlAs superlattices with different carrier concentrations using test patterns integrated with microheaters. The microheater creates a local temperature difference, and the cross-plane Seebeck coefficients of the superlattices are determined by a combination of experimental measurements and finite element simulations. The cross-plane Seebeck coefficients are compared to the in-plane Seebeck coefficients and a significant increase in the cross-plane Seebeck coefficient over the in-plane Seebeck coefficient is observed. Differences between cross-plane and in-plane Seebeck coefficients decrease as the carrier concentration increases, which is indicative of heterostructure thermionic emission in the cross-plane direction.",

author = "Gehong Zeng and Zide, {Joshua M.O.} and Woochul Kim and Bowers, {John E.} and Gossard, {Arthur C.} and Zhixi Bian and Yan Zhang and Ali Shakouri and Singer, {Suzanne L.} and Arun Majumdar",

note = "Funding Information: The authors acknowledge useful discussions with Dr. Mihal Gross. This work is supported by the Office of Naval Research Thermionic Energy Conversion Center MURI.",

year = "2007",

doi = "10.1063/1.2433751",

language = "English",

volume = "101",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "3",

}

TY - JOUR

T1 - Cross-plane Seebeck coefficient of ErAs:InGaAs/InGaAlAs superlattices

AU - Zeng, Gehong

AU - Zide, Joshua M.O.

AU - Kim, Woochul

AU - Bowers, John E.

AU - Gossard, Arthur C.

AU - Bian, Zhixi

AU - Zhang, Yan

AU - Shakouri, Ali

AU - Singer, Suzanne L.

AU - Majumdar, Arun

N1 - Funding Information: The authors acknowledge useful discussions with Dr. Mihal Gross. This work is supported by the Office of Naval Research Thermionic Energy Conversion Center MURI.

PY - 2007

Y1 - 2007

N2 - We characterize cross-plane and in-plane Seebeck coefficients for ErAs:InGaAsInGaAlAs superlattices with different carrier concentrations using test patterns integrated with microheaters. The microheater creates a local temperature difference, and the cross-plane Seebeck coefficients of the superlattices are determined by a combination of experimental measurements and finite element simulations. The cross-plane Seebeck coefficients are compared to the in-plane Seebeck coefficients and a significant increase in the cross-plane Seebeck coefficient over the in-plane Seebeck coefficient is observed. Differences between cross-plane and in-plane Seebeck coefficients decrease as the carrier concentration increases, which is indicative of heterostructure thermionic emission in the cross-plane direction.

AB - We characterize cross-plane and in-plane Seebeck coefficients for ErAs:InGaAsInGaAlAs superlattices with different carrier concentrations using test patterns integrated with microheaters. The microheater creates a local temperature difference, and the cross-plane Seebeck coefficients of the superlattices are determined by a combination of experimental measurements and finite element simulations. The cross-plane Seebeck coefficients are compared to the in-plane Seebeck coefficients and a significant increase in the cross-plane Seebeck coefficient over the in-plane Seebeck coefficient is observed. Differences between cross-plane and in-plane Seebeck coefficients decrease as the carrier concentration increases, which is indicative of heterostructure thermionic emission in the cross-plane direction.

UR - http://www.scopus.com/inward/record.url?scp=33847091138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33847091138&partnerID=8YFLogxK

U2 - 10.1063/1.2433751

DO - 10.1063/1.2433751

M3 - Article

AN - SCOPUS:33847091138

SN - 0021-8979

VL - 101

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 3

M1 - 034502

ER -

Cross-plane Seebeck coefficient of ErAs:InGaAs/InGaAlAs superlattices

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this