稀土离子掺杂的YAG:Ce^(3+)荧光粉发光性能的研究  

Studies on Luminescent Property of Rare-earth Ion-doped YAG:Ce^(3+) Phosphors

作　　者：杨英[1] 吴茜[1] 耿秀娟[1] 陈永杰[1] 

机构地区：[1]沈阳化工学院应用化学学院,辽宁沈阳110142

出　　处：《沈阳化工学院学报》2009年第4期294-296,333,共4页Journal of Shenyang Institute of Chemical Technolgy

基　　金：辽宁省教育厅基金项目(05L329);沈阳市科技计划项目(10633070)

摘　　要：为增加LED用荧光粉红色发光成分,用高温固相法在还原气氛下制备掺Gd、Tb、La的YAG:Ce3+荧光粉,用F-4600荧光分光光度计测定激发光谱和发射光谱.研究Gd、Tb、La的不同掺入量对YAG:Ce3+荧光粉发光性能的影响.结果表明:该荧光粉激发光谱峰值在475 nm附近,发射光谱峰值在540~560 nm之间.掺杂Gd和Tb使得YAG:Ce3+荧光粉发射光谱有不同程度的红移,掺Gd的YAG:Ce3+荧光粉的发射光谱红移较Tb更明显;掺杂La的YAG:Ce3+荧光粉光谱图峰位发生了蓝移.The phosphor YAG：Ce^3＋ doped with gadolinium, terbium or Lanthanun ions was obtained by high temperature solid-state reaction process in order to increase red luminous component of the phosphors used in LED. Excitation spectra and emission spectra were determined by F-4600 fluorescence spectrophotometer. The effect of molar ratios of Gd^3＋ , Tb^3＋ and La^3＋ on luminescent property of the phosphors YAG：Ce^3＋ was investigated in details. It was indicated that the excitating peak was at 475 nm and the emitting peak was at 540 - 560 nm. The emission spectra of YAG ： Ce^3＋ doped with gadolinium or terbium ions moved toward longer wavelength and that of YAG：Ce^3＋ doped with Lanthanun ions moved toward shorter wavelength.

关 键 词：稀土 YAG:Ce3+ 荧光粉 发光性能 

分 类 号：TQ422[化学工程]