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
Data d'alta del registre: 2025-02-08
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0022231316318361
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
DOI de l'article: 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