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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 19, Iss. S2 — Mar. 14, 2011
  • pp: A201–A206

Preparation, structural and luminescent properties of Ba2Gd2Si4O13:Eu3+ for white LEDs

Hai Guo, Hao Zhang, RongFei Wei, MengDi Zheng, and LiHong Zhang  »View Author Affiliations


Optics Express, Vol. 19, Issue S2, pp. A201-A206 (2011)
http://dx.doi.org/10.1364/OE.19.00A201


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Abstract

To find out efficient red phosphors used for white light-emitting diodes (LEDs), a new Ba2Gd2Si4O13:Eu3+ phosphor was prepared by conventional solid-state reaction method. The effect of Li2CO3 flux and Eu3+ doping concentrations on structural and luminescent properties of Ba2Gd2Si4O13 phosphors was studied in detail. The phosphors show intense absorption in near ultraviolet-blue region and exhibit intense red emissions with CIE coordinates of (0.66, 0.34) under 393 nm excitation. The integrated emission intensity of Ba2(Gd0.4Eu0.6)2Si4O13 excited at 393 nm, 362 nm and 464 nm is about 3.5, 4.0 and 3.1 times as that of Y2O3:Eu3+ commercial phosphors, respectively. The excellent luminescent properties and good color saturation make it a promising red phosphor for white LEDs.

© 2011 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Spectroscopy

History
Original Manuscript: January 4, 2011
Revised Manuscript: February 28, 2011
Manuscript Accepted: March 1, 2011
Published: March 11, 2011

Citation
Hai Guo, Hao Zhang, RongFei Wei, MengDi Zheng, and LiHong Zhang, "Preparation, structural and luminescent properties of Ba2Gd2Si4O13:Eu3+ for white LEDs," Opt. Express 19, A201-A206 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-S2-A201


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