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Sintered at different sintering temperatures, Eu2+ doped BaAl2Si2O8 phosphors were synthesized through one-step calcination process of precursors prepared by chemical co-precipitation method.TG-DTA was used to investigate the final temperature of thermal decomposition and the optimal sintering temperature of the sample synthesis.XRD patterns confirmed that the sample calcined at 1200℃ possessed a single hexagonal phase of BaAl2Si2O8.The emission spectrum of the sample calcined at 1000℃ was separated into three Gaussians with the maximum at about 455, 501 and 540 nm, due to the 4f7→4f65d transitions of Eu2+ ions occupying the Ba site of BaAl2Si2O8 and the Ba(1) and Ba(2) site of BaAl2O4, respectively.With the increase of sintering temperature, BaAl2Si2O8∶Eu2+ phosphor exhibited a greenish-blue broad band peaking at 455nm under near-ultraviolet excitation at ~400nm, and its emission intensity increased considerably due to the improved crystalline and homogeneous distribution of Eu2+ ions.