Issue 24, 2021

Broadband near-infrared BaMSi3O9:Cr3+ (M = Zr, Sn, Hf) phosphors for light-emitting diode applications

Abstract

A series of Cr3+-doped BaMSi3O9 (M = Zr, Sn, Hf) near-infrared emitting phosphors with tunable luminescence properties have been successfully synthesized by using a simple solid-state reaction method. The developed BaMSi3O9:Cr3+ phosphors show a broad near-infrared emission band ranging from 650 nm to 1200 nm with a peak wavelength longer than 800 nm and a full width at half maximum (FWHM) of more than 155 nm upon blue light excitation. The optimized phosphor also demonstrates good thermal stability, whose emission intensity at 150 °C can retain about 59% of its initial intensity at room temperature. The near-infrared LED prototypes constructed by combining the BaMSi3O9:Cr3+ phosphor with a blue LED chip give a maximum output power of 12.19 mW at a drive current of 320 mA. By using the fabricated near-infrared LED device as a lighting source, night-vision lighting and blood vessel imaging of human fingers and arms are successfully realized, demonstrating the great potential of BaMSi3O9:Cr3+ phosphors for near-infrared LED applications.

Graphical abstract: Broadband near-infrared BaMSi3O9:Cr3+ (M = Zr, Sn, Hf) phosphors for light-emitting diode applications

Supplementary files

Article information

Article type
Research Article
Submitted
24 août 2021
Accepted
12 oct. 2021
First published
13 oct. 2021

Inorg. Chem. Front., 2021,8, 5186-5194

Broadband near-infrared BaMSi3O9:Cr3+ (M = Zr, Sn, Hf) phosphors for light-emitting diode applications

Y. Zhang, Y. Liang, S. Miao, D. Chen, S. Yan and J. Liu, Inorg. Chem. Front., 2021, 8, 5186 DOI: 10.1039/D1QI01082D

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