Issue 37, 2022

Broadband near-infrared luminescence from Fe3+-activated NaScSi2O6 phosphors for luminescence thermometry and night-vision applications

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 3dā€“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 293ā€“433 K. The feasibility of the as-synthesized phosphors in applications such as NIR luminescence thermometry and NIR patches was also investigated.

Graphical abstract: Broadband near-infrared luminescence from Fe3+-activated NaScSi2O6 phosphors for luminescence thermometry and night-vision applications

Article information

Article type
Paper
Submitted
18 Jul 2022
Accepted
23 Aug 2022
First published
23 Aug 2022

Dalton Trans., 2022,51, 14243-14249

Broadband near-infrared luminescence from Fe3+-activated NaScSi2O6 phosphors for luminescence thermometry and night-vision applications

X. Zhang, D. Chen, X. Chen, C. Zhou, P. Chen, Q. Pang and L. Zhou, Dalton Trans., 2022, 51, 14243 DOI: 10.1039/D2DT02329F

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