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A series of Eu2+ and Mn2+ singly or doubly doped Ca10Na(PO4)7 (CNPO) phosphors synthesized by high temperature solid-state reaction route are studied for light emitting diode applications. Under the excitation of ultraviolet (UV) light, the Eu2+-single activated CNPO phosphors exhibit two intense and broad emission bands centered at 406 and 450 nm, and the relative emission intensity of these two...
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