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Influence of Thermal Treatment on Optical and Structure Properties of Europium-Doped SiO2–HfO2 Glasses

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Eu3+-doped SiO2–HfO2 glasses for optical applications were prepared using sol–gel technology. The effect of heat treatment on structure, emission properties and decay kinetics was investigated. The results show that the energy splitting of the 7F2 state of Eu3+ ions occurs for the samples sintered at temperatures >1000°C. This behavior can be explained by the fact that crystal phases are formed in those samples, which can be confirmed by X-ray diffraction analysis. Moreover, fluorescence line narrowing spectra for the samples sintered at different temperatures were measured, and the results were interpreted in terms of structural changes in the glass matrix and the Eu3+ bonding environment.
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Document Type: Research Article

Affiliations: Laboratoire des Propriétés Optiques des Matériaux et Applications (POMA), FRE CNRS 2988, Université d'Angers, 49045 Angers Cedex 01, France

Publication date: 2010-04-01

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