NOVEL SILICATE-BASED YELLOW-GREEN PHOSPHORS

WIPO Patent Application WO2006022792

A3

Novel phosphor systems are disclosed having the formula A₂SiO₄:Eu²⁺D, where A is at least one of a divalent metal selected from the group consisting of Sr, Ca, Ba, Mg, Zn, and Cd; and D is a dopant selected from the group consisting of F, Cl, Br, I, P, S and N. In one embodiment, the novel phosphor has the formula (Sr_1-x-yBa_xM_y)₂ SiO₄: Eu²⁺F (where M is one of Ca, Mg, Zn, or Cd in an amount ranging from 0