Work

Spectral properties and self-reduction of Eu 3+ to Eu 2+ in aluminosilicate oxyfluoride glass

Year: 2023

Type: article

Abstract: Eu-doped aluminosilicate oxyfluoride glass prepared via a melt-quenching method was investigated by X-ray diffraction, absorption spectra, X-Ray Fluorescence Spectrometer, photoluminescence spectroscopy and fluorescence decay curves. We found that the reduction of Eu3+ to Eu2+ ions occurred in the glass prepared in air condition. The emission spectra showed that the intensity of 4f65d→4f7 transition of Eu2+ ions varied with increasing incident beam wavelength. Meanwhile, the fluorescence lifetimes of Eu3+: 5D0→7F2 monitored at 617 nm in the glass change with the variation of excitation wavelength. The energy transfer between Eu2+ and Eu3+ and the emission mechanisms of Eu2+ ions in the glass were also discussed.

Source: RSC Advances

DOI: 10.1039/d3ra03689h