A novel extra-broadband visible-NIR phosphor doped with Ce3+ and Cr3+ towards multifunctional advanced applications. Issue 7 (1st April 2023)

• Record Type: Journal Article
• Authors: Hou, Dejian; Lin, Huihong; Zhang, Yi; Lin, Zhenxu; Li, Hongliang; Song, Jie; Dong, Jianhong; Li, Jin-Yan; Huang, Rui
• Is Part Of: Ceramics international. Volume 49:Issue 7(2023)
• Page Start: 10692
• Page End: 10701
• Publication Date: 2023-04-01
• Subjects: Optical properties -- Visible-NIR phosphor -- Pc-LEDs -- Ce3+ -- Cr3+; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.11.259
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Phosphors that can emit broadband light from visible to near infrared (NIR) may have applications in the fields like white-light illumination and NIR vessel visualization, the investigation on single phase extra-broadband visible-NIR emitting phosphor is of great significance. Herein, an extra-broadband phosphor with tunable visible-NIR emission from 500 nm to longer than 900 nm (bandwidth >400 nm) was successfully prepared, which originates from the emission of Ce 3+ (peaking at 573 nm), Cr 3+ (peaking at 750 nm) and energy transfer from Ce 3+ to Cr 3+ in Y3 MgAl3 SiO12 garnet. The influences of Ce 3+ /Cr 3+ doping concentration and working temperature were discussed systematically by luminescence spectra and decay curves. A visible-NIR full-spectrum phosphor-converted light emitting diode (pc-LED) fabricated with a 460 nm LED chip and Y3 MgAl3 SiO12 :0.03Ce 3+, 0.01Cr 3+ can generate bright white light and broadband NIR light simultaneously. The co-doping of Ce 3+ can perfectly compensate for the missing spectrum of Cr 3+ in the visible region, thanks to the extra-broadband emission of Ce 3+ in visible region and Cr 3+ in NIR region, multifunctional advanced applications may be realized for the prepared phosphors.