Broadband near-infrared luminescence from Fe3+-activated NaScSi2O6 phosphors for luminescence thermometry and night-vision applications.
Dalton Trans
; 51(37): 14243-14249, 2022 Sep 26.
Article
em En
| MEDLINE
| ID: mdl-36065972
ABSTRACT
Broadband near-infrared (NIR) materials have recently evoked considerable interest for versatile applications, but the choices of efficient emitters for NIR phosphors are rather limited. Herein, an Fe3+-activated NaScSi2O6 phosphor has been successfully synthesized by a solid-state reaction method. A broad NIR emission band is observed at 900 nm when excited at 300 nm ultraviolet light, reaching a full-width at half maximum (FWHM) of 135 nm and an internal quantum efficiency (IQE) of 13.3%. The luminescence is related to 3d-3d transitions of Fe3+ in the octahedral site, and verifies the effectiveness of the Fe3+ activator in realizing efficient NIR emission. The emission intensity of Fe3+ ions shows a linear quenching tendency in the temperature range of 293-433 K. The feasibility of the as-synthesized phosphors in applications such as NIR luminescence thermometry and NIR patches was also investigated.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Dalton Trans
Assunto da revista:
QUIMICA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China