Effect of the addition of Al 2 O 3 , TiO 2 and ZnO on the thermal, structural and luminescence properties of Er 3+ -doped phosphate glasses

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Journal of Non-Crystalline Solids, ISSN: 0022-3093, Vol: 460, Page: 161-168

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Pablo Lopez-Iscoa; Laeticia Petit; Jonathan Massera; Davide Janner; Nadia G. Boetti; Diego Pugliese; Sonia Fiorilli; Chiara Novara; Fabrizio Giorgis; Daniel Milanese
Elsevier BV
Materials Science; Physics and Astronomy
article description
Er-doped phosphate glasses were fabricated by melt-quenching technique. The changes in their thermal, structural and luminescence properties with the addition of Al 2 O 3, TiO 2 or ZnO were studied. Physical and thermal properties were investigated through density measurement and differential thermal analysis. Structural characterization was performed using the Raman and Infrared spectroscopy. In order to study the influence of the composition on the luminescence properties of the glasses, the refractive index, the luminescence spectra and the lifetime values were measured. The results show that with the addition of Al 2 O 3 and TiO 2 the phosphate network becomes more connected increasing the glass transition temperature, whereas the addition of ZnO does not show significant changes in the optical, thermal and structural properties but it leads to a larger emission cross-section at 1540 nm as compared to the other glasses. As the site of the Er 3+ is not strongly affected by the change in the glass composition, we think that the emission properties of the glasses depend on the glass structure connectivity, which has an impact on the Er 3+ ions solubility.