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白光LED用橙色发射荧光粉Y3Mg2AlSi2O12:Ce3+的制备研究
闫世润,陈晓倩,邓陶丽,胡建国
作者单位
闫世润 复旦大学 化学系, 上海 200433 
陈晓倩 复旦大学 化学系, 上海 200433 
邓陶丽 复旦大学 化学系, 上海 200433 
胡建国 复旦大学 化学系, 上海 200433 
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:
Study on preparation of orange-emitting phosphor Y3Mg2AlSi2O12: Ce3+ for wLED
Yan Shirun,Chen Xiaoqian,Deng Taoli,Hu Jianguo
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