title: Blue-white-green tunable luminescence from Ba2Gd2Si4O13:Ce3+,Tb3+ phosphors excited by ultraviolet light.
abstract: The novel Ba2Gd2Si4O13:Ce3+,Tb3+ phosphors were systemically investigated by fluorescent method for the first time. Through an efficient energy transfer process, the obtained phosphors exhibit both a blue emission of Ce3+ and a yellowish green emission of Tb3+ with considerable intensity under near-ultraviolet excitation (300-370 nm). Tuning of the content of Tb3+ can generate the varied hues from blue to white and eventually to yellowish green. The quantum efficiency of the white phosphor Ba2(Gd0.88Ce0.02Tb0.1)2Si4O13 is 82.3% of commercial ZnS:Ag+,Cl- phosphor. Our results demonstrate that the potential application of these phosphors in solid-state lighting and (or) other areas.
authors.affiliation: Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, China. ghh@zjnu.cn
authors.forename: Hai
authors.initials: H
authors.lastname: Guo
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Jingjing
authors.initials: J
authors.lastname: Li
authors.forename: Fang
authors.initials: F
authors.lastname: Li
mesh_terms: D003116:Color; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D008163:Luminescent Measurements / Q000295:instrumentation*; D014466:Ultraviolet Rays