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Synthesis and luminescence properties of colloidal lanthanide doped YVO4

Published online by Cambridge University Press:  21 March 2011

Arnaud Huignard ,
Thierry Gacoin ,
Frédéric Chaput ,
Jean-Pierre Boilot ,
Patrick Aschehoug  and
Bruno Viana
Arnaud Huignard
Affiliation:
Laboratoire de Physique de la Matière Condensée, UMR CNRS 7643, Ecole Polytechnique, 91128 Palaiseau, France
Thierry Gacoin
Affiliation:
Laboratoire de Physique de la Matière Condensée, UMR CNRS 7643, Ecole Polytechnique, 91128 Palaiseau, France
Frédéric Chaput
Affiliation:
Laboratoire de Physique de la Matière Condensée, UMR CNRS 7643, Ecole Polytechnique, 91128 Palaiseau, France
Jean-Pierre Boilot
Affiliation:
Laboratoire de Physique de la Matière Condensée, UMR CNRS 7643, Ecole Polytechnique, 91128 Palaiseau, France
Patrick Aschehoug
Affiliation:
Laboratoire de Chimie Appliquée de l'Etat Solide, UMR CNRS 7574, ENSCP, 75005 Paris, France
Bruno Viana
Affiliation:
Laboratoire de Chimie Appliquée de l'Etat Solide, UMR CNRS 7574, ENSCP, 75005 Paris, France
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Abstract

Aqueous colloidal solutions of well dispersed YVO4:Ln (Ln = Eu, Nd) nanoparticles are synthesized through precipitation reactions at room temperature. In the case of YVO4:Eu, a luminescence quantum yield of 15% is found, which is not as high as in the bulk due to the existence of residual crystalline defects and nonradiative relaxations from the hydroxylated surface. Appropriate hydrothermal annealing and deuteration of the surface allow to rise the yield up to 38%. Incorporation of the nanocrystals into a transparent silica matrix is achieved through preliminary coating of the particles with a functionnalized silicon alkoxide and further dispersion into a sol-gel precursor solution. Such sol-gel materials doped with YVO4:Nd nanocrystals are transparent and exhibit the typical emission at 1.06 μm of the Nd3+ ion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 667: Symposium G – Luminescence and Luminescent Materials , 2001 , G4.5
Copyright
Copyright © Materials Research Society 2001

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References

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