Near-ultraviolet light excited deep blue-emitting phosphor for solid-state lighting

BaMgAl10O17:Eu2+ (BAM) is one kind of commercial blue phosphor in fluorescent lamps, because of its efficient blue emission. A serial of phosphors BaMgAl10O17:0.1 Eu2+ doped different H3BO3 concentration were prepared by solid-state reaction technique, and their photoluminescent properties were investigated. The introduction of H3BO3 broadens the excitation band of the phosphor BAM around 400 nm and enhances the emission intensity under 400 nm light excitation. The emission of the phosphor BAM doped with 6% H3BO3 has optimum blue emission, with good CIE (Commission Internationale de I'Eclairage, International Commission on Illumination) chromaticity coordinates x = 0.151, y = 0.058. Hence, the phosphor can be applied in fabrication of near-UV LED excited white light-emitting diode (LED). (C) 2009 Elsevier B.V. All rights reserved.