Study of the influence of Er/Ln co-doping in La2O3 thin films on their up-conversion properties (where Ln = Ho or Nd)

Cabello-Guzmán, G.; Caro-Díaz, C.; Fernandez-Perez, A.; Buono-Core, G.E.; Chornik, B.

Abstract

In this study we report significant enhancement of up-conversion emissions of La2O3:Er thin films when they are co-doped with Er/Ln (where Ln = Nd or Ho). The proposed mechanisms by which the Ln ions contribute to these emissions are based on different mechanistic routes. While the La2O3 samples co-doped with Er/Nd involves energy transfer Nd-III -> E-III processes, in the La2O3 samples co-doped with Er/Ho involves energy transfer Er-III -> Ho-III processes. All samples were synthesized by a solid state photochemical deposition method followed by a subsequent calcination process. The luminescent properties reveal that samples under 980 nm irradiation exhibit characteristic up-conversion emissions that are focused in the green region of the spectrum and that the nature of second activator (Ln) determines the degree of efficiency of these emissions.

Más información

Título según WOS: Study of the influence of Er/Ln co-doping in La2O3 thin films on their up-conversion properties (where Ln = Ho or Nd)
Título según SCOPUS: Study of the influence of Er/Ln co-doping in La2O3 thin films on their up-conversion properties (where Ln = Ho or Nd)
Volumen: 99
Fecha de publicación: 2020
Idioma: English
DOI:

10.1016/j.optmat.2019.109579

Notas: ISI, SCOPUS