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Preparation and optical properties of Eu-doped Y2O3–Al2O3–SiO2 glass
Ist Teil von
Materials research bulletin, 2013-10, Vol.48 (10), p.3934-3938
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
•Eu-YAS glass shows good transparency from ultraviolet to infrared region.•Eu-YAS glass exhibits characteristic orange emissions of Eu3+.•Violet-blue broad emission of 4f–5d transitions of Eu2+ is observed.
Eu-doped Y2O3–Al2O3–SiO2 (YAS) glass with good transparency from ultraviolet to infrared region was prepared by furnace-cooling with a cooling rate (<0.5°C/s) much lower than those (>102°C/s) in conventional quenching approaches. The bulk density of Eu-doped YAS glass increased with increasing concentration of Eu2O3 and showed a linear dependence on the latter. Under ultraviolet excitations, the Eu-doped YAS glasses exhibited characteristic orange emissions of Eu3+ and the maximum emission intensity was obtained with Eu/(Y+Eu)=0.09. Under excitation at 363nm, a broad emission peak in violet-blue region was also observed, which was assigned to 4f–5d transitions of Eu2+.