Improvement of the thermal stability of bluish-cyan emitting phosphor Y2MgAl4SiO12:Eu2+ using substitution cations (Zn, Ca, Sr) for white LEDs

A series of bluish-cyan color adjustable phosphors Y 2 MgAl 4 SiO 12 : x Eu 2+ (YMAS) and Y 2 (Mg 1− y ,M y )Al 4 SiO 12 :Eu 2+ (M = Zn, Ca, Sr) were synthesized by the solid-state method.