Zero-thermal-quenching and improved chemical stability of a UCr4C4-type phosphor via crystal site engineering
DC Field | Value | Language |
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dc.contributor.author | Viswanath, N. S. M. | - |
dc.contributor.author | Grandhi, G. Krishnamurthy | - |
dc.contributor.author | Huu, Ha Tran | - |
dc.contributor.author | Choi, Hyuk | - |
dc.contributor.author | Kim, Ha Jun | - |
dc.contributor.author | Kim, Seong Min | - |
dc.contributor.author | Kim, Hyun You | - |
dc.contributor.author | Park, Chan-Jin | - |
dc.contributor.author | Im, Won Bin | - |
dc.date.accessioned | 2023-08-16T07:53:04Z | - |
dc.date.available | 2023-08-16T07:53:04Z | - |
dc.date.created | 2023-07-21 | - |
dc.date.issued | 2021-09 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189174 | - |
dc.description.abstract | Europium-doped UCr4C4 cuboid phosphors with narrow and tunable emission show promise for application in designing light-emitting diodes with high color purity and thermal stability. Nevertheless, their poor chemical stability bottlenecks their use in lighting applications. Herein, a dual narrow-band blue-emitting Ce3+-doped CsNa2K(Li3SiO4)(4) (CNKLSO) cuboid phosphor with a quantum yield of 80% is synthesized. The dual-band emission is attributed to the occupation of Ce3+ at two distinct sites of CNKLSO, which is consistent with the density functional theory outcomes. Ce3+ doping produces stable emission characteristics, in contrast to Eu2+ incorporation, because of the improved site stability, as realized from bond valence sum calculations. Remarkably, no drop in the emission intensity is observed even at 200 degrees C, making CNKLSO:Ce3+ the first Ce3+-based zero-thermal-quenching phosphor. A CNKLSO:Ce3+-based white light-emitting diode displays an excellent color rendering index (similar to 95) at a high flux current of 1000 mA. The proposed study indicates that Ce3+ doping in other UCr4C4-type oxide phosphors may improve the site stability, which in turn the chemical stability of the phosphor materials can be boosted. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Zero-thermal-quenching and improved chemical stability of a UCr4C4-type phosphor via crystal site engineering | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Im, Won Bin | - |
dc.identifier.doi | 10.1016/j.cej.2020.127664 | - |
dc.identifier.scopusid | 2-s2.0-85096496851 | - |
dc.identifier.wosid | 000664793200002 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.420 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 420 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | EU | - |
dc.subject.keywordAuthor | Blue-emitting phosphor | - |
dc.subject.keywordAuthor | Chemical stability | - |
dc.subject.keywordAuthor | Zero thermal quenching | - |
dc.subject.keywordAuthor | High-power lighting applications | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894720337864?via%3Dihub | - |
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