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提高空气中制备Ba2MgSi2O7…Eu2+的发光性能

Enhanced Luminescence Properties of Ba2MgSi2O7…Eu2+Prepared in Air Atmosphere

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【作者】 游潘丽; 刘丽娟; 姚亚东; 黄忠兵; 廖晓明; 尹光福;

【Author】 You Panli1,2 Liu Lijuan1 Yao Yadong1 Huang Zhongbing1Liao Xiaoming1 Yin Guangfu11College of Materials Science and Engineering,Sichuan University,Chengdu,Sichuan 610065,China2School of Engineering and Technology,Xichang College,Xichang,Sichuan 615013,China

【机构】 四川大学材料科学与工程学院; 西昌学院工程技术分院;

【摘要】 通过高温固相反应在空气中制备了一系列Eu掺杂的Ba2MgSi2O7发光材料。利用发射光谱和激发光谱,证实在Ba2MgSi2O7中,Eu3+在空气中被还原成Eu2+。研究表明:在1350℃急冷条件下制备Ba2MgSi2O7…Eu2+荧光粉比在1250℃炉冷条件下制备的发光强度提高了近6倍。而且,添加NH4F助溶剂能提高空气中制备Ba2MgSi2O7…Eu2+荧光粉的发光性能。当NH4F用量为4%时(摩尔分数),Ba2MgSi2O7…Eu2+荧光粉的发光强度是不含助溶剂的5倍。

【Abstract】 A series of Eu-doped Ba2MgSi2O7 phosphors are prepared in air atmosphere by the high temperature solid-state reactions.A reduction of Eu3+ to Eu2+ ion is validated in Ba2MgSi2O7 via emission and excitation spectra measurement.The results show that the photoluminescence(PL) intensity of the Ba2MgSi2O7\:Eu2+ prepared in air at 1350 ℃ with quench cooling was enhanced about 6 times compared with that of Ba2MgSi2O7\:Eu2+ prepared in air at 1250 ℃ with furnace cooling.Moreover,the PL intensity of the Ba2MgSi2O7\:Eu2+ is increased by adding NH4F flux.The PL intensity of Ba2MgSi2O7\:Eu2+ phosphor containing 4% NH4F(molar fraction) is 5 times as high as that of the Ba2MgSi2O7\:Eu2+ phosphor without NH4F.

【关键词】 材料; 发光; Ba2MgSi2O7…Eu2+; NH4F助溶剂; 硅酸盐;
【Key words】 materials; luminescence; Ba2MgSi2O7\:Eu2+; NH4F flux; silicate;
【基金】 国家自然科学基金(60871062、50873066);四川省科技攻关重点项目(2008SZ0021、2006Z08-001-1);教育部高等教育博士培养计划项目(20070610131)资助课题
  • 【文献出处】 激光与光电子学进展 ,Laser & Optoelectronics Progress , 编辑部邮箱 ,2010年12期
  • 【分类号】O482.31
  • 【被引频次】11
  • 【下载频次】190
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