Structure and fluorescence properties of Dy-doped alkaline-earth borophosphate glasses
[EN] Dysprosium- doped borophosphate glasses, containing the divalent cations Mg2+, Ca2+, Sr2+, Ba2+, and Zn2+, are prepared by the melt- quenching technique. The struc-ture of the glasses is investigated by Raman, infrared, and nuclear magnetic resonance (NMR) spectroscopies and the fluorescence pr...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/266735 |
| Acesso em linha: | http://hdl.handle.net/10261/266735 |
| Access Level: | acceso abierto |
| Palavra-chave: | Borophosphate glasses Dysprosium Far infrared spectroscopy Luminescence Raman spectroscopy |
| Resumo: | [EN] Dysprosium- doped borophosphate glasses, containing the divalent cations Mg2+, Ca2+, Sr2+, Ba2+, and Zn2+, are prepared by the melt- quenching technique. The struc-ture of the glasses is investigated by Raman, infrared, and nuclear magnetic resonance (NMR) spectroscopies and the fluorescence properties are determined. The Dy3+emission lifetime increases with an increasing ionic field strength and its maximum is observed in the Mg2+ and Zn2+ containing glasses. This result can be explained by the stronger M- O bonding which causes a rearrangement of the borophosphate network and creates a local Dy3+ environment of comparably low symmetry. This is in agree-ment with the Raman spectra and the evolution of the molar volume. The effect of the B/P variation on the emission properties of Dy3+ is investigated in a second series of glasses where the emission lifetime is found to be maximum at 10 mol% B2O3 |
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