Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Investigation of the local environment of Eu3+ in a silicophosphate glass using site-selective spectroscopy and Molecular Dynamics simulations

Abstract :

Silicophosphate glasses (SiO2-P2O5) doped with Eu3+ ions were synthesized by the sol-gel process. Optical properties of these glasses were investigated by means of emission spectra and lifetime measurements. The Fluorescence Line Narrowing (FLN) technique was also used to explore the local structure around the Eu3+ ions in this host and to understand the role of phosphate as a codopant. As it is the case for aluminum, the ability of phosphate to avoid the rare earth clustering was investigated, and the role of this codopant in modifying the local order around the rare earth ion was evidenced. The analysis of the FLN spectra and lifetime measurements is consistent with this interpretation. Molecular Dynamics simulations were performed to evaluate and confirm these structural features. Two classes of europium sites were distinguished in agreement with the experimental characterization.

Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.univ-angers.fr/hal-02572722
Contributeur : Okina Université d'Angers <>
Soumis le : mercredi 13 mai 2020 - 18:16:14
Dernière modification le : mardi 6 octobre 2020 - 10:52:07

Identifiants

Collections

Citation

P. Raso, Xavier Bidault, J. Turlier, Nathalie Gaumer, Stéphane Chaussedent, et al.. Investigation of the local environment of Eu3+ in a silicophosphate glass using site-selective spectroscopy and Molecular Dynamics simulations. Optical Materials , 2017, 64, pp.479-488. ⟨10.1016/j.optmat.2017.01.002⟩. ⟨hal-02572722⟩

Partager

Métriques

Consultations de la notice

18