Europium doping in monoclinic KYb(WO4)2 crystal
In: Journal of Luminescence; (2017)
Online
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Zugriff:
DOI: 10.1016/j.jlumin.2016.11.046 URL: http://www.sciencedirect.com/science/article/pii/S0022231316313291 Filiació URV: SI Inclòs a la memòria: SI We report on a detailed spectroscopic study of Eu3+ ions in the monoclinic KYb(WO4)2 crystal. The polarized room and low-temperature absorption spectra are measured. The maximum ¿abs corresponding to the 7F1 ¿ 5D1 transition is 1.32×10¿20 cm2 at 534.2 nm with a bandwidth of 0.7 nm (for E||Nm). The Stark sub-levels of the excited mulitplets are determined. A Judd-Ofelt analysis is applied to the Eu3+:KYb(WO4)2 crystal to determine the probability of spontaneous transitions, radiative lifetimes and luminescence branching ratios. Within the strong configuration interaction (SCI) approximation, the intensity parameters are ¿2=4.757, ¿4=2.295, ¿6=1.644 [10¿20 cm2] and ¿f=50160 cm¿1. The radiative lifetime of the 5D0 state is 351 µs. The maximum stimulated-emission cross-section corresponding to the 7F1 ¿ 5D1 transition is 1.44×10¿20 cm2 at 703.2 nm (for E||Nm). Under UV excitation, the Eu3+:KYb(WO4)2 crystal provides intense red photoluminescence with CIE coordinates, x=0.675, y=0.325.
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Europium doping in monoclinic KYb(WO4)2 crystal
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Autor/in / Beteiligte Person: | Mateos, X. ; Loiko, P.A. ; Vilejshikova, E.V. ; Serres, J.M. ; Dunina, E.B. ; Kornienko, A.A. ; Yumashev, K.V. ; Aguiló, M. ; Díaz, F. ; Física i Cristal.lografia de Materials ; Física i Cristal·lografia de Nanomaterials ; Química Física i Inorgànica ; Universitat Rovira i Virgili |
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Quelle: | Journal of Luminescence; (2017) |
Veröffentlichung: | elsevier, 2017 |
Medientyp: | unknown |
ISSN: | 0022-2313 (print) |
DOI: | 10.1016/j.jlumin.2016.11.046 |
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