| 摘要 |
Red-emitting phosphors may comprise a nitride-based composition represented by the chemical formula MaSrbSicAldNeEuf, wherein: M is at least one of Mg, Ca, Sr, Ba, Y, Li, Na, K and Zn, and 0<a<1.0; 1.5<b<2.5; 4.0@c@5.0; 0@d@1.0; 7.5<e<8.5; and 0<f<0.1; wherein a+b+f>2+d/v and v is the valence of M. Furthermore, nitride-based red-emitting phosphor compositions may be represented by the chemical formula MxM'2Si5-yAlyN8:A, wherein: M is Mg, Ca, Sr, Ba, Y, Li, Na, K and Zn, and x>0; M' is at least one of Mg, Ca, Sr, Ba, and Zn; 0@y@0.15; and A is at least one of Eu, Ce, Tb, Pr, and Mn; wherein x>y/v and v is the valence of M, and wherein the red-emitting phosphors have the general crystalline structure of M'2Si5N8:A. |
