Effect of Composition and Impurities on the Phosphorescence of Green-Emitting Alkaline Earth Aluminate Phosphor.
DC Field | Value | Language |
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dc.contributor.author | Kim, Doory | - |
dc.contributor.author | Kim, Han-Eol | - |
dc.contributor.author | Kim, Chang-Hong | - |
dc.date.accessioned | 2022-07-15T19:02:13Z | - |
dc.date.available | 2022-07-15T19:02:13Z | - |
dc.date.created | 2021-05-14 | - |
dc.date.issued | 2016-01 | - |
dc.identifier.issn | 1932-6203 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155256 | - |
dc.description.abstract | Recent improvements to SrAl2O4:Eu2+, Dy3+ phosphors have enabled the use of luminescent hosts with a stable crystal structure and high physical and chemical stability, thus overcoming the bottleneck in the applicability of ZnS:Cu phosphors. However, enhancement of afterglow lifetime and brightness in SrAl2O4:Eu2+, Dy3+ phosphors remains a challenging task. Here, we have improved the afterglow characteristics in terms of persistence time and brightness by a systematic investigation of the composition of Eu-doped alkaline earth aluminate SrAl2O4:Eu2+, Dy3+ crystals. We found that a Dy3+/Eu2+ ratio of similar to 2.4 and similar to 0.935 mol Eu2+ (per mol of SrAl2O4) gave the brightest and longest emissions (11% and 9% increase for each). Doping with Si4+ also resulted in a slight increase in brightness up to similar to 15%. Doping with alkali metal or alkaline earth metal significantly enhanced the phosphorescence intensity. In particular, doping with 0.005 mol Li+ (per mol of SrAl2O4) alone boosted the phosphorescence intensity to 239% of the initial value, as compared to that observed for the non-doped crystal, while doping with 0.01 mol Mg2+ and 0.005 mol Li+ (per 1 mol SrAl2O4) boosted the phosphorescence intensity up to 313% of the initial value. The results of this investigation are expected to act as a guideline for the synthesis of bright and long persistent phosphors, and facilitate the development of persistent phosphors with afterglow characteristics superior to those of conventional phosphors. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | PUBLIC LIBRARY SCIENCE | - |
dc.title | Effect of Composition and Impurities on the Phosphorescence of Green-Emitting Alkaline Earth Aluminate Phosphor. | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Doory | - |
dc.identifier.doi | 10.1371/journal.pone.0145434 | - |
dc.identifier.scopusid | 2-s2.0-84953898228 | - |
dc.identifier.wosid | 000367801400035 | - |
dc.identifier.bibliographicCitation | PLOS ONE, v.11, no.1, pp.1 - 12 | - |
dc.relation.isPartOf | PLOS ONE | - |
dc.citation.title | PLOS ONE | - |
dc.citation.volume | 11 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 12 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | PERSISTENT LUMINESCENCE | - |
dc.subject.keywordPlus | EU2+ | - |
dc.subject.keywordPlus | SRAL2O4-EU2+ | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | DY3+ | - |
dc.identifier.url | https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0145434 | - |
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