摘要
采用水热法制备出NaY(MoO4)2:Eu3+,Tb3+下转换发光材料。通过X射线粉末衍射、红外光谱、荧光激发和发射光谱对其进行表征。讨论了不同反应温度及Eu3+掺杂浓度对NaY(MoO4)2:Eu3+,Tb3+的晶体结构和发光性能的影响,得到水热温度为180℃及Eu3+浓度为摩尔分数0.7%时,样品具有最佳的发光效果。在395nm光激发下,观察到了591nm处橙光发射峰以及616nm处强红光发射峰,分别对应于Eu3+的5D0→7F1和5D0→7F2跃迁。并研究了NaY(MoO4)2:Eu3+,Tb3+材料中Tb3+对Eu3+的敏化作用及能量传递过程。
Trivalent europium and trivalent terbium ions codoped NaY（MoO4）2 down-conversation luminescence materials were synthesized by hydrothermal method. The properties of NaY（MoO4）2：Eu^3＋, Tb^3＋ were characterized by X-ray diffraction, infrared spectrometer, excitation spectra and emission spectra. The effects of reaction temperature and the concentration of europium doping on the crystal structure and luminescence properties were discussed. The optimum synthesis conditions for NaY（MoO4）2 are as follows： the reaction temperature is 180℃, and the mole fraction of Eu^3＋ is 0.7%. Under 395 nm excitation, the orange emission peak at 591 nm and red emission peak at 616 nm of NaY（MoO4）2： Eu^3＋, Tb^3＋ can be observed. The emitting light results from the transition ^5D0→^7F1 and ^5D0→^7F2 of Eu^3＋, respectively. The sensitized effect of Tb^3＋ to Eu^3＋ and corresponding energy transfer were studied.
出处
《电子元件与材料》
CAS
CSCD
2015年第3期8-11,共4页
Electronic Components And Materials
基金
辽宁省教育厅资助项目(No.L2013166)
