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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 19 — Sep. 10, 2012
  • pp: 21656–21664

Tunable luminescence Y3Al5O12:0.06Ce3+, xMn2+ phosphors with different charge compensators for warm white light emitting diodes

Yurong Shi, Yuhua Wang, Yan Wen, Zhengyan Zhao, Bitao Liu, and Zhigang Yang  »View Author Affiliations


Optics Express, Vol. 20, Issue 19, pp. 21656-21664 (2012)
http://dx.doi.org/10.1364/OE.20.021656


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Abstract

Abstract: Y3Al5O12:0.06Ce3+, xMn2+ (YAG:0.06Ce,xMn) phosphors have been synthesized and the effect of different charge compensators on the color adjustment has been investigated for the first time. The luminescence properties of Mn2+ singly doped and co-doped with Ce3+ into YAG host have been discussed. It is observed that in singly doped sample, Mn2+ ions not only occupy two kinds of Al3+ sites to generate a yellow and a deep red emission bands, but also occupy Y3+ sites to obtain a green emission band in YAG host. Considering Mn2+ substitution for Al3+, quadrivalence ions including Zr4+, Ge4+ and Si4+ ions are introduced to balance the charge difference. The results show that Si4+ as charge compensator exhibits the best tunable effect on controlling the Mn2+ emissions in YAG:0.06Ce, xMn. In Si4+-Mn2+ co-doped samples, the emission color can be tuned from greenish-yellow to red with increasing the content of Mn2+. The Commission International de L’Eclairage (CIE) chromaticity coordinates are also investigated.

© 2012 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(250.5230) Optoelectronics : Photoluminescence

ToC Category:
Optical Devices

History
Original Manuscript: June 20, 2012
Revised Manuscript: July 28, 2012
Manuscript Accepted: July 31, 2012
Published: September 6, 2012

Citation
Yurong Shi, Yuhua Wang, Yan Wen, Zhengyan Zhao, Bitao Liu, and Zhigang Yang, "Tunable luminescence Y3Al5O12:0.06Ce3+, xMn2+ phosphors with different charge compensators for warm white light emitting diodes," Opt. Express 20, 21656-21664 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-19-21656


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