White light emission from Eu~(3+) singly activated Ca_8(Al_(12)O_(24))(MoO_4)_2 with host-sensitized properties for solid state light source application

摘要

AbstractWe report a Eu3+ions singly doped Ca8(Al12O24)(MoO4)2(CAM:Eu3+) single-phased white light emitting phosphors prepared by conventional solid-state reaction. Upon excitation of 280 nm light, the CAM:Eu3+presented a broad emission band ranging from ~ 350 to 600 nm and sharp lines in red region, which originating from the M–O group and5D0→7FJ(J = 0, 1, 2, 3, 4) transitions of Eu3+ions, respectively. Energy transfer from the Mo–O group to Eu3+ions occurred in this unique host was discussed. Through an effective synergistic contribution of$$left[ {{text{MoO}}_{4}^{{2 - }}} right]$$MoO42-and Eu3+ions, white light emission was finally achieved.