NEW LUMINOPHORS, SUCH AS NEW LOW-BAND LUMINOPHORS OF RED LIGHT, FOR A SOLID SOLID LIGHT

摘要

1. A lighting device (100) comprising a light source (10) configured to generate radiation (11) of the light source and a luminescent material (20) configured to convert at least a portion of the radiation (11) of the light source to radiation (51) luminescent material in which the light source (10) includes a light emitting diode (LED), and in which the luminescent material (20) includes a phosphor (40) having a UCrC structure, or an ordered variant of the UCrC aristotype, or a NaLiSiO structure, or KLiGeO structure having formula:, where M selected from the group consisting of Ca, Sr and Ba; Ζ selected from the group consisting of monovalent Na, K and Rb; A selected from the group consisting of divalent Mg, Mn, Ζn and Cd; B selected from the group consisting of trivalent B, Al and Ga; C is selected from the group consisting of tetravalent Si, Ge, Ti and Hf; D is selected from the group consisting of monovalent Li and Cu; Ε is selected from the group consisting of Ρ, V, Nb and Ta; ES selected from the group consisting of divalent Eu, Sm and Yb; RE selected from the 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 l; 0≤n≤0.5; 0≤a≤4; 0≤b≤4; 0≤c≤4; 0≤d≤4; 0≤e≤4; a + b + c + d + e = 4; and 2a + 3b + 4c + d + 5e = 10-y-n + z. 2. The lighting device (100) according to claim 1, in which one or more of the following (i) z + d 0 and (ii) 2≤a≤3.3 are additionally applicable. The lighting device (100) according to any one of the preceding claims, wherein M is selected from the group consisting of Ca and Sr A = Mg; B is selected from the group consisting of Al and Ga; C = tetravalent Si; ES = divalent Eu; RE is selected from the group consisting of trivalent Ce, Pr, Sm, Gd, Tb and Dy, in which one or more of the following (i) 0 x≤0.2 are applicable, and in which y / x 0.1 and n≤0 , 1, and (ii) in which RE includes Ce, and in which x / y is 0.1 and n≤0.1.4. A lighting device (100) according to claim 1 or 2, wherein the luminescent material (20) further includes one or more other phosphors selected from the group consisting of divalent