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Eu 2+ doped BaAl 2 Si 2 O 8 phosphor was synthesized by one-step calcination of precursors that were prepared by chemical co-precipitation. The thermal degradation properties of BaAl 2 Si 2 O 8 :Eu 2+ were investigated by photoluminescence, lifetime and chromaticity coordinate measurements. BaAl 2 Si 2 O 8 :Eu 2+ is efficiently excited by incident light of 250-400 nm, which matches the emission of near ultraviolet LED chips well. BaAl 2 Si 2 O 8 :Eu 2+ exhibits broad blue emission at 470 nmdoi:10.1007/s11434-012-5025-2 fatcat:m6ye6borezdcpps4c5kmjhrgvq