用于发光测温及夜视应用的铁激活NaScSiO磷光体的宽带近红外发光

Broadband near-infrared luminescence from Fe-activated NaScSiO phosphors for luminescence thermometry and night-vision applications.

作者信息

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

机构信息

Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China.

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.

出版信息

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

DOI:10.1039/d2dt02329f

PMID: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 Fe-activated NaScSiO 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 Fe in the octahedral site, and verifies the effectiveness of the Fe activator in realizing efficient NIR emission. The emission intensity of Fe 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.

摘要

宽带近红外（NIR）材料最近因其广泛的应用而引起了相当大的关注，但用于近红外磷光体的高效发光体选择相当有限。在此，通过固态反应法成功合成了一种铁激活的NaScSiO磷光体。当在300nm紫外光激发时，在900nm处观察到一个宽的近红外发射带，半高宽（FWHM）达到135nm，内量子效率（IQE）为13.3%。发光与八面体位置中铁的3d-3d跃迁有关，并验证了铁激活剂在实现高效近红外发射方面的有效性。在293-433K温度范围内，铁离子的发射强度呈现线性猝灭趋势。还研究了合成的磷光体在近红外发光测温法和近红外贴片等应用中的可行性。