T1 Ultraviolet and visible upconversion luminescence in Nd3+-doped oxyfluoride glasses and glass ceramics obtained by different preparation methods
A1 Lozano Gorrín, Antonio Diego
A1 Méndez Ramos, Jorge
A1 Abril, M.
A1 Martín Benenzuela, Inocencio Rafael
A1 Rodríguez Mendoza, Ulises Ruymán
A1 Lavín Della Ventura, Víctor
A1 Rodríguez Armas, Vicente Daniel
A1 Núñez Coello, Pedro Felipe
A2 Química
K1 ultraviolet
K1 luminescence
AB Ultraviolet and visible upconversion emissions under infrared excitation have been obtained and compared in Nd3+-doped oxyfluoride glasses and glass ceramics prepared by different methods. The mechanisms involved in such processes have been analyzed. A spectroscopy study comparing absorption and upconversion excitation spectra has been carried out in order to discern in each case the mechanism involved in the origin of the upconversion emissions, i.e., two- or three-photon involved excited state absorption or energy transfer processes. The shape of the absorption and emission spectra and the relative upconversion efficiencies have been compared and explained taking into account the final distribution of the luminescent ions in the glassy and nanocrystalline phases.
SN 0021-8979
YR 2006
FD 2006
LK http://riull.ull.es/xmlui/handle/915/40806
UL http://riull.ull.es/xmlui/handle/915/40806
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 17-mar-2025