Low Temperature Synthesis of Eu-Doped Cubic Phase BaAl2S4 Blue Phosphor Using H3BO3 or B2O3 Flux

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dc.contributor.authorCho, Yang Hwiko
dc.contributor.authorChalapathy, R. B. V.ko
dc.contributor.authorPark, Do Hyungko
dc.contributor.authorAhn, Byung Taeko
dc.date.accessioned2013-03-11T08:14:10Z-
dc.date.available2013-03-11T08:14:10Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-
dc.identifier.citationJOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.157, no.3, pp.45 - 49-
dc.identifier.issn0013-4651-
dc.identifier.urihttp://hdl.handle.net/10203/98748-
dc.description.abstractA H3BO3 or B2O3 flux was added to a mixture of BaS, EuS, Al, and S to synthesize a Eu-doped cubic BaAl2S4 phosphor. The formation temperature of the cubic BaAl2S4 phase was lowered to 600 degrees C, which was 60 degrees C below the temperature of a case without a flux. To improve the crystallinity and color purity, a two-step annealing process that involved low temperature annealing (130 degrees C for H3BO3 and 400 degrees C for B2O3) was proposed for a uniform immersion of a flux into a starting mixture and a high temperature annealing (600 degrees C) for the formation of BaAl2S4. The phosphor synthesized by the two-step process with a 2 wt % H3BO3 flux showed a distinct cubic BaAl2S4 phase and a strong photoluminescence (PL) intensity at 475 nm. The PL intensity was 6.6 times stronger than that of the phosphor without a flux. The phosphor synthesized with a B2O3 flux showed only an orthorhombic phase, while direct annealing at 600 degrees with the flux showed a mixture of cubic and orthorhombic phases. The role of the fluxes in the formation mechanism of the cubic and orthorhombic BaAl2S4 phases was described.-
dc.languageEnglish-
dc.publisherELECTROCHEMICAL SOC INC-
dc.subjectELECTROLUMINESCENT THIN-FILMS-
dc.subjectPHOTOLUMINESCENCE-
dc.titleLow Temperature Synthesis of Eu-Doped Cubic Phase BaAl2S4 Blue Phosphor Using H3BO3 or B2O3 Flux-
dc.typeArticle-
dc.identifier.wosid000274321900098-
dc.identifier.scopusid2-s2.0-76349105757-
dc.type.rimsART-
dc.citation.volume157-
dc.citation.issue3-
dc.citation.beginningpage45-
dc.citation.endingpage49-
dc.citation.publicationnameJOURNAL OF THE ELECTROCHEMICAL SOCIETY-
dc.identifier.doi10.1149/1.3272643-
dc.contributor.localauthorAhn, Byung Tae-
dc.contributor.nonIdAuthorChalapathy, R. B. V.-
dc.contributor.nonIdAuthorPark, Do Hyung-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorannealing-
dc.subject.keywordAuthorbarium compounds-
dc.subject.keywordAuthordoping-
dc.subject.keywordAuthoreuropium-
dc.subject.keywordAuthorhigh-temperature effects-
dc.subject.keywordAuthormaterials preparation-
dc.subject.keywordAuthorphosphors-
dc.subject.keywordAuthorphotoluminescence-
dc.subject.keywordPlusELECTROLUMINESCENT THIN-FILMS-
dc.subject.keywordPlusPHOTOLUMINESCENCE-
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