论文部分内容阅读
采用溶胶-凝胶法制备了掺杂铕离子(Eu~(3+))的硼酸钇(YBO_3)-2二氧化硅(2SiO_2)的红色发光体,通过X射线粉末衍射仪(XRD)、红外光谱(FT-IR)、激发和发射光谱表征和研究了样品的结构和发光性能,确定制备该发光体所需的最佳退火温度为900℃;样品在612nm监测波长下,最佳激发波长为395nm,Eu~(3+)的最佳掺杂量为9%(摩尔百分数)。FT-IR、XRD测试表明,温度达到900℃时,晶体处于晶型转变,此时最有利于钇离子(Y~(3+))、Eu~(3+)的掺杂,样品发光最好。在1000℃时,样品大的三维网结构被破坏,不利于Eu~(3+)的掺杂和发光。
The red luminophore doped with europium ion (Eu 3+) -based yttrium (YBO 3) -2 silica (2SiO 2) was prepared by sol-gel method and characterized by X-ray powder diffraction (XRD), infrared The structure and luminescent properties of the samples were characterized and studied by FT-IR, excitation and emission spectroscopy. The optimal annealing temperature for the preparation of the luminescent material was determined to be 900 ℃. The optimal excitation wavelength of the sample at 612 nm was The optimum doping amount of Eu ~ (3+) is 9% (mol%). The results of FT-IR and XRD show that when the temperature is up to 900 ℃, the crystals are in the crystal transition, which is most favorable for the doping of Y 3+ and Eu 3+. . At 1000 ℃, the large three-dimensional network structure of the sample is destroyed, which is not conducive to Eu 3+ doping and luminescence.