Restructured single parabolic band model for quick analysis in thermoelectricity

Abstract The single parabolic band (SPB) model has been widely used to preliminarily elucidate inherent transport behaviors of thermoelectric (TE) materials, such as their band structure and electronic thermal conductivity, etc. However, in the SPB calculation, it is necessary to determine some inte...

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Autores principales:	Jianbo Zhu, Xuemei Zhang, Muchun Guo, Jingyu Li, Jinsuo Hu, Songting Cai, Wei Cai, Yongsheng Zhang, Jiehe Sui
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/43fada747ed740c1861a656d76d97761
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spelling	oai:doaj.org-article:43fada747ed740c1861a656d76d977612021-12-02T16:17:17ZRestructured single parabolic band model for quick analysis in thermoelectricity10.1038/s41524-021-00587-52057-3960https://doaj.org/article/43fada747ed740c1861a656d76d977612021-07-01T00:00:00Zhttps://doi.org/10.1038/s41524-021-00587-5https://doaj.org/toc/2057-3960Abstract The single parabolic band (SPB) model has been widely used to preliminarily elucidate inherent transport behaviors of thermoelectric (TE) materials, such as their band structure and electronic thermal conductivity, etc. However, in the SPB calculation, it is necessary to determine some intermediate variables, such as Fermi level or the complex Fermi-Dirac integrals. In this work, we establish a direct carrier-concentration-dependent restructured SPB model, which eliminates Fermi-Dirac integrals and Fermi level calculation and emerges stronger visibility and usability in experiments. We have verified the reliability of such restructured model with 490 groups of experimental data from state-of-the-art TE materials and the relative error is less than 2%. Moreover, carrier effective mass, intrinsic carrier mobility and optimal carrier concentration of these materials are systematically investigated. We believe that our work can provide more convenience and accuracy for thermoelectric data analysis as well as instructive understanding on future optimization design.Jianbo ZhuXuemei ZhangMuchun GuoJingyu LiJinsuo HuSongting CaiWei CaiYongsheng ZhangJiehe SuiNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 7, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Jianbo Zhu Xuemei Zhang Muchun Guo Jingyu Li Jinsuo Hu Songting Cai Wei Cai Yongsheng Zhang Jiehe Sui Restructured single parabolic band model for quick analysis in thermoelectricity
description	Abstract The single parabolic band (SPB) model has been widely used to preliminarily elucidate inherent transport behaviors of thermoelectric (TE) materials, such as their band structure and electronic thermal conductivity, etc. However, in the SPB calculation, it is necessary to determine some intermediate variables, such as Fermi level or the complex Fermi-Dirac integrals. In this work, we establish a direct carrier-concentration-dependent restructured SPB model, which eliminates Fermi-Dirac integrals and Fermi level calculation and emerges stronger visibility and usability in experiments. We have verified the reliability of such restructured model with 490 groups of experimental data from state-of-the-art TE materials and the relative error is less than 2%. Moreover, carrier effective mass, intrinsic carrier mobility and optimal carrier concentration of these materials are systematically investigated. We believe that our work can provide more convenience and accuracy for thermoelectric data analysis as well as instructive understanding on future optimization design.
format	article
author	Jianbo Zhu Xuemei Zhang Muchun Guo Jingyu Li Jinsuo Hu Songting Cai Wei Cai Yongsheng Zhang Jiehe Sui
author_facet	Jianbo Zhu Xuemei Zhang Muchun Guo Jingyu Li Jinsuo Hu Songting Cai Wei Cai Yongsheng Zhang Jiehe Sui
author_sort	Jianbo Zhu
title	Restructured single parabolic band model for quick analysis in thermoelectricity
title_short	Restructured single parabolic band model for quick analysis in thermoelectricity
title_full	Restructured single parabolic band model for quick analysis in thermoelectricity
title_fullStr	Restructured single parabolic band model for quick analysis in thermoelectricity
title_full_unstemmed	Restructured single parabolic band model for quick analysis in thermoelectricity
title_sort	restructured single parabolic band model for quick analysis in thermoelectricity
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/43fada747ed740c1861a656d76d97761
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_version_	1718384226941796352

Restructured single parabolic band model for quick analysis in thermoelectricity

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