Morphological, microstructural, and photoluminescence characterization of heterogeneous/homogeneous TeO₂ nanostructures based on effect of different N₂ gas flow rates
DC Field | Value | Language |
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dc.contributor.author | Na, Han Gil | - |
dc.contributor.author | Jung, Taek-Kyun | - |
dc.contributor.author | Ryou, Min | - |
dc.contributor.author | Lee, Ji-Woon | - |
dc.contributor.author | Beck, Jihyun | - |
dc.contributor.author | Hyun, Soong-Keun | - |
dc.contributor.author | Choi, Myung Sik | - |
dc.contributor.author | Mirzaei, Ali | - |
dc.contributor.author | Choe, Kyeonghwan | - |
dc.contributor.author | Kim, Hyoun Woo | - |
dc.contributor.author | Jin, Changhyun | - |
dc.date.accessioned | 2021-08-02T15:51:19Z | - |
dc.date.available | 2021-08-02T15:51:19Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2017-02 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21200 | - |
dc.description.abstract | TeO₂ nanowires with diameters ranging from a few tens to hundreds of nanometers and lengths of a few tens of micrometers were prepared by thermal evaporation of Te powder with a Co catalyst. Initially, bead-like gamma-TeO₂ nanoparticles on the surface of pre-formed thick TeO₂ nanowires were heterogeneously formed. Subsequently, uniform thin TeO₂ nanowires without the gamma-TeO₂ phase were homogeneously synthesized by changing only the inlet N₂ gas flow rates and keeping other process parameters constant. The morphological and microstructural evolution of the two different nanomaterials was examined by Xray diffraction, energy-dispersive X-ray spectrometry, and scanning and transmission electron micro-scopy. The optical properties of the nanomaterials were also investigated using photoluminescence spectroscopy. The emission peaks in the PL measurement without the supply of N-₂ gas showed a synergetic effect between (1) bead-like orthorhombic gamma-TeO₂ nanoparticles that show two specific emission bands at 388 nm and 590 nm; and (2) uniform tetragonal TeO₂ nanowires that show a characteristic emission band at 440 nm. In contrast, the pure tetragonal TeO₂ nanostructures synthesized under a N₂ gas flow rate of ₂ standard liters per minute flow rate revealed a red-shifted emission band at 450 nm compared to heterogeneous structures of the same composition. The origins of the growth and emission mechanisms in the different TeO₂ structures are also discussed. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Morphological, microstructural, and photoluminescence characterization of heterogeneous/homogeneous TeO₂ nanostructures based on effect of different N₂ gas flow rates | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyoun Woo | - |
dc.identifier.doi | 10.1016/j.jallcom.2016.11.124 | - |
dc.identifier.scopusid | 2-s2.0-84999143104 | - |
dc.identifier.wosid | 000391817600085 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.695, pp.715 - 720 | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 695 | - |
dc.citation.startPage | 715 | - |
dc.citation.endPage | 720 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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.subject.keywordPlus | TELLURIUM NANOWIRE ARRAYS | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | DIOXIDE | - |
dc.subject.keywordPlus | CRYSTALS | - |
dc.subject.keywordPlus | GLASSES | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordAuthor | TeO2 nanowires | - |
dc.subject.keywordAuthor | Flow rate | - |
dc.subject.keywordAuthor | Thermal evaporation | - |
dc.subject.keywordAuthor | Electron microscopy | - |
dc.subject.keywordAuthor | Photoluminescence | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0925838816335927?via%3Dihub | - |
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