Effect of sintering temperature on phase transformation and luminescence property of BaAl2Si208∶Eu2+ phosphor
(0) 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.
Sintering temperature BaAl2Si2O8∶Eu2+ phase structure luminescence properties
Ma Mingxing Liang Cun Zhu Dachuan Zhang Deliang Tu Mingjing
College of Material Science and Engineering, Sichuan University, Chengdu 610065, China; School of Ma School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China College of Material Science and Engineering, Sichuan University, Chengdu 610065, China School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
国际会议
上海
英文
148-148
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）