LiSrBO3:Eu2+: A novel broad-band red phosphor under the excitation of a blue light

A Eu2+ doped LiSrBO3 phosphor has been synthesized by a double-sintering process under a reducing atmosphere on the purpose of searching broad-band red phosphors. LiSrBO3: Eu2+ shows a broad emission band with a maximum at 618 nm under excitation of 460 nm-light, which is due to a large covalency and a high crystal field splitting. Although a phosphor-converted LED was fabricated with the synthesized LiSrBO3: Eu2+ and a 460 nm-emitting InGaN chip, this phosphor cannot be applied in LED until the quantum efficiency is improved. (C) 2012 Elsevier B.V. All rights reserved.