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New luminescent rare earth activated oxynitridosilicates and oxynitridogermanates with the apatite structure

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierInstitut de Ciència de Materials de Barcelona [ICMAB]
dc.contributor.authorTHOMAS, Sébastien
hal.structure.identifierInstitut de Ciència de Materials de Barcelona [ICMAB]
dc.contributor.authorORÓ-SOLÉ, Judith
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGLORIEUX, Benoit
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJUBERA, Veronique
hal.structure.identifierCentre de Recherches d'Aubervilliers
dc.contributor.authorBUISSETTE, Valérie
hal.structure.identifierCentre de Recherches d'Aubervilliers
dc.contributor.authorLE MERCIER, Thierry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGARCIA, Alain
hal.structure.identifierInstitut de Ciència de Materials de Barcelona [ICMAB]
dc.contributor.authorFUERTES, Amparo
dc.date.issued2012
dc.identifier.issn0959-9428
dc.description.abstractEnNew luminescent oxynitrides based on the apatite structure doped with Eu2+ and Ce3+ have been prepared by ammonolysis of oxysilicate or oxygermanate precursors. The host compounds have the general formula La10−xSrx(Si/Ge)6O27−x/2−3y/2Ny. When doped with divalent europium or trivalent cerium they present blue, green, yellowish green or orange luminescence under UV/blue excitation. Remarkable long wavelength emissions centred beyond 500 nm are observed for the Ce3+ activated oxynitridosilicates and oxynitridogermanates, with compositions La8.9Ce0.1SrSi6N0.37O25.95, La8.9Ce0.1SrSi6N1.06O24.91 (λem = 545 nm) and La9.9Ce0.1Ge6N2.46O23.31 (λem = 590 nm). The treatment of precursor oxides with the required cationic ratios in NH3 gas was used as a convenient general method to prepare the oxynitride materials at moderate temperatures. This allowed decreasing the nitriding temperature from 1600-1400 °C to 1050-600 °C with respect to the method generally used for the synthesis of luminescent (oxy)nitride silicates, the solid state reaction between oxides, nitrides and carbonates under a N2 or N2-H2 flow.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.subject.enLuminescent materials
dc.subject.enOxynitrides
dc.subject.enRare earth
dc.title.enNew luminescent rare earth activated oxynitridosilicates and oxynitridogermanates with the apatite structure
dc.typeArticle de revue
dc.identifier.doi10.1039/C2JM35168D
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry
bordeaux.page23913-23920
bordeaux.volume22
bordeaux.issue45
bordeaux.peerReviewedoui
hal.identifierhal-00763835
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00763835v1
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