【摘要】 采用水热法合成SrMoO₄:Eu³⁺,SrMoO₄:Tb³⁺,Eu³⁺系列荧光粉。利用X射线衍射（XRD）、扫描电镜（SEM）、光电子能谱（EDS）、荧光光谱以及色坐标等研究了所制备荧光粉的结构、形貌和发光性能。XRD检测表明,试样的结构属四方晶系。EDS测试证明,合成样品含有相应组分元素,没有杂质元素。荧光光谱测试表明,在364、385、397、419、467和537nm波长紫外光和可见光的激发下,SrMoO₄:xEu³⁺的发光光谱由[MoO4]原子团的3 T1,3 T2-1 A1电荷迁移跃迁峰（536nm波长,绿光）,以及Eu³⁺的5 D0→7 F1（593nm波长,橙红光）,5 D0→7 F2（615nm,红光）,5 D0→7 F3（646nm,红光）跃迁发光峰组成。在243、253、288、320和396nm波长紫外可见光激发下,SrMoO₄:0.05Tb³⁺,0.05Eu³⁺的发射光谱包含了:Tb³⁺的5 D4→7 F6（489nm波长,蓝光）、5 D4→7 F5（546nm波长,绿光）、5 D4→7 F4（582nm波长,黄光）跃迁的发射峰,Eu³⁺的5 D0→7 F1（593nm波长,橙红光）,5 D0→7 F2（615nm波长,红光）,5 D0→7 F3（646nm波长,红光）的发射峰。改变激发波长,可以调节SrMoO₄:0.05Tb³⁺,0.05Eu³⁺的发光颜色,存在Tb³⁺→Eu³⁺的能量传递。更多还原

【Abstract】 The SrMoO₄:Eu³⁺,SrMoO₄:Tb³⁺,Eu³⁺ phosphors were synthesized by hydrothermal method.The crystal structure morphology and luminescent properties are studied by X-ray diffraction（XRD）,scan electron microscope（SEM）,photoelectron spectroscopy（PES）,photoluminescence（PL）spectroscopy and long-lasting phosphorescence.The results by XRD indicate SrMoO₄:0.05Eu³⁺,SrMoO₄:0.10Tb³⁺,0.05Eu³⁺ belong to a tetragonal crystal system.The PES results reveal that the as prepared SrMoO₄:0.10Tb³⁺,0.05Eu³⁺phosphors are mainly composed of corresponding elements of molecular formula and no other impurity is detected.The emission spectra of SrMoO₄:xEu³⁺excited by364 nm,385nm,397 nm,419nm,467 nm and 537 nm are composed of ³T₁,³T₂-¹A₁ charge transfer peak of[MoO₄]atomic group（536nm,green）and 5 D0→2 F2→7 F1（593nm,orange red）,⁵D₀→⁷F₂ （615nm,red）,and 5 D0→7 F3（646nm,red）emission peaks of Eu³⁺.The emission spectra of SrMoO₄:0.10Tb³⁺,0.05Eu³⁺excited by 243nm,253nm,288nm,320nm and 396nm are composed of ⁵D₄→⁷F₆（489nm,blue）,⁵D₄→⁷F₅（546nm,green）,⁵D₄→⁷F₄（582nm,yellow）of emission peaks Tb³⁺and ⁵D₀→⁷F₁（593nm,orange red）,⁵D₀→⁷F₂（615nm,red）,and ⁵D₀→⁷F₃（646nm,red）emission peaks of Eu³⁺.By adjusting excitation spectrum of SrMoO₄:0.10Tb³⁺,0.05Eu³⁺,tunable emission colors are realized in a large color gamut,in which energy transfer from Tb³⁺to Eu³⁺is observed and discussed in detail.更多还原