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Article: Achieving a fine balance between the strong mechanical and high thermoelectric properties of n-type PbTe-3% Sb materials by alloying with PbS

TitleAchieving a fine balance between the strong mechanical and high thermoelectric properties of n-type PbTe-3% Sb materials by alloying with PbS
Authors
KeywordsAlloying
IV-VI semiconductors
Mechanical properties
Microhardness
Thermoelectric equipment
Issue Date2019
PublisherRSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ta#!recentarticles&all
Citation
Journal of Materials Chemistry A, 2019, v. 7 n. 11, p. 6304-6311 How to Cite?
AbstractBoth p- and n-type PbTe based materials exhibit excellent thermoelectric properties. However, their mechanical properties are relatively poor compared to those of state-of-the-art thermoelectric materials. In this work, we try to obtain a balance between the strong mechanical properties and high thermoelectric properties of n-type PbTe–3% Sb materials by alloying with PbS. The results indicate that the elastic moduli remain almost unchanged, while the microhardness increases by 62% from a reference value of 54.2 kg mm−2 to approximately 88 kg mm−2 after alloying with PbS (<15%) at room temperature, which is comparable to or even higher than those of common thermoelectric materials. Such a great enhancement of microhardness costs only 7.4% reduction of the dimensionless figure of merit (ZT). A high ZT value of ∼1.5 at 823 K is still maintained. Achieving this fine balance between strong mechanical properties and high thermoelectric properties is crucial to the practical applications of PbTe materials in the electricity generation field.
Persistent Identifierhttp://hdl.handle.net/10722/272242
ISSN
2017 Impact Factor: 9.931
2015 SCImago Journal Rankings: 2.770

 

DC FieldValueLanguage
dc.contributor.authorFu, L-
dc.contributor.authorCUI, J-
dc.contributor.authorYu, Y-
dc.contributor.authorHuang, Y-
dc.contributor.authorWang, Y-
dc.contributor.authorChen, Y-
dc.contributor.authorHe, J-
dc.date.accessioned2019-07-20T10:38:27Z-
dc.date.available2019-07-20T10:38:27Z-
dc.date.issued2019-
dc.identifier.citationJournal of Materials Chemistry A, 2019, v. 7 n. 11, p. 6304-6311-
dc.identifier.issn2050-7488-
dc.identifier.urihttp://hdl.handle.net/10722/272242-
dc.description.abstractBoth p- and n-type PbTe based materials exhibit excellent thermoelectric properties. However, their mechanical properties are relatively poor compared to those of state-of-the-art thermoelectric materials. In this work, we try to obtain a balance between the strong mechanical properties and high thermoelectric properties of n-type PbTe–3% Sb materials by alloying with PbS. The results indicate that the elastic moduli remain almost unchanged, while the microhardness increases by 62% from a reference value of 54.2 kg mm−2 to approximately 88 kg mm−2 after alloying with PbS (<15%) at room temperature, which is comparable to or even higher than those of common thermoelectric materials. Such a great enhancement of microhardness costs only 7.4% reduction of the dimensionless figure of merit (ZT). A high ZT value of ∼1.5 at 823 K is still maintained. Achieving this fine balance between strong mechanical properties and high thermoelectric properties is crucial to the practical applications of PbTe materials in the electricity generation field.-
dc.languageeng-
dc.publisherRSC Publications. The Journal's web site is located at http://pubs.rsc.org/en/journals/journalissues/ta#!recentarticles&all-
dc.relation.ispartofJournal of Materials Chemistry A-
dc.subjectAlloying-
dc.subjectIV-VI semiconductors-
dc.subjectMechanical properties-
dc.subjectMicrohardness-
dc.subjectThermoelectric equipment-
dc.titleAchieving a fine balance between the strong mechanical and high thermoelectric properties of n-type PbTe-3% Sb materials by alloying with PbS-
dc.typeArticle-
dc.identifier.emailChen, Y: yuechen@hku.hk-
dc.identifier.authorityChen, Y=rp01925-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/C9TA00400A-
dc.identifier.scopuseid_2-s2.0-85062891160-
dc.identifier.hkuros298972-
dc.identifier.volume7-
dc.identifier.issue11-
dc.identifier.spage6304-
dc.identifier.epage6311-
dc.publisher.placeUnited Kingdom-

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