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  • Title: Spectroscopic investigation and optical characterization of Eu3+ ions in K-Nb-Si glasses.
    Author: Murali Mohan M, Rama Moorthy L, Ramachari D, Jayasankar CK.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2014 Jan 24; 118():966-71. PubMed ID: 24161859.
    Abstract:
    This paper reports on the effect of concentration of Eu(3+) ions in K2O-Nb2O5-SiO2-Eu2O3 (KNbSiEu) glasses prepared by the melt quenching technique. By using the Judd-Ofelt (JO) theory, the intensity parameters Ωλ (λ=2, 4, 6) have been determined from the absorption and emission spectra of Eu(3+) ions under different constraints. The radiative properties of some of the excited states of Eu(3+) ions have been calculated. The decay curves of (5)D0 level exhibited single exponential for all the Eu(3+) ions concentrations. From these results, it is suggested that the strong red emission at 616 nm corresponding to the (5)D0→(7)F2 transition could be used for the development of optical display devices.
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