Patent ID: 8574459
Filing Date: 2013-11-05
Classification: C04B,C09K,H01L,H05B

Abstract:
1. 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: wherein R is at least one rare earth element selected from the group consisting of La, Gd, Lu, Y and Sc; M is at least one metal element selected from the group consisting of Ce, Eu, Mn, Yb, Pr and Tb; A is at least one bivalent metal element selected from the group consisting of Ba, Sr, Ca, Mg and Zn; and x, y, z, w1 and w2 represent numerical values within the following ranges, respectively: