A novel yellow luminescent material Ba3Y(PO4)3:Eu2+

Abstract A series of yellow emitting phosphors Eu 2+ -doped Ba 3 Y(PO 4 ) 3 were synthesized by conventional solid-state reaction. The photoluminescence (PL) properties and concentration quenching of the as-prepared phosphors were investigated. The photoluminescence study shows that Ba 3(1− x ) Y(PO 4 ) 3 : x Eu 2+ phosphors can be efficiently excited by near-ultraviolet (near-UV) light to realize a novel yellow luminescence corresponding to the electric-dipole allowed 4f–5d transition of the Eu 2+ ions. The concentration self-quenching mechanism of Ba 3 Y(PO 4 ) 3 :Eu 2+ is the dipole–dipole interaction and the critical transfer distance is calculated to be about 23.92 A. Compared with the yellow phosphor YAG:Ce, Ba 2 . 97 Y(PO 4 ) 3 :0.01Eu 2+ has higher emission intensity and better color purity. The experimental results indicate that Eu 2+ -doped Ba 3 Y(PO 4 ) 3 is a candidate for the yellow component in near-UV white light-emitting diodes fabrication.