Origin of strong red emission in Er3+-based upconversion materials: role of intermediate states and cross relaxation
DC Field | Value | Language |
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dc.contributor.author | Lee, Chiho | - |
dc.contributor.author | Park, Heeyeon | - |
dc.contributor.author | Kim, Woong | - |
dc.contributor.author | Park, Sungnam | - |
dc.date.accessioned | 2021-08-31T23:02:31Z | - |
dc.date.available | 2021-08-31T23:02:31Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2019-11-21 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/61552 | - |
dc.description.abstract | Among the various upconversion (UC) materials, sodium yttrium fluoride doped with ytterbium and erbium (NaYF4:Yb3+,Er3+) is the most widely studied owing to its high UC efficiency. Nonetheless, UC mechanisms are not yet fully understood and, in particular, near-infrared-to-red UC mechanisms are still under debate. Herein, we examine UC mechanisms in Er3+-based UC materials. Most importantly, the F-4(3/2) and F-4(5/2) states of Er3+ were found to be important intermediate states for strong red emission, for the first time. The cross relaxation between the Er3+ ions, back energy transfer from Er3+ to Yb3+, and relative doping concentrations of Er3+ and Yb3+ in NaYF4:Yb3+,Er3+ were found to play important roles in the relative intensity between red and green emissions. The proposed UC mechanism will provide design principles for various Er3+-based UC materials. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | DOPANT-CONTROLLED SYNTHESIS | - |
dc.subject | LANTHANIDE-DOPED NAYF4 | - |
dc.subject | CHARGE-TRANSFER | - |
dc.subject | NANOPARTICLES | - |
dc.subject | LUMINESCENCE | - |
dc.subject | NANOCRYSTALS | - |
dc.subject | CORE | - |
dc.subject | NANOPHOSPHORS | - |
dc.subject | FLUORESCENCE | - |
dc.subject | ENHANCEMENT | - |
dc.title | Origin of strong red emission in Er3+-based upconversion materials: role of intermediate states and cross relaxation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Woong | - |
dc.contributor.affiliatedAuthor | Park, Sungnam | - |
dc.identifier.doi | 10.1039/c9cp04692e | - |
dc.identifier.scopusid | 2-s2.0-85074676263 | - |
dc.identifier.wosid | 000496151800019 | - |
dc.identifier.bibliographicCitation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.21, no.43, pp.24026 - 24033 | - |
dc.relation.isPartOf | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.title | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.volume | 21 | - |
dc.citation.number | 43 | - |
dc.citation.startPage | 24026 | - |
dc.citation.endPage | 24033 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.subject.keywordPlus | DOPANT-CONTROLLED SYNTHESIS | - |
dc.subject.keywordPlus | LANTHANIDE-DOPED NAYF4 | - |
dc.subject.keywordPlus | CHARGE-TRANSFER | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | CORE | - |
dc.subject.keywordPlus | NANOPHOSPHORS | - |
dc.subject.keywordPlus | FLUORESCENCE | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
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