Dual-mode optical thermometry design in K3YSi2O7:Eu multi-site phosphor.
Opt Lett
; 47(14): 3415-3418, 2022 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-35838693
ABSTRACT
In this study, a dual-mode optical thermometer is designed based on radiative transitions from Eu3+ and Eu2+ ions at different K3YSi2O7 lattice sites. In the luminescence-intensity-ratio strategy, a ratiometric signal composed of Eu3+5D0â7F1 and Eu3+5D0â7F2 emissions at 593 and 616â
nm, respectively, is employed. Meanwhile, the intensity ratio of the 593-nm emission under O2-âEu3+ charge transfer excitation (λex = 249â
nm) to that upon Eu2+4f7â4f65d1 excitation (λex = 349â
nm) is selected as a thermometric parameter in the single-band-ratio approach. The study findings show that combining the two strategies is conducive to the improvements in sensing-sensitive and anti-interference performance.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article