溶胶-凝胶法制备Zn_2SiO_4:Mn荧光粉及其发光特性的研究  

Preparation by Sol-gel Process and Photoluminescence of Zn_2SiO_4:Mn Nanoparticles

作　　者：高丽珍[1] 李天锋[1] 闫玉丽[1] 张丽婷[1] 张伟风[1] 

机构地区：[1]河南大学物理与信息光电子学院,河南开封475004

出　　处：《许昌学院学报》2006年第5期41-43,共3页Journal of Xuchang University

基　　金：河南大学校内基金(05YBZR018)

摘　　要：利用溶胶-凝胶法制备Zn2SiO4和Zn2SiO4:Mn凝胶,将其在110℃下烘干成粉状;将烘干后的粉末在1000℃高温下煅烧2 h,得到含Zn2SiO4和Zn2SiO4:Mn纳米颗粒.XRD结果表明,测定的式样为-αZn2SiO4晶相,并且掺杂前后晶相没有发生明显变化;试样的荧光光谱测定的结果表明,Mn2+掺杂的Zn2SiO4发绿色荧光.最后对这种物质的发光机理进行了分析.Zn2SiO4 ：Mn is prepared by a sol-gel process at weak oxidation atmosphere of 1000 ℃ and keeping this temperature for 2 hours. X- ray diffraction（XRD） pattern , excitation spectra and emission spectra of the doped and undoped samples are investigated. The result indicates that the XRD pattern of the doped sample exhibits a willemite structure. No characteristic diffraction peaks of dopant are observed. A novel photoluminescence phenomenon of Mn^2＋ is observed from Zn2SiO4 ：Mn sample （blue emission bands）. It is very important for the applications and researches of Zn2SiO4 ：Mn luminescent materials.

关 键 词：Zn2SiO4 荧光 溶胶-凝胶法 

分 类 号：O433[机械工程—光学工程]