| 硅酸盐橙色荧光粉的发光性能研究 |
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| 引用本文： | 徐文飞,王海波,范供齐,施丰华.硅酸盐橙色荧光粉的发光性能研究[J].电子元件与材料,2012,31(6):33-36. |
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| 作者姓名： | 徐文飞 王海波 范供齐 施丰华 |
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| 作者单位： | 1. 南京工业大学 材料科学与工程学院,江苏南京,210009
2. 南京工业大学 电光源材料研究所,江苏南京,210015 |
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| 基金项目： | 江苏省自然科学基金资助项目，江苏省企业院士工作站资助项目，国家"863"计划资助项目 |
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| 摘 要： | 采用高温固相反应法制备了高效橙色荧光粉Sr3–xSiO5:xEu2+。通过X射线粉末衍射仪(XRD)、扫描电镜(SEM)及荧光分光光度计研究了Eu2+含量和不同助熔剂对荧光粉发光性能的影响,并分析了所制荧光粉的封装性能。研究表明,荧光粉Sr3–xSiO5:xEu2+的晶体结构属正方晶系。当Eu2+的摩尔分数为4%,并用质量分数为3%的NH4Cl作助熔剂时,制得的Sr3–xSiO5:xEu2+的发射光谱强度最大。荧光粉封装后可以有效降低白光LED的色温并提高其显色指数,这表明该荧光粉是一种适用于白光LED的光转化材料。
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| 关 键 词： | 硅酸盐 白光LED 橙色荧光粉 助熔剂 |
Study on luminescent properties of silicate orange phosphor |
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| XU Wenfei
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WANG Haibo
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FAN Gongqi
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SHI Fenghua.Study on luminescent properties of silicate orange phosphor[J].Electronic Components & Materials,2012,31(6):33-36. |
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| Authors: | XU Wenfei WANG Haibo FAN Gongqi SHI Fenghua |
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| Affiliation: | 1(1.College of Material Science and Engineering,Nanjing University of Technology,Nanjing 210009,China;2.Research Institute of Electric Light Source Materials,Nanjing University of Technology,Nanjing 210015,China) |
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| Abstract: | High efficiency orange phosphor Sr3-xSiO5 : xEu2+ was synthesized by high temperature solid state reaction method.The effects of Eu2+ content and different fluxes on luminescent properties of phosphors were investigated by X-ray powder diffraction(XRD),scanning electron microscopy(SEM) and fluorescence spectrophotometer,while the package performance of the prepared phosphor was also analyzed.The results show that crystal structure of phosphor Sr3-xSiO5:xEu2+ is tetragonal system.When the mole fraction of Eu2+ is 4%,the luminous intensity of phosphor prepared with NH4Cl as flux(mass fraction of 3%) is the strongest.The color temperature of white LED decreases and color rendering index of white LED increases with the package of phosphor,which indicates that this phosphor is an appropriate light-conversion phosphor candidate for white-LED. |
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| Keywords: | silicate white-LED orange phosphor flux |
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