Effects of Re3+ (Re = Y, La, Gd) Co-doping on Luminescence Properties of MSi2O2N2:Eu2+ (M = Ca, Sr) Phosphors

• Published in: Journal of electronic materials Vol. 53; no. 8; pp. 4880 - 4885
• Main Authors: Wei, Tao, Wang, Long, Xu, Heyun, Deng, Chaoyong, Long, Fei, Li, Xucheng
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2024; Springer Nature B.V
• Subjects: Calcium; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Crystal lattices; Dopants; Doping; Efficiency; Electronics and Microelectronics; Europium; Gadolinium; Instrumentation; Lamps; Lanthanum; Luminescence; Materials Science; Optical and Electronic Materials; Optical properties; Original Research Article; Phosphors; Solid State Physics; Strontium; Eu; MSi; luminescence; Re; Phosphors; co-doping; N; O
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-024-11243-1

Re 3+ ions (Re = Y, La, Gd)-doped MSi 2 O 2 N 2 :Eu 2+ (M = Ca, Sr) phosphors were prepared by the solid-state reaction method. The effects of co-dopants (Y 3+ , La 3+ , Gd 3+ ) and Eu 2+ doping concentration on the luminescent performance of MSi 2 O 2 N 2 :Eu 2+ have been investigated. The co-doping with Re 3+ (Re = Y, La, Gd) significantly improved the luminescent performance of MSi 2 O 2 N 2 :Eu 2+ (M = Ca, Sr) overall. Re 3+ co-doping had a greater enhancing effect on higher Eu 2+ concentration samples and the Re 3+ -doped CaSi 2 O 2 N 2 :Eu 2+ phosphors exhibited better luminescence properties than Re 3+ -doped SrSi 2 O 2 N 2 :Eu 2+ ones. In addition, incorporation of Y 3+ ions to SrSi 2 O 2 N 2 :Eu 2+ showed the strongest emission among the three dopants (Y 3+ , La 3+ , and Gd 3+ ), while the Gd 3+ doping ions in CaSi 2 O 2 N 2 :Eu 2+ exhibited superior luminescence properties compared to Y 3+ and La 3+ .