Europium (II)-Doped Microporous Zeolite Derivatives with Enhanced Photoluminescence by Isolating Active Luminescence Centers

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage4436en_US
dc.citation.issueNumber11en_US
dc.citation.spage4431en_US
dc.citation.volumeNumber3en_US
dc.contributor.authorYang, X. Y.en_US
dc.contributor.authorTiam, T. S.en_US
dc.contributor.authorYu, X. B.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.contributor.authorSun, X. W.en_US
dc.date.accessioned2015-07-28T11:59:16Z
dc.date.available2015-07-28T11:59:16Z
dc.date.issued2011-10-21en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractSolid-state reaction is the most common method for preparing luminescent materials. However, the luminescent dopants in the hosts tend to aggregate in the high-temperature annealing process, which causes adverse effect in photoluminescence. Herein, we report a novel europium (II)-doped zeolite derivative prepared by a combined ion-exchange and solid-state reaction method, in which the europium (II) ions are isolated to a large extent by the micropores of the zeolite. Excited by a broad ultraviolet band from 250 to 420 nm, a strong blue emission peaking at 450 nm was observed for these Eu-embedded zeolites annealed at 800 degrees C in a reducing atmosphere. The zeolite host with pores of molecular dimension was found to be an excellent host to isolate and stabilize the Eu2+ ions. The as-obtained europium (II)-doped zeolite derivative showed an approximately 9 fold enhancement in blue emission compared to that of the general europium (111)-doped aluminosilicates obtained by conventional solid-state reaction, indicating that, by isolating active luminescence centers, it is promising to achieve highly luminescent materials. Also, the strong blue emission with broad UV excitation band suggests a potential candidate of phosphor for ultraviolet excited light-emitting diode.en_US
dc.identifier.doi10.1021/am2012118en_US
dc.identifier.issn1944-8244
dc.identifier.urihttp://hdl.handle.net/11693/11905
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/am2012118en_US
dc.source.titleACS Applied Materials and Interfacesen_US
dc.subjectZeoliteen_US
dc.subjectIon-exchangeen_US
dc.subjectSolid-state reactionen_US
dc.subjectPhotoluminescenceen_US
dc.subjectLuminophoren_US
dc.subjectLeden_US
dc.titleEuropium (II)-Doped Microporous Zeolite Derivatives with Enhanced Photoluminescence by Isolating Active Luminescence Centersen_US
dc.typeArticleen_US

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