Abstract
We developed a new silicate-based full-color phosphor Ba 3Lu 2(SiO 4) 3:Eu 2+ through solid state reaction. The host crystal structure was isostructural with Ca 3Y 2(SiO 4) 3 instead of garnet-type. The phosphor absorbed near-ultraviolet light from 250 to 400 nm, which was very suitable for a color converter of white LED that used UV-LED as the primary light source. The photoluminescence peak wavelength of Ba 3Lu 2(SiO 4) 3:Eu 2+ was about 461 nm and a shoulder peak was around 522 nm, which resulted from the 5d-4f transition of the Eu 2+. The optimum concentration of Eu 2+ was 3.45 mol.% of Ba 2+ content in Ba 3Lu 2(SiO 4) 3 host. It is a promising candidate for application in white LED as a white light converter.
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