High luminance, and the addition and the temperature characteristic is excellent, when mixed with the phosphor tasaek provides a yellow to orange phosphor having high brightness.
A phosphor containing a crystal phase represented by the following formula [I], and also the value of the object color L ^* a ^* b ^* in the case of displaying a color space a ^*, b ^*, and ^{(a * 2 + b * 2} ) 1/2 each, -20 a ^* 2, 71 and b ^* 71 ^{(a * 2 + b * 2} ) fluorescent material that satisfy the ^1/2.
_{R 3-xy-z + w2} M z A 1.5x + y-w2 Si 6-w1-w2 Al w1 + w2 O y + w1 N 11-y-w1 [I]