Composite oxynitride phosphor, light-emitting device using the same, image display device, illumination device, phosphor-containing composition, and composite oxynitride

摘要

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒMl x Ba y M2 z L u O v N w €ƒ€ƒ€ƒ€ƒ€ƒ[I] In the formula [I], M1 represents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, M2 represents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges: 0.00001 ‰ x ‰ 3 0 ‰ y ‰ 2.99999 2.6 ‰ x + y + z ‰ 3 0 u ‰ 11 6 v ‰ 25 0 w ‰ 17.