摘要
以Ｍｇ（ＮＯ３）２、Ｃａ（ＮＯ３）２、Ｅｕ（ＮＯ３）３、Ｂｉ（ＮＯ３）３、ＬｉＮＯ３和Ｓｉ（ＯＣ２Ｈ５）４为反应物，采用溶胶－凝胶法，在比较低的温度下，首次合成０．７０１ｍｏＩＭｇＯ－０．１７５ｍｏｌＣａＯ－１．２５ｍｏＩＳｉＯ２∶０．０６ｍｏｌＥｕ（３＋），０．００２ｍｏＩＢｉ（３＋）（加入Ｌｉ＋作为电荷补偿剂）发光体。得到了最佳合成条件。研究了由溶胶向凝胶转变和凝胶向发光晶体的转变过程。探讨了发光体在不同激发波长激发下的发光特性以及在激活剂、敏化剂不同掺杂量下的发光行为。讨论了在（Ｍｇ（ａ）Ｏ－ＳｉＯ２基质中Ｂｉ（３＋）对Ｅｕ（３＋）的能量传递和敏化作用。
The Iuminophors which have composition of 0. 701MgO- 0. 175CaO1. 25SiO2∶0. 06Eu3+,0. 002Bi3+and doped Li-ion as charge compensator were synthesized for the firsttime from Mg(NO3)2, Ca(NO3)2, Eu(NO3)3, LiNO3 and Si(OC2H5)4 via the sol-gel methodat the temperature much lower than that by the traditional solid state reaction。 The optimumconditions of preparation are reported. Both the transition from soI to gel and the transitionprocess from geI to luminescent crystal were studied. The luminescence character of the lu-minophors excited by different wavelength light, as well as the luminescence behavior in dif-ferent concentrations of the activators and sensitizers were explored. The energy transferfrom Bi3+to Eu3+in the luminophors was also discussed。
出处
《应用化学》
CAS
CSCD
北大核心
1994年第1期67-71,共5页
Chinese Journal of Applied Chemistry
基金
中国科学院长春应用化学研究所稀土化学与物理开放实验室资助项目
关键词
掺杂
铕铋硅酸盐
溶胶-凝胶法
发光
bismuth,europium doped silicate,sol-gel method, preparation, luminophor,sensi-tization
