ALUMOSILICATE-BASED PHOSPHORS

摘要

The invention relates to co-activated silicate based phosphors and a process for preparing these phosphors and the use of these phosphors in electronic and electrooptical devices, especially light emitting diodes (LEDs) and solar cells. The invention further relates to illumination units comprising said phosphors.

主权项

1. Compound of formula (I)
(M1-x-y-z-w-eAxByC2zD2w)Si1-z-w-eAl2eO3  (I) where M is at least one cation selected from the group consisting of Ca, Sr and Ba; A and B are different from each other and are selected from Pb2+, Mn2+, Yb2+, Sm2+, Eu2+, Dy2+ or Ho2+; C and D are identically or differently at each occurrence, a trivalent cation and are selected form the groups consisting of Sc3+, Y3+, La3+, Ce3+, Pr3+, Nd3+, Pm3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+, and Bi3+; 0≦x≦0.3, 0≦y≦0.3, 0≦z≦0.3 and 0≦w≦0.3; 0.0001≦e≦0.2; wherein at least two of the indices x, y, z and w are >0.