Author, as appears in the article.: X. Mateos; P.A. Loiko; E.V. Vilejshikova; J.M. Serres; E.B. Dunina ; A.A. Kornienko; K.V. Yumashev; M. Aguiló ; F. Díaz
Department: Química Física i Inorgànica
URV's Author/s: MATEOS FERRÉ, XAVIER; P.A. Loiko; E.V. Vilejshikova; J.M. Serres; E.B. Dunina ; A.A. Kornienko; K.V. Yumashev; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
Keywords: absorption luminescence Europium
Abstract: 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.
Research group: Física i Cristal.lografia de Materials Física i Cristal·lografia de Nanomaterials
Thematic Areas: Química Química Chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0022-2313
Author identifier: 0000-0003-1940-1990; 0000-0002-4270-0668; n/a; 0000-0002-4299-538X; n/a; n/a; n/a; 0000-0001-6130-9579; 0000-0003-4581-4967
Record's date: 2016-12-13
Last page: 225
Journal volume: 183
Papper version: info:eu-repo/semantics/submittedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
First page: 217
Publication Type: Article Artículo Article
Repositori URV