Eu^3＋掺杂YBO3-2SiO2发光材料的制备及发光性质

Preparation and luminescent property of YBO_3-2SiO_2∶Eu^(3+)

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。

Eu3＋doped YBO_3-2SiO_2 red luminescent materials were prepared by the Sol-Gel method.The crystal structure and the luminescent properties of samples were measured and characterized by FT-IR,XRD,excitation and emission spectra,respectively.The excitation and emission spectra showed that the best annealing temperature was 900℃ for preparing material.It also showed that the best excitation light was the ultraviolet light with the wavelength of 395 nm when the wavelength of the monitoring light was 612 nm,and the optimum doping amount of Eu3＋was 9%（mol）.The FT-IR spectra showeds that the change between Si—O—Si bonds and B—O bonds during the sample at 900℃,The crystal structure was benefit for Y3＋,Eu3＋doping,the sample luminescence was the best.In 1000℃,the three-dimensional network structure of sample was destroyed,YBO_3 crystal formed,which was consistent with XRD analysis results,these changes were not in favor of Eu3＋doping and luminescence.