| abstract |
Disclosed is a complex oxynitride phosphor represented by the formula below, which is obtained by firing a phosphor precursor in the presence of a flux and improved in quantum efficiency and/or durability. M1xBayM2zLuOvNw (In the formula, M1 represents at least one activator element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb; M2 represents at least one divalent metal element selected from the group consisting of Sr, Ca, Mg and Zn; L represents a metal element selected from group 4 or group 14 metal elements of the periodic table; and 0.00001 ≤ x ≤ 3, 0 ≤ y ≤ 2.99999, 2.6 ≤ x + y + z ≤ 3, 0 < u ≤ 11, 6 < v ≤ 25, and 0 < w ≤ 17.) |