PHOSPHOR, METHOD FOR PRODUCING PHOSPHOR, PHOSPHOR-CONTAINING COMPOSITION, LIGHT-EMITTING DEVICE, LIGHTING SYSTEM AND IMAGE DISPLAY DEVICE

摘要

To provide a yellow to orange phosphor which has high luminance and excellent temperature characteristics and which also has high luminance when mixed with a phosphor of a different color. A phosphor containing a crystal phase represented by the following formula [I], wherein when its object color is expressed by the L*a*b* color system, the values of a*, b* and (a*2+b*2)1/2 satisfy -20@a*@-2, 71@b* and 71@(a*2+b*2)1/2, respectively: R3-x-y-z+w2MzA1.5x+y-w2Si6-w1-w2Alw1+w2Oy+w1N11-y-w1[I]