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Article Dans Une Revue Journal of the European Ceramic Society Année : 2013

Elaboration and optimization of Ce-doped Y3Al5O12 nanopowder dispersions.

Nathalie Pradal
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Geneviève Chadeyron
MI
Audrey Potdevin
MI
Jérôme Deschamps
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MI
Rachid Mahiou
MI

Résumé

This work aims at achieving homogeneous luminescent films from Ce-doped yttrium aluminium garnet (YAG:Ce) phosphors dispersed in aqueous suspensions. Colloidal luminescent suspensions of YAG:Ce nanoparticles have been successfully prepared by a solvothermal process. Powder resulting from the dried as-synthesized suspension was submitted to different thermal treatments and a thorough study of nanoparticles aqueous suspensions has been carried out, for each thermal treatment. The influence of these treatments on the structural, morphological and optical properties of YAG:Ce nanopowders were studied by means of X-ray diffraction, infrared spectroscopy and transmission electron microscopy. Besides, particles size distribution and zeta potential of YAG:Ce aqueous suspensions in different pH conditions were investigated by dynamic light and electrophoretic light scatterings, respectively, in order to characterize suspensions stability. This study enabled us to optimize heat treatment and redispersion parameters in order to achieve very homogeneous luminescent films which can be used for display or mood lighting.
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Dates et versions

hal-00847469 , version 1 (23-07-2013)

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  • HAL Id : hal-00847469 , version 1

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Nathalie Pradal, Geneviève Chadeyron, Audrey Potdevin, Jérôme Deschamps, Rachid Mahiou. Elaboration and optimization of Ce-doped Y3Al5O12 nanopowder dispersions.. Journal of the European Ceramic Society, 2013, 33, pp.1935-1945. ⟨hal-00847469⟩
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