SrZn(WO_4)_2∶Eu^(3+)红色荧光粉的合成及性能研究  

Synthesis and luminescence property of SrZn(WO_4)_2∶Eu^(3+) red phosphor

作　　者：陈鹏[1] 杨定明[1] 王刚[1] 胡文远[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,绵阳621010

出　　处：《化工新型材料》2017年第8期101-103,共3页New Chemical Materials

基　　金：国家支持计划项目(2014BAB15B02);国家重点基础研究发展计划(973计划;2012CB722707)

摘　　要：用共沉淀法制备了适合于近紫外激发的红色荧光粉掺铕钨酸锌锶[SrZn(WO_4)_2∶Eu^(3+)],通过X射线衍射、荧光光谱对样品的结构及发光性能进行了表征。XRD分析表明样品的主衍射峰与标准卡片(JCPDS 08-0490和JCPDS15-0774)的衍射峰基本一致,说明掺杂Eu^(3+)未改变基质晶格结构。在样品的激发光谱中,394nm为主激发峰,属于Eu^(3+)的f-f跃迁吸收。在波长为394nm的紫外激发下,样品发射主峰位于616nm,归属于Eu^(3+)的~5D_0→~7F_2跃迁。当Eu^(3+)掺量为7%(mol,摩尔分数)时,样品的发光强度达到最大。SrZn（WO4）2∶Eu^（3＋） red emitting phosphors were synthesized by co-precipitation method,which were suitable for nearly ultraviolet light excitation.The phase structure and luminescent property of samples were characterized by X-ray diffraction and fluorescence spectra.The results showed that the main diffraction peaks of samples were consistent with the standard card（JCPDS08-0490 and JCPDS 15-0774）of diffraction peak.This showed that the doping Eu^（3＋） did not change matrix lattice structure.The excitation spectrum showed that the excitation spectrum peaks at 394 nm which was assigned to the f-f absorption transitions of Eu^（3＋）.The emission spectrum excited by 394 nm exhibited sharp lines peaking at 616 nm which was assigned to the ~5D0→~7F2 transitions of Eu^（3＋）.The intensity of fluorescence reached the strongest when the concentration of Eu^（3＋） arrived at 7mol%.

关 键 词：共沉淀法 SrZn(WO4)2∶Eu3+ 红色荧光粉 发光特性 

分 类 号：TQ422[化学工程]