NEW NITRIDOALUMOSILICATE PHOSPHOR FOR SOLID STATE LIGHTING Russian patent published in 2019 - IPC F21S2/00 F21Y115/10 C09K11/08 C09K11/77 G02F1/13357 

FIELD: lighting.

SUBSTANCE: invention can be used in lighting devices and information display devices. Lighting element 100 comprises radiation source 10 and luminescent material 20, which converts at least part of radiation 11 from source 10 into radiation 51. Radiation source 10 comprises a light emitting diode. Luminescent material 20 contains a luminescent substance 40 having the formula M_l-x-y-zZ_zA_aB_bC_cD_dE_eN_6-nO_n:ES_x,RE_y (I), where is M are selected from a group consisting of Ca, Sr and Ba; Z are selected from a group consisting of Na, K and Rb; A are selected from a group consisting of Li and Cu; B are selected from a group consisting of Mg, Mn, Zn and Cd; C are selected from a group consisting of B, Al and Ga; D are selected from a group consisting of tetravalent Si, Ge, Ti and Hf; E are selected from a group consisting of pentavalent P, V, Nb and Ta; ES are selected from a group consisting of divalent Eu, Sm and Yb; RE are selected from a group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm; 0≤x≤0.2; 0≤y≤0.2; 0<x+y≤0.4; 0≤z<1; x+y+z<1; 0≤n≤0.75; 0≤a≤2; 0≤b≤2; 0≤c≤4; 0≤d≤4; e=0; a+b=2; c+d+e=4; a+2b+3c+4d+5e+y-z=16-n. Phosphor particles may have a coating from a group consisting of AlPO₄, Al₂O₃ and SiO₂. Luminescent material 20 may additionally include phosphors selected from Ba_0.95Sr_0.05Mg₂Ga₂N₄:Eu, BaMg₂Ga₂N₄:Eu, SrMg₃SiN₄:Eu, SrMg₂Al₂N₄:Eu, SrMg₂Ga₂N₄:Eu, BaMg₃SiN₄:Eu, CaLiAl₃N₄:Eu, SrLiAl₃N₄:Eu, CaLi_0.5MgAl_2.5N₄:Eu and SrLi_0.5MgAl_2.5N₄:Eu.

EFFECT: high efficiency of lighting devices.

16 cl, 9 dwg, 3 tbl, 8 ex