New Silicate Phosphors for a White LED

Abstract

We focus on the development of new silicate phosphors for a white LED. In the europium doped silicate system, four LED phosphor candidates-Li 2 SrSiO 4 :Eu 2+ , Ba 9 Sc 2 Si 6 O 24 :Eu 2+ , Ca 3 Si 2 O 7 :Eu 2+ and Ba 2 MgSi 2 O 7 :Eu 2+ were found. Luminescent properties under near UV and visible excitation were investigated for the new Eu 2+ doped LED silicate phosphors. These new phosphors have a relatively strong absorption band in a long wavelength region.