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Article: Atomic disordering advances thermoelectric group IV telluride alloys with a multiband transport

TitleAtomic disordering advances thermoelectric group IV telluride alloys with a multiband transport
Authors
KeywordsThermoelectrics
IV-VI alloys
Massive atomic disorder
Lattice thermal conductivity
Multi-valley bands
Issue Date2020
PublisherElsevier Ltd. The Journal's web site is located at http://www.journals.elsevier.com/materials-today-physics
Citation
Materials Today Physics, 2020, v. 15, p. article no. 100247 How to Cite?
AbstractMinimization of lattice thermal conductivity plays a key role in advancing thermoelectrics, a typical strategy of which is the introduction of atomic disorder for strong phonon scattering through atomic mass and strain fluctuations. Maximizing this type of scattering requires dense point defects with large mass/strain contrasts, motivating the current work to focus on the thermoelectric properties of Sn1/3Ge1/3Pb1/3Te with massive disordered cations. Thanks to the formation of a solid solution around this particular composition, which enables an atomic disorder significantly higher than ever reported in IV-VI alloys, the resultant strong phonon scattering leads to a dramatic reduction in lattice thermal conductivity in the entire temperature range. In addition, MnTe alloying leads to a maximization of transporting valence bands for a superior electronic performance. These effects end up with both an extraordinary peak figure of merit and a significant improvement in its average. This leads Sn1/3Ge1/3Pb1/3Te alloys, crystallographically close relatives to SnTe, to be significantly superior in thermoelectric performance to that of SnTe.
Persistent Identifierhttp://hdl.handle.net/10722/300671
ISSN
2023 Impact Factor: 10.0
2023 SCImago Journal Rankings: 2.304
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTang, J-
dc.contributor.authorYao, Z-
dc.contributor.authorWu, Y-
dc.contributor.authorLin, S-
dc.contributor.authorXIONG, F-
dc.contributor.authorLi, W-
dc.contributor.authorChen, Y-
dc.contributor.authorZhu, T-
dc.contributor.authorPei, Y-
dc.date.accessioned2021-06-18T14:55:19Z-
dc.date.available2021-06-18T14:55:19Z-
dc.date.issued2020-
dc.identifier.citationMaterials Today Physics, 2020, v. 15, p. article no. 100247-
dc.identifier.issn2542-5293-
dc.identifier.urihttp://hdl.handle.net/10722/300671-
dc.description.abstractMinimization of lattice thermal conductivity plays a key role in advancing thermoelectrics, a typical strategy of which is the introduction of atomic disorder for strong phonon scattering through atomic mass and strain fluctuations. Maximizing this type of scattering requires dense point defects with large mass/strain contrasts, motivating the current work to focus on the thermoelectric properties of Sn1/3Ge1/3Pb1/3Te with massive disordered cations. Thanks to the formation of a solid solution around this particular composition, which enables an atomic disorder significantly higher than ever reported in IV-VI alloys, the resultant strong phonon scattering leads to a dramatic reduction in lattice thermal conductivity in the entire temperature range. In addition, MnTe alloying leads to a maximization of transporting valence bands for a superior electronic performance. These effects end up with both an extraordinary peak figure of merit and a significant improvement in its average. This leads Sn1/3Ge1/3Pb1/3Te alloys, crystallographically close relatives to SnTe, to be significantly superior in thermoelectric performance to that of SnTe.-
dc.languageeng-
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.journals.elsevier.com/materials-today-physics-
dc.relation.ispartofMaterials Today Physics-
dc.subjectThermoelectrics-
dc.subjectIV-VI alloys-
dc.subjectMassive atomic disorder-
dc.subjectLattice thermal conductivity-
dc.subjectMulti-valley bands-
dc.titleAtomic disordering advances thermoelectric group IV telluride alloys with a multiband transport-
dc.typeArticle-
dc.identifier.emailChen, Y: yuechen@hku.hk-
dc.identifier.authorityChen, Y=rp01925-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.mtphys.2020.100247-
dc.identifier.scopuseid_2-s2.0-85088998811-
dc.identifier.hkuros322941-
dc.identifier.volume15-
dc.identifier.spagearticle no. 100247-
dc.identifier.epagearticle no. 100247-
dc.identifier.isiWOS:000600701300005-
dc.publisher.placeUnited Kingdom-

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