Luminescence enhancement of Eu{sup 2+}, Ce{sup 3+} co-doped Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}} phosphors

Host lattice Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}} oxonitridosilicates have been synthesized by the traditional solid state reaction method. The lattice structure is based on layers of vertex-linked SiO{sub 4} tetrahedrons and Ba{sup 2+} ions, where each Ba{sup 2+} ion is coordinated by...

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Published inJournal of solid state chemistry Vol. 183; no. 3
Main Authors Zhang Ruili, Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506, Maeda, Tomonori, Maruta, Ryosuke, Kusaka, Sho, Ding Bingjun, Murai, Kei-ichiro, Moriga, Toshihiro
Format Journal Article
LanguageEnglish
Published United States 15.03.2010
Subjects
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM IONS
CERIUM IONS
CHALCOGENIDES
CHARGED PARTICLES
DOPED MATERIALS
EMISSION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EUROPIUM IONS
EXCITATION
IONS
LUMINESCENCE
MATERIALS
MATERIALS SCIENCE
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
PHOTON EMISSION
PNICTIDES
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
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Summary:Host lattice Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}} oxonitridosilicates have been synthesized by the traditional solid state reaction method. The lattice structure is based on layers of vertex-linked SiO{sub 4} tetrahedrons and Ba{sup 2+} ions, where each Ba{sup 2+} ion is coordinated by eight oxygen atoms forming distorted square antiprisms. Under an excitation wavelength of 365 nm, Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}}:Eu{sup 2+} and Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}}:Eu{sup 2+},Ce{sup 3+} show broad emission bands from about 400-620 nm, with maxima at about 480 nm and half-peak width of around 130 nm. The emission intensity is strongly enhanced by co-doping Ce{sup 3+} ions into the Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}}:Eu{sup 2+} phosphor, which could be explained by energy transfer. The excitation band from the near UV to the blue light region confirms the possibility that Ba{sub 3}Si{sub 5}O{sub 13-{delta}}N{sub {delta}}:Eu{sup 2+}, Ce{sup 3+} could be used as a phosphor for white LEDs. - Graphical abstract: Emission spectra for Ba{sub 3(1-x-y)}Si{sub 5}O{sub 13-{delta}}N{sub {delta}}/xEu{sup 2+},yCe{sup 3+} (0<=x<=2%,0<=y<=2%) under the excitation wavelength of 365 nm.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2009.12.011