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Raman and luminescence spectroscopy study of europium doped zirconia

Published online by Cambridge University Press:  31 January 2011

James Ovenstone ,
Robert Withnall  and
Jack Silver
James Ovenstone*
Affiliation:
Kazuo Inamori School of Engineering, Alfred University, Alfred, New York 14802
Robert Withnall
Affiliation:
Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
Jack Silver
Affiliation:
Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A Raman spectrometer was used to probe the structure and luminescence of a range of europium-doped zirconia phosphors prepared by different routes. We have demonstrated that the synthesis method and precursor type have a strong influence on the structure and luminescence of the final phosphor product. Raman spectroscopy has also demonstrated the presence of local order around the dopant ions that is not apparent in x-ray diffraction (XRD) and corresponds with changes in luminescence. As europium concentration is increased from 1 mol% to 20 mol%, the long range structure (from XRD) changes from tetragonal to cubic. Raman spectroscopy, however, shows that the 1 mol% material has a localized structure similar to the monoclinic undoped zirconia. This localized symmetry can explain the differences observed previously in emission spectra.

Keywords

EuLuminescenceRaman spectroscopy
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 7 , July 2008 , pp. 1854 - 1861
Copyright
Copyright © Materials Research Society 2008

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References

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