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Synthesis and Photoluminescence of BaMgAl10O17∶Eu2+ Phosphor by Oxalate Co-precipitation Process

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【作者】 张占辉； 王育华； 都云昆； 李峰；

【Author】 Zhang Zhanhui , Wang Yuhua ~(*), Du Yunkun , Li Feng (Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China)

【机构】 Department of Materials Science； School of Physical Science and Technology； Lanzhou University； Lanzhou 730000； China； China；

【Abstract】 Single phase of Ba1-xMgAl10O17∶xEu2+ （0.02≤x≤0.14） phosphors was first successfully prepared by co-precipitation in aqueous medium with a “reverse strike” method, using oxalic acid and ammonia together as precipitants. Completely crystallized phosphors were obtained at 1300 ℃, which is 300 ℃ lower than the temperature of solid-state reaction. Their photoluminescence was investigated under UV and VUV region, respectively. The emission spectra of Ba1-xMgAl10O17∶xEu2+ samples excited by 254 or 147 nm showed a characteristic wide band with the peak centred at about 450～454 nm. Optimum emission intensity reached at x=0.1 and then concentration quenching occurred. The synthesized phosphor shows 10% higher emission intensity than that prepared by solid-state reaction.

【关键词】 BaMgAl10O17∶Eu2+； phosphor； oxalate co-precipitation process； reverse strike；
【Key words】 BaMgAl10O17∶Eu2+； phosphor； oxalate co-precipitation process； reverse strike；
【基金】 Project supported bythe National Natural Science Foundation of China (50272026) ,the Excellent Young Teachers ProgramofMOE,China (EYTP) and the Natural Science Foundation of Gansu Province (ZS031-A25-033-C)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2005年04期
  • 【分类号】O482.31
  • 【被引频次】7
  • 【下载频次】60
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