Patent ID: 10106735

Abstract:
The present disclosure provides a red phosphor represented by formula (1): (x-a-b)MgO.aM1O.bM2O1.5.yMgF2.fM6X2.(1-g)GeO2.gM7O1.5:zMn4+  (1) where x, y, z, a, b, f, and g satisfy 1.144<x≤11.0, 0<y<1.597, 0<z<0.1, 0<a<1.0, 0≤b≤1.0, 0<f≤2.0, 0≤g<0.484, 1.144<(x-a-b), and b and g satisfy b+g≠0; M1 is at least one element selected from the group consisting of Ca, Sr, Ba, and Zn; M2 is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; M6 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; M7 is at least one element selected from the group consisting of B, Al, Ga, and In; and X is at least one element selected from the group consisting of F, Cl, Br, and I, and M6X2 is other than MgF2.