Embodiment and luminescence properties of Sr_3SiO_5:Eu(yellow-orange phosphor) by co-doping lanthanide

摘要

We have synthesized a Eu~(2+)-activated lanthanide co-doped Sr_3SiO_5 : Eu yellow-orange phosphor. In this experiment, sample powder has been synthesized by conventional solid state method. It was calculated that luminescent efficiency of a Gd~(3+) co-doped Sr_3SiO_5:Eu phosphor sample is up to 105% than that of only Sr_3SiO_5:Eu phosphor. Those samples can be applied such as phosphor for white LED lamps through integrating on the UV or blue chips. On the contrary, the use of a Dy, Ce, Pr and lanthanide short of Gd by the co-doping materials was caused by decreasing luminescent intensity. The emission band was shifted from 572nm to short wavelengths by co-doping lanthanide. The emission band of a Nd~(3+)co-doped Sr_3SiO_5: Eu phosphor sample was not symmetrical at 570nm. As Nd~(3+) concentration increased, two emission bands were observed