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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 4 — Feb. 13, 2012
  • pp: 4360–4368

Novel yellow-emitting phosphors of Ca5M4(VO4)6 (M=Mg, Zn) with isolated VO4 tetrahedra

Yanlin Huang, Young Moon Yu, Taiju Tsuboi, and Hyo Jin Seo  »View Author Affiliations


Optics Express, Vol. 20, Issue 4, pp. 4360-4368 (2012)
http://dx.doi.org/10.1364/OE.20.004360


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Abstract

The self-activated yellow-emitting phosphors of vanadates Ca5M4(VO4)6 (M = Mg, Zn) were synthesized via the solid-state reaction route. The formation of single phase compound with garnet structure was verified through X-ray diffraction (XRD) studies. The excitation and emission spectra and the thermal quenching of luminescence intensities were measured. The different luminescence properties of Ca5Mg4(VO4)6 and Ca5Zn4(VO4)6 phosphors were presented, e.g., the spectra shift, the luminescence lifetimes, the absolute quantum efficiency, the color coordinates and the Stokes shift. This deference was discussed on the base of the relationship between the micro-structure and the charge transfer transitions in [VO4]3- groups in the lattices. Ca5Mg4(VO4)6 could be suggested to be a potential yellow-emitting phosphor for the application on near-UV excited white LEDs.

© 2012 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(250.5230) Optoelectronics : Photoluminescence
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Materials

History
Original Manuscript: December 15, 2011
Revised Manuscript: January 26, 2012
Manuscript Accepted: January 27, 2012
Published: February 7, 2012

Citation
Yanlin Huang, Young Moon Yu, Taiju Tsuboi, and Hyo Jin Seo, "Novel yellow-emitting phosphors of Ca5M4(VO4)6 (M=Mg, Zn) with isolated VO4 tetrahedra," Opt. Express 20, 4360-4368 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-4360


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