“…Nowadays, w-LEDs based on down-conversion phosphors (Y,Gd) 3 (Al,Ga) 5 O 12 :Ce 3+ plus a InGaN blue chip have become the common solid-lighting devices owning to its characteristics of high efficiency, long lifetime, rare pollution, etc. [1][2][3][4] However, the poor color rendering resulted from the deficiency of the red component has already restricted and hindered its further application in some certain fields. [5][6][7] Although co-doping rare earth ions (Pr 3+ , Eu 3+ , Sm 3+ , etc) or transition metal ions (Mn 2+ ) could inject more red component, the augment is quite limited and the thermal stability is significantly decreased.…”