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Facile method of infilling photonic silica templates with rare earth element oxide phosphor precursors

Published online by Cambridge University Press:  03 March 2011

J. Silver ,
T.G. Ireland  and
R. Withnall
J. Silver*
Affiliation:
Centre for Phosphors and Display Materials, Chemical and Life Sciences, University of Greenwich, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom
T.G. Ireland
Affiliation:
Centre for Phosphors and Display Materials, Chemical and Life Sciences, University of Greenwich, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom
R. Withnall
Affiliation:
Centre for Phosphors and Display Materials, Chemical and Life Sciences, University of Greenwich, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom
*
a)Address all correspondence to these authors.e-mail: J.Silver@gre.ac.uk
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Abstract

A method for preparing rare-earth element-doped yttrium oxide phosphor photonic band gap crystals (PBG) is described, which obviates the necessity for multiple infilling of the opal-like template. The method utilizes (i) the re-dissolving and the concentration of previously precipitated spherical phosphor particles made by homogeneous precipitation methods into a viscous precursor phosphor solution, and (ii) formation of an opal-like template of polystyrene or silica spheres. A procedure is outlined that permits the precursor solution to be drawn into the template in a controlled manner that can be easily monitored using an optical microscope. Attenuation of the strong, red cathodoluminescent emission is observed in Y2O3:Eu3+ phosphor PBG crystals that are engineered to have a stopband overlapping the emission bands in the red region. This attenuation results from Bragg diffraction of the light emitted within the PBG phosphor crystals.

Keywords

PhosphorSynthesisPhotonic crystal
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 6 , June 2004 , pp. 1656 - 1661
Copyright
Copyright © Materials Research Society 2004

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References

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