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Dependence of Eu3+ photoluminescence properties on structural transformations in diopside-based glass-ceramics

hal.structure.identifierCentre d'Etudes Lasers Intenses et Applications [CELIA]
hal.structure.identifierGlass Science and Technology Section
hal.structure.identifierDepartment of Materials and Ceramics Engineering
dc.contributor.authorALLU, Amarnath R.
hal.structure.identifierDepartment of Chemical Engineering
dc.contributor.authorDAS, Subrata
hal.structure.identifierDepartment of Chemical Engineering
dc.contributor.authorSOM, S.
hal.structure.identifierSchool of Physics
dc.contributor.authorMARAKA, Harsha Vardhan R.
hal.structure.identifierGlass Science and Technology Section
dc.contributor.authorBALAJI, Sathravada
hal.structure.identifierCentro de Quimica Estrutural [CQE]
dc.contributor.authorSANTOS, Luis F.
hal.structure.identifierCentre d'Etudes Lasers Intenses et Applications [CELIA]
dc.contributor.authorMANEK-HÖNNINGER, Inka
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJUBERA, Veronique
hal.structure.identifierDepartment of Materials and Ceramics Engineering
dc.contributor.authorFERREIRA, José M.F.
dc.date.issued2017
dc.identifier.issn0925-8388
dc.description.abstractEnHerein, diopside based glass-ceramics (GCs) were produced by sintering of glass powder compacts at 850 °C for 300 h. A special attention was paid on understanding the influence of structural transformations upon substituting strontium for calcium on the Eu3+ emission behavior. X-ray diffraction and Raman spectra showed the formation of diopside (CaMgSi2O6) in Sr-free glasses. Introduction of Sr led to the appearance of Sr-akermanite (Sr2MgSi2O7), whose formation increased continuously with increasing Sr/Ca ratio. The photoluminescence spectra exhibited intense 5D0 →7Fj transitions of Eu3+ ions. The intensity parameters (Ω2 and Ω4) and the Eu–O ligand behavior were determined using the Judd-Ofelt (JO) theory from the emission spectra as a function of various Sr concentrations. The as obtained JO intensity parameters Ω2 (5.31–5.21 pm2) and Ω4 (4.89–5.84 pm2) indicated the ligand behavior of the Eu–O bonds and a high asymmetrical and covalent environment around Eu3+ ions in the present host matrix. In comparison with other Eu3+-doped GCs, diopside based GCs containing high fraction of SrO exhibited adequate photoluminescence for optical lighting and display devices.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux
dc.language.isoen
dc.publisherElsevier
dc.subject.enDiposide
dc.subject.enAkermanite
dc.subject.enPhotoluminescence
dc.subject.enQuantum efficiency
dc.title.enDependence of Eu3+ photoluminescence properties on structural transformations in diopside-based glass-ceramics
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jallcom.2016.12.438
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Alloys and Compounds
bordeaux.page856-865
bordeaux.volume699
bordeaux.peerReviewedoui
hal.identifierhal-01497551
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01497551v1
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