Luminescence properties and mechanism of Zn1.92-xBaxSi1-yTiyO4:0.08Mn2+ phosphors in VUV region

The present commercial phosphor Zn2SiO4:Mn2+ requires further improvement because of its long decay time. In this work, the co-doping effects of Ba2+ and Ti4+ upon emission intensity and decay time were investigated. Ba2+ and Ti4+ cations have favorable influences on the photoluminescent properties. When doped with appropriate amount of Ba2+, the intensity of green emission was increased 12% and the decay time was shortened 18%. When doped with appropriate amount of Ti4+, the luminescence intensity was enhanced a little, and the decay time was shortened 14%. Ba2+ and Ti4+ were co-doped in Zn2SiO4:Mn2+ system, the luminescence intensity was enhanced 18%, and the decay time was shortened sharply (about 31%). - Highlights: → Zn2SiO4:Mn2+ is used as VUV phosphor. → It requires further improvement because of its long decay time. → Ba2+ has positive influence on luminescent intensity and decay time. → Ti4+ has positive influence on luminescent intensity.