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Abstract
The spectroscopy properties of lanthanide ions in glasses differ remarkably from crystal and powder samples due to superposition of transitions from many ions with different local environments. Eu3+ ions were doped in lead–borosilicate and boro–tellurite glass samples to probe the structural information and to reveal their effects on the luminescent properties of lanthanide ions. Three emission peaks were observed for 5D0→7F0 transition, with peak energies linearly dependent on the excitation wavelengths, and correlation between the intensity ratio of 5D0→7F0 versus 5D0→7F2 and the width of 7F1 was observed. The former indicates that there are three subsets of Eu3+ sites in the samples, with 7F0 being pushed downwards by 7FJ (J=2, 4, and 6) by crystal-field J-mixing, and the latter can be quantitatively modeled by the adaptation of the theoretical model of Wen et al. [Phys. Chem. Chem. Phys. 12, 9933 (2010)] to account for the corrections due to the inhomogeneous broadening of 7FJ (J=0, and1) crystal-field levels. The methods explored here can be applied to study other glass hosts for luminescent materials.
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