Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399262 | Journal of Luminescence | 2015 | 24 Pages |
Abstract
Europium single doped potassium lutetium tungstate Eu3+:KLu(WO4)2 single crystals have been grown with the top seeded solution growth slow cooling method. Their absorption spectra are studied in detail for principal light polarizations, E||Np, Nm and Ng at room and low temperatures. The absorption oscillator strengths parameters are calculated by means of the theory of f-f transition intensities for systems with anomalously strong configuration interaction and by Judd-Ofelt theory. The Ωt (t=2, 4, 6) intensity parameters, and the {Odk, Ock, Îd, Îc1 and Îc2} (k=1, 2, 3) ASCI parameters are calculated. The radiative transition rates AR, radiative lifetimes ÏR, and fluorescent branching ratios βR associated with 5D0-7FJ transitions of Eu3+ were determined. The calculated decay times are discussed and compared with experimental values.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
T. Koubaa, M. Dammak, M.C. Pujol, M. Aguiló, F. DÃaz,