Autor segons l'article: Loiko, P. A.; Vilejshikova, E. V.; Khaidukov, N. M.; Mendez-Ramos, J.; Mateos, X.; Yumashev, K. V.;
Departament: Química Física i Inorgànica
Autor/s de la URV: Mateos Ferré, Xavier
Paraules clau: Up-conversion Stimulated-emission Stimulated emission Refractive-index Rare-earth ions Mu-m Luminescence Laser crystals Judd-ofelt analysis Fluoride crystals Fluoride Erbium Electronic-spectra Cross-sections
Resum: Absorption and emission properties of Er3+ ions in a cubic elpasolite crystal, Cs2NaYF6, are modeled within the Judd-Ofelt (J-O) theory. The J-O intensity parameters have been determined: ohm(2) = 0.665, ohm(4) = 0.217 and ohm(6) = 0.029 x 10(-20) cm(2). The elpasolite structure of Cs2NaYF6 containing isolated [YF6] polyhedra allows high Er3+ doping levels up to 100 at% without considerable concentration quenching of luminescence and exceptionally long lifetimes of the excited states (in particular, the radiative lifetimes of the I-4(13/2) and I-4(11/2) states are as long as 36.7 ms and 113.4 ms, respectively). It also shows weak non radiative relaxation. Stimulated-emission cross-sections have been determined for the Er3+ transitions in Cs2NaYF6 at similar to 2.7 and similar to 1.5 m as well as in the visible spectral range. (C) 2017 Elsevier B.V. All rights reserved.
Àrees temàtiques: Química Optics Odontología Medicina ii Medicina i Materiais Interdisciplinar General chemistry Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Condensed matter physics Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciência de alimentos Chemistry (miscellaneous) Chemistry (all) Biotecnología Biophysics Biochemistry Atomic and molecular physics, and optics Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: xavier.mateos@urv.cat
Identificador de l'autor: 0000-0003-1940-1990
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Journal Of Luminescence. 185 279-285
Referència de l'ítem segons les normes APA: Loiko, P. A.; Vilejshikova, E. V.; Khaidukov, N. M.; Mendez-Ramos, J.; Mateos, X.; Yumashev, K. V.; (2017). Judd-Ofelt modeling, emission lifetimes and non-radiative relaxation for Er3+ doped Cs2NaYF6 elpasolite crystals. Journal Of Luminescence, 185(), 279-285. DOI: 10.1016/j.jlumin.2017.01.036
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2017
Tipus de publicació: Journal Publications
Repositori URV