Issue 20, 2024

Thermally stable NIR broad emission of Cr3+ doping phosphor with a high output power

Abstract

The development of high-performance near-infrared (NIR) luminescent materials remains a significant challenge, particularly in enhancing thermal stability. Herein, we observed an anti-thermal quenching effect in the YGa1.5Al1.5(BO3)4:Cr3+ phosphor, with its emission intensity reaching 104% at 423 K and 101% at 483 K compared to room temperature. This anti-thermal quenching is mainly attributed to thermal-induced emission compensation resulting from excited electrons trapped at crystal defects, as confirmed by density functional theory computation. Additionally, YGa1.5Al1.5(BO3)4:Cr3+ exhibits a broad NIR emission peaking at 760 nm with a full width at half maximum of 135 nm and a high photoluminescence quantum yield (86%). As a proof-of-concept, we fabricated an NIR phosphor-converted light-emitting diode device that achieves an NIR output power of 59.67 mW with an input working current of 150 mA, demonstrating a photoelectric conversion efficiency of 13.6%. The utilization of this high-power NIR light-emitting diode device as a lighting source enables a penetration depth of up to 15 mm, demonstrating the potential applications of Cr3+-doped YGa1.5Al1.5(BO3)4:Cr3+ phosphors for non-invasive detection of biological tissue.

Graphical abstract: Thermally stable NIR broad emission of Cr3+ doping phosphor with a high output power

Supplementary files

Article information

Article type
Research Article
Submitted
09 iyl 2024
Accepted
16 avq 2024
First published
22 avq 2024

Inorg. Chem. Front., 2024,11, 6898-6908

Thermally stable NIR broad emission of Cr3+ doping phosphor with a high output power

Z. Chen, S. Zhang, Z. Li, H. Ye, H. Yan, J. Xu, L. Gao, Y. Li and S. Zhang, Inorg. Chem. Front., 2024, 11, 6898 DOI: 10.1039/D4QI01728E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements