| 摘要: |
| 采用X射线衍射（XRD）、扫描电子显微镜（SEM）、激发-发射光谱及反射光谱等手段，研究了以尿素为燃料的溶胶-凝胶燃烧法，制备白光LED用Y3Mg2AlSi2O12∶Ce3+荧光粉过程中的还原温度、Ce3+浓度等因素，对荧光粉结构、形貌和发光性能的影响.比较了溶胶-凝胶燃烧法和高温固相反应法制备的Y3Mg2AlSi2O12∶Ce3+荧光粉的结晶度、形貌和发光性能，并从反应过程对造成两者差异的原因进行了讨论. |
| 关键词: 白光LED用荧光粉 溶胶-凝胶燃烧法 固相反应法 结晶度 形貌 |
| DOI：10.3969/J.ISSN.1000-5137.2017.06.010 |
| 分类号:O482.31 |
| 基金项目: |
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| Study on preparation of orange-emitting phosphor Y3Mg2AlSi2O12: Ce3+ for wLED |
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Yan Shirun, Chen Xiaoqian, Deng Taoli, Hu Jianguo
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Department of Chemistry, Fudan University, Shanghai 200433, China
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| Abstract: |
| Ce3+-doped garnet-structured orange-emitting phosphor Y3Mg2AlSi2O12:Ce3+ was prepared by sol-gel combustion using urea as a fuel.Effects of the reduction temperature,Ce3+ doping concentration on the structure,morphology,and photoluminescence property of the as-prepared phosphor were investigated by X-ray diffraction(XRD),scaning electron microscope(SEM),photoluminescence spectroscopy and UV-Vis reflection spectroscopy.The crystallinities,morphologies,and photoluminescence properties of the phosphors prepared by sol-gel combustion and solid-state reaction were compared.The reasons causing different performance of the phosphors were discussed. |
| Key words: wLED phosphors sol-gel combustion solid-state reaction crystallinity morphology |
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