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
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Shaanxi 710049 (China)
- Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506 (Japan)
- Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima 770-8506 (Japan)
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.
- OSTI ID:
- 21372529
- Journal Information:
- Journal of Solid State Chemistry, Vol. 183, Issue 3; Other Information: DOI: 10.1016/j.jssc.2009.12.011; PII: S0022-4596(09)00574-X; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM COMPOUNDS
BARIUM IONS
CERIUM IONS
DOPED MATERIALS
EMISSION SPECTRA
EUROPIUM IONS
EXCITATION
LUMINESCENCE
NITRIDES
PHOSPHORS
SILICATES
SILICON OXIDES
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
EMISSION
ENERGY-LEVEL TRANSITIONS
IONS
MATERIALS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
PNICTIDES
SILICON COMPOUNDS
SPECTRA