Phase control of yttrium (Y)-doped TiO2 nanofibers and intensive visible photoluminescence
DC Field | Value | Language |
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dc.contributor.author | Kumar, Koppala Siva | - |
dc.contributor.author | Song, Chan-Geun | - |
dc.contributor.author | Bak, Geon Myeon | - |
dc.contributor.author | Heo, Gaeun | - |
dc.contributor.author | Seong, Maeng-Je | - |
dc.contributor.author | Yoon, Jong-Won | - |
dc.date.available | 2019-03-08T20:40:24Z | - |
dc.date.issued | 2014-12 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.issn | 1873-4669 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/11477 | - |
dc.description.abstract | Yttrium (Y)-doped TiO2 nanofibers were successfully fabricated by electrospinning and the subsequent calcination of the as-spun nanofibers. The X-ray diffraction and Raman scattering results showed that the incorporation of Y into TiO2 impedes the rutile-phase growth, facilitates the anatase phase growth. Estimated grain sizes are reduced from 15.71 nm to 8.8 nm with increasing Y-doping concentration. Raman scattering studies confirm the existence of slight brookite phase in case of Y-doped TiO2 nanofibers. Field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) images revealed that the nanofibers comprised of nanoparticles and that Y-doping reduced the nanoparticle size. The optical band gap energy increased with increasing Y-doping, which can be ascribed to both quantum confinement effect and pure anatase phase transformation from mixed rutile-anatase phase. Y-doping induced a blue-shift of the broad visible photoluminescence (PL) peak and an increase of PL intensity with the concurrent decrease grain size. For 3 at.% Y-doped TiO2 nanofibers PL intensity enormously increased due to defect-related centers on the surface. (C) 2014 Elsevier B.V. All rights reserved. | - |
dc.format.extent | 5 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Phase control of yttrium (Y)-doped TiO2 nanofibers and intensive visible photoluminescence | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jallcom.2014.08.067 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.617, pp 683 - 687 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000344135800111 | - |
dc.identifier.scopusid | 2-s2.0-84906858284 | - |
dc.citation.endPage | 687 | - |
dc.citation.startPage | 683 | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 617 | - |
dc.type.docType | Article | - |
dc.publisher.location | 스위스 | - |
dc.subject.keywordAuthor | Y-doped TiO2 nanofibers | - |
dc.subject.keywordAuthor | Electrospinning | - |
dc.subject.keywordAuthor | Raman | - |
dc.subject.keywordAuthor | UV-Visible diffuse reflectance | - |
dc.subject.keywordAuthor | Photoluminescence | - |
dc.subject.keywordPlus | SENSITIZED SOLAR-CELLS | - |
dc.subject.keywordPlus | DOPED TIO2 | - |
dc.subject.keywordPlus | PHOTOCATALYTIC DEGRADATION | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | RAMAN-SPECTRUM | - |
dc.subject.keywordPlus | METHYL-ORANGE | - |
dc.subject.keywordPlus | ANATASE | - |
dc.subject.keywordPlus | BROOKITE | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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