Structural and optical characterizations of sol-gel-derived europium-doped YAG materials: powders and films

Damien Boyer; Genevieve Bertrand-Chadeyron; Rachid Mahiou

doi:10.1117/12.513748

25 February 2004 Structural and optical characterizations of sol-gel-derived europium-doped YAG materials: powders and films

Damien Boyer, Genevieve Bertrand-Chadeyron, Rachid Mahiou

Author Affiliations +

Proceedings Volume 5250, Advances in Optical Thin Films; (2004) https://doi.org/10.1117/12.513748
Event: Optical Systems Design, 2003, St. Etienne, France

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.

Citation Download Citation

Damien Boyer, Genevieve Bertrand-Chadeyron, and Rachid Mahiou "Structural and optical characterizations of sol-gel-derived europium-doped YAG materials: powders and films", Proc. SPIE 5250, Advances in Optical Thin Films, (25 February 2004); https://doi.org/10.1117/12.513748

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