The highly efficient and stable near-infrared phosphor Ca3MgSnGe3O12: Cr3+ for multifunctional application

IF 6.7 2区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Materials Today Chemistry Pub Date : 2024-09-01 DOI:10.1016/j.mtchem.2024.102288

Xiuxiu Feng, Zhijun Wang, Zekang Yan, Mengdi Liu, Jie Gong, Ting Zhang, Xiaojie Li, Panlai Li

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引用次数: 0

Abstract

The investigation of efficient and stable near-infrared (NIR) luminescent materials is crucial for rapidly developing near-infrared spectroscopic techniques. Herein, NIR phosphors CaMgSnGeO: Cr with ultra thermal stability and high internal quantum yield (IQY) are explored. The emission intensity remained at 91.75 %@423 K of room temperature and the IQY/EQE reaches 91.41 %/34.04 % after doping the HBO flux agent for optimization. Moreover, a single luminescence center was identified by cryogenic photo luminescence spectroscopy (PL) from 4 K to 300 K and lifetime decay curve. Importantly, NIR light can easily removes all kinds of background interference that cannot be easily eliminated by visible light, which is not only widely used in night vision and biological tissue penetration, but also has higher application prospects in NIR fingerprint detection. Moreover, it clearly displays high level of fingerprint details under high temperature conditions and after water immersion, thus it is perfectly suited for using in Automatic Fingerprint Identification System (AFIS) systems. Therefore, CaMgSnGeO: Cr NIR pc-LEDs have great potential for latent fingerprint detection at actual crime scenes.

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用于多功能应用的高效稳定近红外荧光粉 Ca3MgSnGe3O12: Cr3+

研究高效稳定的近红外（NIR）发光材料对于快速发展近红外光谱技术至关重要。在此，具有超高热稳定性和高内量子产率（IQY）的近红外荧光粉 CaMgSnGeO：Cr具有超热稳定性和高内部量子产率（IQY）。在掺入 HBO 通量剂进行优化后，发射强度保持在 91.75 %@423 K（室温），IQY/EQE 分别达到 91.41 %/34.04 %。此外，通过低温光致发光光谱（PL）和寿命衰减曲线，还确定了从 4 K 到 300 K 的单个发光中心。重要的是，近红外光能轻松消除可见光不易消除的各种背景干扰，不仅广泛应用于夜视和生物组织穿透，在近红外指纹检测方面也有较高的应用前景。此外，它还能在高温条件下和浸水后清晰显示高水平的指纹细节，因此非常适合用于自动指纹识别系统（AFIS）。因此，CaMgSnGeO：Cr 近红外 pc-LED 在实际犯罪现场的潜伏指纹检测中具有巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Today Chemistry Multiple-

CiteScore

8.90

自引率

6.80%

发文量

596

审稿时长

33 days

期刊介绍： Materials Today Chemistry is a multi-disciplinary journal dedicated to all facets of materials chemistry. This field represents one of the fastest-growing areas of science, involving the application of chemistry-based techniques to the study of materials. It encompasses materials synthesis and behavior, as well as the intricate relationships between material structure and properties at the atomic and molecular scale. Materials Today Chemistry serves as a high-impact platform for discussing research that propels the field forward through groundbreaking discoveries and innovative techniques.