| 白光LED用红色荧光粉SrMoO4: Eu3+,Gd3+的制备与表征 |
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| 引用本文： | 关荣锋,李勤勤,孙倩.白光LED用红色荧光粉SrMoO4: Eu3+,Gd3+的制备与表征[J].人工晶体学报,2012,41(4):1019-1024. |
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| 作者姓名： | 关荣锋 李勤勤 孙倩 |
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| 作者单位： | 1. 河南理工大学材料科学与工程学院,焦作454000;盐城工学院江苏省新型环保重点实验室,盐城224051
2. 河南理工大学材料科学与工程学院,焦作,454000 |
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| 基金项目： | 河南基础与前沿技术研究计划项目(082300440150);河南省重点科技攻关项目(072102240027);江苏省新型环保重点实验室(AE201150) |
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| 摘 要： | 采用共沉淀法合成了红色荧光粉Sr1-x-yMoO4∶ Eu3+x,Gd3+y,分别对样品进行了X射线衍射(XRD)分析、扫面电镜(SEM)和荧光光谱(PL)的测定.结果表明:所合成的样品均为单一纯相四方晶系结构,添加Gd3+(为0.35mol时)使主衍射峰的位置右移了0.35°；SEM照片显示:SrMoO4∶ Eu3+和SrMoO4∶Eu3+,Gd3+颗粒尺寸分布相对均匀,为类方块状,颗粒大小约为1～3μm；Gd3+和Eu3+的共掺得到的SrMoO4∶ Eu3+,Gd3+在616 nm处主发射峰的发光强度约是SrMoO4∶Eu3+的2.09倍；当掺杂x=0.25 mol和y=0.35 mol时,在近紫外光(395 nm)激发下,SrMoO4Eu3+,Gd3+得到616 nm处红光发射极峰.
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| 关 键 词： | 白光LED SrMoO4∶ Eu3+ Gd3+ 红色荧光粉 共沉淀法 |
Synthesis and Characterization of SrMoO4:Eu3+,Gd3+ Red Phosphor for White LED |
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| GUAN Rong-feng
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LI Qin-qin
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SUN Qian.Synthesis and Characterization of SrMoO4:Eu3+,Gd3+ Red Phosphor for White LED[J].Journal of Synthetic Crystals,2012,41(4):1019-1024. |
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| Authors: | GUAN Rong-feng LI Qin-qin SUN Qian |
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| Institution: | 1.School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China; 2.Jiangsu Province Environmental Protection Key Laboratory,Yancheng Institute of Technology,Yancheng 224051,China) |
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| Abstract: | A novel red emitting phosphor Sr1-x-yMoO4∶ Eu3+x,Gd3+y was successfully synthesized by co-precipitation method.The crystal structure,morphology and luminescent properties of samples were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),and photoluminescence spectrophotometer(PL).The results indicated that all the phosphor are isostructural and share a tetragonal scheelite structure of space group I41/a88;After adding Gd3+(y=0.35 mol),it is found the main diffraction peak position shifted to the right of 0.35°.The results of SEM show that the particles size of SrMoO4∶ Eu3+ and SrMoO4∶ Eu3+,Gd3+ is relatively uniform,displays the blocks structure of regular shape,which size is about 1-3 μm;Under 395 nm,it is found that the luminescent intensity of SrMoO4∶ Eu3+,Gd3+ is about 2.09 times higher than that of SrMoO4∶ Eu3+ phosphor;the main emission spectrum peak at 616 nm achieves the maximum in Eu3+ and Gd3+ co-doped SrMoO4 phosphor when x=0.25 mol and y=0.35 mol. |
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| Keywords: | white LED SrMoO4∶ Eu3 + Gd3 + red phosphor co-precipitation method |
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