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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 7 — Jul. 1, 2012
  • pp: 962–968

Synthesis and characterization of white light emitting CaxSr1-xAl2O4:Tb3+,Eu3+ phosphor for solid state lighting

Samy K. K. Shaat, Hendrik C. Swart, and Odireleng M. Ntwaeaborwa  »View Author Affiliations


Optical Materials Express, Vol. 2, Issue 7, pp. 962-968 (2012)
http://dx.doi.org/10.1364/OME.2.000962


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Abstract

A white light emitting CaxSr1-xAl2O4:Tb3+;Eu3+ phosphor was synthesized by a combustion method using metal nitrates as precursors and urea as a fuel. The X-ray diffraction patterns from the samples showed phases associated with monoclinic structures of CaAl2O4 and SrAl2O4. White photoluminescence with the CIE coordinates (x = 0.343, y = 0.325) was observed when the phosphor was optically-excited at 227 nm using a monochromatized xenon lamp. The white photoluminescence was a result of the combination of blue and green line emissions from Tb3+, and red line emission from Eu3+. The structure and photoluminescence properties of this phosphor are reported.

© 2012 OSA

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(250.5230) Optoelectronics : Photoluminescence
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: June 1, 2012
Revised Manuscript: June 17, 2012
Manuscript Accepted: June 20, 2012
Published: June 21, 2012

Citation
Samy K. K. Shaat, Hendrik C. Swart, and Odireleng M. Ntwaeaborwa, "Synthesis and characterization of white light emitting CaxSr1-xAl2O4:Tb3+,Eu3+ phosphor for solid state lighting," Opt. Mater. Express 2, 962-968 (2012)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-7-962


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