摘要
为了优化荧光粉合成工艺条件,本文以Cd(NO3)2.4H2O和Na2MoO4.2H2O为原料,采用沉淀法制备Eu3+掺杂的CdMoO4微纳米颗粒。在300℃下,分别对样品保温1 h,3 h,5 h,通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)、荧光光谱分析(PL)对样品进行了表征。XRD分析结果表明产物为纯白钨矿型纯四方相CdMoO4。固定发射波长在615 nm,样品激发波长在333 nm左右出现最强锋,在534 nm、464 nm、394 nm处的锐激发谱线分别对应Eu3+的7F0→5D1、7F0→5D2、7F0→5L6的跃迁,在333 nm光激发时,主发射峰位于615 nm附近,归属于5D0→7F2能级跃迁发射,而位于589 nm附近的弱发射峰归属于5D0→7F1跃迁。
In order to optimize the process conditions for the synthesis of fluorescent powder,in this paper,CdMoO4∶ Eu3＋ nanoparticles have been synthesized by precipitation method using Cd（NO3）2·4H2O and Na2MoO4·2H2O as raw materials.Three kinds of samples under the 300 ℃ were characterized by the X-ray diffraction（XRD）,scanning electron microscopy（SEM）,fluorescence spectrometer（PL）.XRD analysis results show that the preparation of nanoparticles crystallize in ftetragonal system system of scheelite type.The excitation spectrum of CdMoO4∶ Eu3＋ monitoring the emission at 615 nm showed that the excitation spectrum consists of an intense broad band with a maximum at 333 nm and three sharp excitation spectrum,which was ascribed to the transition of 7F0→5D1、7F0→5D2、7F0→5L6The emission spectrum excited by 333 nm xhibits two launch peaks of 615 nm、589 nm,which are related to 5D0→7F1、5D0→7F1 transitions respectively.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2012年第6期1705-1708,1714,共5页
Journal of Synthetic Crystals
基金
河南省教育厅自然科学研究计划资助项目(2009B430017
2011B140025)
河南省科技厅资助项目(112300410013)
周口师范学院稀土功能材料及应用重点实验室资助项目
