“…Indeed, there are some reports on white light emission by a multiemission of the Eu 2+ activator, for example, Ba 3 P 5 N 10 Br:Eu 2+10 and Sr 5 (PO 4 ) 3−x (BO 3 ) x Cl:Eu 2+ (x = 0.5). 11 Ce 3+ is another representative activator with 4f−5d transition; thus, Ce-activated phosphors giving multiemission, such as Ca 3 (SiO 3 ) 3 :Ce 3+ , 12 Ba 2 CaB 2 Si 4 O 14 :Ce 3+ , 13 Ba 2 Ca 2 B 4 O 10 :Ce 3+ , 7 and Sr 2 Si 5 N 8 :Ce 3+ , 14,15 are also reported. However, white light emission has not been achieved by Ce 3+activated phosphors so far.…”