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

Xinguo Zhang; Daiwen Chen; Xin Chen; Cai Zhou; Peichan Chen; Qi Pang; Liya Zhou

doi:10.1039/d2dt02329f

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

Dalton Trans. 2022 Sep 26;51(37):14243-14249. doi: 10.1039/d2dt02329f.

Authors

Xinguo Zhang^{1

2}, Daiwen Chen³, Xin Chen¹, Cai Zhou¹, Peichan Chen³, Qi Pang³, Liya Zhou³

Affiliations

¹ Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China. mpcc1@qq.com.
² NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China.
³ School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.

PMID: 36065972
DOI: 10.1039/d2dt02329f

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.