Investigation of the local environment of Eu 3+ in a silicophosphate glass using site-selective spectroscopy and Molecular Dynamics simulations
| Autor: | Stéphane Chaussedent, Mohamed Haouari, N. Gaumer, Xavier Bidault, P. Raso, H. Ben Ouada, Jérémy Turlier, D. Guichaoua, F. Ben Slimen |
|---|---|
| Přispěvatelé: | Laboratoire de Photonique d'Angers (LPHIA), Université d'Angers (UA) |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mineralogy chemistry.chemical_element 02 engineering and technology Molecular dynamics 010402 general chemistry 01 natural sciences Spectral line Ion Inorganic Chemistry luminescence Sol-gels Rare-earth Emission spectrum Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy [PHYS]Physics [physics] Organic Chemistry Doping 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical physics Silicate glasses 0210 nano-technology Europium Luminescence |
| Zdroj: | Optical Materials Optical Materials, 2017, 64, pp.479-488. ⟨10.1016/j.optmat.2017.01.002⟩ |
| ISSN: | 0925-3467 1873-1252 |
| DOI: | 10.1016/j.optmat.2017.01.002 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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