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Proceedings Paper

Structural and optical characterizations of sol-gel-derived europium-doped YAG materials: powders and films
Author(s): Damien Boyer; Genevieve Bertrand-Chadeyron; Rachid Mahiou
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Paper Abstract

Sol-gel route has been successfully achieved to obtain pure Y3Al5O12 and Y3Al5O12:Eu3+ powders and films. Advanced YAG coatings were achieved by two techniques, the spray and dip-coating methods, giving rise to different characteristics and properties. The materials structure and microstructure were analyzed by means of X-ray diffraction and scanning electron microscopy. It has been shown that sol-gel processed YAG powders crystallize around 900°C whereas a temperature much higher is necessary to obtain this compound by solid state synthesis (≈ 1500°C). Additionally the surface of the films was observed by atomic force microscopy. Eventually, laser induced luminescence spectra, as well as luminescence decays of Eu3+ ions show undoubtedly the spectral features of a Eu3+ emitting centre embedded in a unique site of D2 symmetry.

Paper Details

Date Published: 25 February 2004
PDF: 8 pages
Proc. SPIE 5250, Advances in Optical Thin Films, (25 February 2004); doi: 10.1117/12.513748
Show Author Affiliations
Damien Boyer, Lab. des Materiaux Inorganiques, CNRS-Univ. Blaise Pascal (France)
Genevieve Bertrand-Chadeyron, Lab. des Materiaux Inorganiques, CNRS-Univ. Blaise Pascal (France)
Rachid Mahiou, Lab. des Materiaux Inorganiques, CNRS-Univ. Blaise Pascal (France)

Published in SPIE Proceedings Vol. 5250:
Advances in Optical Thin Films
Claude Amra; Norbert Kaiser; H. Angus Macleod, Editor(s)

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