phosphors for LED applications

A color-tunable NaCaY(PO4)2:Eu 2+ , Mn 2+ was synthesized by a solid state reaction. NaCaY(PO4)2 crystallizes in the hexagonal structure system with space group of P6222 and Z = 1. The NaCaY(PO4)2:Eu 2+ exhibits blue-greenish emission and broad excitation bands corresponding to the allowed f→d electronic transition of Eu 2+ . In addition, via the design