SILICATE-CONTAINING LUMINESCENT MATERIAL,ITS MAKING METHOD AND THE LIGHT-EMITTING DEVICE USING THE SAME

摘要

A silicate-containing luminescent material which can be excited by the light source ranging from UV to green region, especially useful for white and multi-colour light-emitting device and its making method are disclosed. The luminescent material can emit the light from blue to red, and its common formula is aMO bM'O SiO₂ cR: xEu yLn z Lv dLm, wherein, M is one or more kinds of elements selected from Sr, Ca, Ba and Zn; M' is one or more kinds of elements selected from Mg, Cd and Be; R is one or two components selected from B₂O₃ and P₂O₅; Ln is one or more kinds of elements selected from Nd, Dy, Ho, Tm, La, Ce, Er, Pr, Bi, Sm, Sn, Y, Lu, Ga, Sb, Tb, Mn and Pb; Lv is one or more kinds of elements selected from Cl, F, Br, I, S; Lm is one or more kinds of elements selected from Li, Na and K.