Open Access System for Information Sharing

Login Library

 

Article
Cited 1 time in webofscience Cited 1 time in scopus
Metadata Downloads
Full metadata record
Files in This Item:
There are no files associated with this item.
DC FieldValueLanguage
dc.contributor.authorKumar, Anil-
dc.contributor.authorThoravat, Saurabh-
dc.contributor.authorJin, Hong Jong-
dc.contributor.authorPark, Junyoung-
dc.contributor.authorJin, Hyungyu-
dc.contributor.authorRawat, Pooja-
dc.contributor.authorRhyee, Jong-Soo-
dc.date.accessioned2024-03-04T09:00:07Z-
dc.date.available2024-03-04T09:00:07Z-
dc.date.created2024-03-04-
dc.date.issued2024-04-
dc.identifier.issn0925-8388-
dc.identifier.urihttps://oasis.postech.ac.kr/handle/2014.oak/120782-
dc.description.abstractWe optimize the thermoelectric (TE) properties by minimizing thermal conductivity utilizing by hierarchical phonon scattering from long to mid wavelength of phonon in p-type Bi0.4Sb1.6Te3.4 (BST) composite with nano Ag-coated TiO2 (Ag/TiO2). We employed an Ag nano particle (20 nm) modulation into TiO2 (500 nm) particles by spray coating method and dispersed in a p-type Bi0.4Sb1.6Te3.4 (BST), giving rise to a hierarchical architecture from nano to micro scale. The nano particle modulation of Ag/TiO2 particles decreases grain sizes of p-type BST matrix. The hierarchical structure of modulating nano particles and small grain sizes of the matrix significantly decreases lattice thermal conductivity due to wide range of wavelength phonon scattering, resulting in the enhancement of thermoelectric performance over a large temperature range. The maximum thermoelectric figure-of-merit zT value reaches to 1.28 for 0.9 wt% Ag/TiO2 modulation doping, which is superior to the other reported ones. The optimized modulating Ag/TiO2 nano-particle dispersion effectively maintains the valence band structure while concurrently mitigating the scattering of charge carriers. Therefore, the nano particle modulation by spray coating method is an effective way to manifest hierarchical architecture from nano to micro-scale phonon scattering, which can be applied in thermoelectric materials design and process. © 2024 Elsevier B.V.-
dc.languageEnglish-
dc.publisherElsevier BV-
dc.relation.isPartOfJournal of Alloys and Compounds-
dc.titleHierarchical nano-/micro-architecture phonon scattering of p-type Bismuth telluride bulk composites with Ag-TiO2 nano particles synthesized by fluidized bed spray coating method-
dc.typeArticle-
dc.identifier.doi10.1016/j.jallcom.2024.173503-
dc.type.rimsART-
dc.identifier.bibliographicCitationJournal of Alloys and Compounds, v.979, pp.173503-
dc.identifier.wosid001168928500001-
dc.citation.startPage173503-
dc.citation.titleJournal of Alloys and Compounds-
dc.citation.volume979-
dc.contributor.affiliatedAuthorJin, Hyungyu-
dc.identifier.scopusid2-s2.0-85183462204-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.type.docTypeArticle-
dc.subject.keywordPlusENHANCED THERMOELECTRIC PERFORMANCE-
dc.subject.keywordPlusTHERMAL-CONDUCTIVITY-
dc.subject.keywordPlusANTIMONY-TELLURIDE-
dc.subject.keywordPlusEFFECTIVE-MASS-
dc.subject.keywordPlusHIGH-PRESSURE-
dc.subject.keywordPlusDISPERSION-
dc.subject.keywordPlusREDUCTION-
dc.subject.keywordPlusALLOY-
dc.subject.keywordPlusHEAT-
dc.subject.keywordPlusTE-
dc.subject.keywordAuthorNano-scale architecture-
dc.subject.keywordAuthorSpray coating-
dc.subject.keywordAuthorThermoelectric-
dc.subject.keywordAuthorHierarchical phonon scattering-
dc.subject.keywordAuthorThermal conductivity-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryMetallurgy & Metallurgical Engineering-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaMetallurgy & Metallurgical Engineering-

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

진현규JIN, HYUNGYU
Dept of Mechanical Enginrg
Read more

Views & Downloads

Browse