王宁会

个人信息Personal Information

研究员

博士生导师

硕士生导师

性别:男

毕业院校:东北师范大学

学位:学士

所在单位:电子信息与电气工程学部

电子邮箱:nhwang@dlut.edu.cn

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Synthesis and Characterization of Sr3MgSi2O8:Eu2+,Dy3+ Phosphor Prepared by a Chemical Solution Method

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论文类型:会议论文

发表时间:2010-06-26

收录刊物:EI、CPCI-S、Scopus

卷号:675-677

页面范围:1089-+

关键字:Phosphor; Precipitation; Crystallization; Optical properties; Afterglow

摘要:A novel synthesis route for the production of Sr3MgSi2O8:Eu2+,Dy3+ sub-micron quasi-sphere phosphor powder is reported. Both the host and activator cations were co-precipitated in water-ethanol mixed solutions and precipitation was performed with analytical grade ammonium citratetribasic. As the dispersion media, optimum concentration for PEG in the precursor solution is determined to be 0.08 g/mL. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and fluorescence spectrophotometer were employed to characterize the phosphor. The effect of the calcining temperature on the crystalline particle and luminescence properties of Sr3MgSi2O8:Eu2+,Dy3+ is systematically discussed. Sr3MgSi2O8:Eu2+,Dy3+ single phased quasi-sphere phosphor was achieved by calcining the asprecipitated precursor at 1100 degrees C. Sr2SiO4 was identified as the intermediate phase during the calcination process. Despite the small particle size, the emission intensities were higher by the present method. However, the afterglow characteristic was not better than that prepared by solid-state reaction in the comparable condition.