An alternative approach to predict Seebeck coefficients: Application to La3−xTe4

Yi Wang; Xiaoyu Chong; Yong Jie Hu; Shun Li Shang; Fivos R. Drymiotis; Samad A. Firdosy; Kurt E. Star; Jean Pierre Fleurial; Vilupanur A. Ravi; Long Qing Chen; Zi Kui Liu

doi:10.1016/j.scriptamat.2019.05.014

An alternative approach to predict Seebeck coefficients: Application to La_3−xTe₄

Yi Wang, Xiaoyu Chong, Yong Jie Hu, Shun Li Shang, Fivos R. Drymiotis, Samad A. Firdosy, Kurt E. Star, Jean Pierre Fleurial, Vilupanur A. Ravi, Long Qing Chen, Zi Kui Liu

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

14 Scopus citations

Abstract

A thermodynamic understanding of Seebeck coefficient was demonstrated in terms of electrochemical potential. It divided the contributions to the Seebeck coefficient into two contributions: the effect of thermal electronic excitations due to Fermi distribution and the effect of charge carrier gradient due to thermal expansion. The procedure is illustrated within the rigid band approximation in terms of the electronic density-of-states and the quasiharmonic approximation in terms of the phonon density-of-states. Numerical results were given using the n-type high temperature thermoelectric material La_3-xTe₄ at x = 0, 0.25, and 0.33 as the prototype at a variety of carrier concentrations.

Original language	English (US)
Pages (from-to)	87-91
Number of pages	5
Journal	Scripta Materialia
Volume	169
DOIs	https://doi.org/10.1016/j.scriptamat.2019.05.014
State	Published - Aug 2019

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2019.05.014

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title = "An alternative approach to predict Seebeck coefficients: Application to La3−xTe4",

abstract = "A thermodynamic understanding of Seebeck coefficient was demonstrated in terms of electrochemical potential. It divided the contributions to the Seebeck coefficient into two contributions: the effect of thermal electronic excitations due to Fermi distribution and the effect of charge carrier gradient due to thermal expansion. The procedure is illustrated within the rigid band approximation in terms of the electronic density-of-states and the quasiharmonic approximation in terms of the phonon density-of-states. Numerical results were given using the n-type high temperature thermoelectric material La3-xTe4 at x = 0, 0.25, and 0.33 as the prototype at a variety of carrier concentrations.",

author = "Yi Wang and Xiaoyu Chong and Hu, {Yong Jie} and Shang, {Shun Li} and Drymiotis, {Fivos R.} and Firdosy, {Samad A.} and Star, {Kurt E.} and Fleurial, {Jean Pierre} and Ravi, {Vilupanur A.} and Chen, {Long Qing} and Liu, {Zi Kui}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = aug,

doi = "10.1016/j.scriptamat.2019.05.014",

language = "English (US)",

volume = "169",

pages = "87--91",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - An alternative approach to predict Seebeck coefficients

T2 - Application to La3−xTe4

AU - Wang, Yi

AU - Chong, Xiaoyu

AU - Hu, Yong Jie

AU - Shang, Shun Li

AU - Drymiotis, Fivos R.

AU - Firdosy, Samad A.

AU - Star, Kurt E.

AU - Fleurial, Jean Pierre

AU - Ravi, Vilupanur A.

AU - Chen, Long Qing

AU - Liu, Zi Kui

PY - 2019/8

Y1 - 2019/8

N2 - A thermodynamic understanding of Seebeck coefficient was demonstrated in terms of electrochemical potential. It divided the contributions to the Seebeck coefficient into two contributions: the effect of thermal electronic excitations due to Fermi distribution and the effect of charge carrier gradient due to thermal expansion. The procedure is illustrated within the rigid band approximation in terms of the electronic density-of-states and the quasiharmonic approximation in terms of the phonon density-of-states. Numerical results were given using the n-type high temperature thermoelectric material La3-xTe4 at x = 0, 0.25, and 0.33 as the prototype at a variety of carrier concentrations.

AB - A thermodynamic understanding of Seebeck coefficient was demonstrated in terms of electrochemical potential. It divided the contributions to the Seebeck coefficient into two contributions: the effect of thermal electronic excitations due to Fermi distribution and the effect of charge carrier gradient due to thermal expansion. The procedure is illustrated within the rigid band approximation in terms of the electronic density-of-states and the quasiharmonic approximation in terms of the phonon density-of-states. Numerical results were given using the n-type high temperature thermoelectric material La3-xTe4 at x = 0, 0.25, and 0.33 as the prototype at a variety of carrier concentrations.

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DO - 10.1016/j.scriptamat.2019.05.014

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VL - 169

SP - 87

EP - 91

JO - Scripta Materialia

JF - Scripta Materialia

ER -

An alternative approach to predict Seebeck coefficients: Application to La_3−xTe₄

Abstract

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