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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S2 — Mar. 10, 2014
  • pp: A446–A451

A study on luminescence properties and energy transfer mechanism for NaCaY(PO4)2:Eu2+,Mn2+ phosphors for LED applications

Wei-Ren Liu and Pin-Chun Lin  »View Author Affiliations

Optics Express, Vol. 22, Issue S2, pp. A446-A451 (2014)

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A color-tunable NaCaY(PO4)2:Eu2+, Mn2+ was synthesized by a solid state reaction. NaCaY(PO4)2 crystallizes in the hexagonal structure system with space group of P6222 and Z = 1. The NaCaY(PO4)2:Eu2+ exhibits blue-greenish emission and broad excitation bands corresponding to the allowed fd electronic transition of Eu2+. In addition, via the design of efficient energy transfer from Eu2+ to Mn2+, a high quality of white-emitting light could be generated in the optimized composition of NaCaY(PO4)2:1%Eu2+, 0.5%Mn2+ with CIE coordinates of (0.3389,0.3531) and CRI of 82, which is superior than that of blue chip and YAG phosphors. The results indicate that as-synthesized NaCaY(PO4)2:Eu2+, Mn2+ phosphors exhibits the potential to be an n-UV convertible phosphor.

© 2014 Optical Society of America

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

ToC Category:

Original Manuscript: October 8, 2013
Revised Manuscript: January 10, 2014
Manuscript Accepted: January 14, 2014
Published: February 21, 2014

Wei-Ren Liu and Pin-Chun Lin, "A study on luminescence properties and energy transfer mechanism for NaCaY(PO4)2:Eu2+,Mn2+ phosphors for LED applications," Opt. Express 22, A446-A451 (2014)

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