DC Field | Value | Language |
---|---|---|
dc.contributor.author | Back, S.Y. | - |
dc.contributor.author | Cho, H. | - |
dc.contributor.author | Byeon, S. | - |
dc.contributor.author | Jin, H. | - |
dc.contributor.author | Rhyee, J.-S. | - |
dc.date.accessioned | 2020-10-05T06:50:04Z | - |
dc.date.available | 2020-10-05T06:50:04Z | - |
dc.date.created | 2020-09-10 | - |
dc.date.issued | 2020-09 | - |
dc.identifier.issn | 1567-1739 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/104243 | - |
dc.description.abstract | We investigate the thermoelectric properties on Ga-excess p-type GaxBi(0.4)Sb(1.6)Te(3) compounds. Even though the random distribution of Ga-doping increases electrical resistivity giving rise to the decrease of power factor, the significant decrease of lattice thermal conductivity by the excess Ga-doping induces significant enhancement of ZT value (1.13 at 350 K) for the Ga x = 0.03 doped compound. From the X-ray diffraction and elemental mapping by energy dispersive X-ray spectroscopy, we observed Sb and Ga phase separation leading to the phonon scattering. The Sb precipitation implies atomic defect in the matrix which can induce short wavelength phonon scattering. The synergetic phonon scatterings from various scattering sources such as point defect, alloy scattering, and grain boundary phonon scattering have an important role in the enhancement of thermoelectric performance. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.relation.isPartOf | CURRENT APPLIED PHYSICS | - |
dc.title | Effective phonon scattering and enhancement of thermoelectric performance in Ga-excess Bi0.4Sb1.6Te3 compounds | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.cap.2020.06.024 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | CURRENT APPLIED PHYSICS, v.20, no.9, pp.1036 - 1040 | - |
dc.identifier.wosid | 000565890700007 | - |
dc.citation.endPage | 1040 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 1036 | - |
dc.citation.title | CURRENT APPLIED PHYSICS | - |
dc.citation.volume | 20 | - |
dc.contributor.affiliatedAuthor | Byeon, S. | - |
dc.contributor.affiliatedAuthor | Jin, H. | - |
dc.identifier.scopusid | 2-s2.0-85088637831 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | Energy dispersive X ray spectroscopy | - |
dc.subject.keywordPlus | Antimony | - |
dc.subject.keywordPlus | Antimony compounds | - |
dc.subject.keywordPlus | Bismuth compounds | - |
dc.subject.keywordPlus | Energy dispersive spectroscopy | - |
dc.subject.keywordPlus | Grain boundaries | - |
dc.subject.keywordPlus | Phase separation | - |
dc.subject.keywordPlus | Phonon scattering | - |
dc.subject.keywordPlus | Phonons | - |
dc.subject.keywordPlus | Tellurium compounds | - |
dc.subject.keywordPlus | Thermoelectricity | - |
dc.subject.keywordPlus | Elemental mapping | - |
dc.subject.keywordPlus | Lattice thermal conductivity | - |
dc.subject.keywordPlus | Random distribution | - |
dc.subject.keywordPlus | Scattering source | - |
dc.subject.keywordPlus | Short wavelengths | - |
dc.subject.keywordPlus | Thermoelectric performance | - |
dc.subject.keywordPlus | Thermoelectric properties | - |
dc.subject.keywordPlus | Gallium compounds | - |
dc.subject.keywordAuthor | Thermoelectric | - |
dc.subject.keywordAuthor | Electrical transport | - |
dc.subject.keywordAuthor | Thermal transport | - |
dc.subject.keywordAuthor | Bismuth telluride | - |
dc.subject.keywordAuthor | Phonon scattering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
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