摘要
以硼砂和氯化钙为原料,主要采用化学共沉淀法成功合成了稀土离子Eu3+、Tb3+掺杂的硼酸钙发光材料。通过X射线衍射、荧光光谱对样品物相和发光性能进行了表征。探究了不同的实验条件(即不同煅烧温度、稀土离子浓度)对其发光性能的影响,样品的激发光谱表明,在800℃时,CaB2O4∶Tb3+的发光能力最强;掺杂稀土Tb3+离子的发光材料在5%时发光性能最强。在221nm紫外光激发下,样品在612nm和543nm处有Eu3+和Tb3+离子明显的特征发射峰,而且掺杂Eu3+离子的发光材料的发光性能随着Eu3+浓度的增加而增强。
The rare earth doped CAB2O4 ： Tb3＋ and CAB2O4 ： Eu3＋ phosphors have been synthesized by chemical co-precipitation preparation method using borax and calcium chloride as raw materials. The samples were characterized by X-ray diffraction（XRD）and fluorescence spectrometer（PL）. The influence of combustion temperature and dosage of rare earth ions Eu3＋ on luminescence property of phosphor were discussed. The results showed that the luminescence capacity of CaB2 O4 ： Tb3＋ was the strongest when the temperature was 800℃ and the most suitable concentration was five percent. The emission spectrum excited by 221nm exhibiled luminescence centers of Eu3＋ and Tb3＋, which were related to S D0→7 F2 and 5D4→7 F5 transitions respectively. Luminescence property of nanometer material doped with Eu3＋ ions of rare earth enhanced with the increase of Eu3＋ concentration.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第10期155-157,共3页
New Chemical Materials
基金
河南省科技计划项目(132102310296
132102210193)
河南省教育厅自然科学研究计划项目(2009B430017)
河南省教育厅科学技术研究重点项目(13A150103)
周口师范学院实验室开放项目(K201319)资助
关键词
发光材料
硼酸钙
稀土离子
荧光
phosphor, calcium borate, rare earth ion, Luminescence
