摘要
以共沉淀法制备的La(OH)3:Eu^(3+)为前驱体,采用KCl-LiCl熔盐法在700℃成功制备了掺杂均匀的LaOCl∶Eu^(3+)的发光材料,SEM及TEM结果显示的LaOCl∶Eu^(3+)粉体的尺寸约为1μm~2μm,且形貌规整,XRD及EDS结果表明Eu^(3+)已较好地掺入了LaOCl晶格,为制备均匀Eu^(3+)掺杂的LaOCl∶Eu^(3+)发光材料提供了一种简便的方法。对比研究了不同比例Eu^(3+)掺杂LaOCl∶Eu^(3+)的发光特性,掺杂Eu^(3+)后LaOCl∶Eu^(3+)具有较优的发光性能,Eu^(3+)的^(5)D_(0)→^(7)F_(2)跃迁使得LaOCl∶Eu^(3+)具有红光发射特征。激发和发射光谱结果显示6%Eu^(3+)掺杂的LaOCl∶Eu^(3+)具有较强的激发和发射强度。
With coprecipitation synthesized La(OH)3:Eu^(3+)as the precursor,Eu^(3+)doped LaOCl phosphor was successfully obtained in a KCl-LiCl eutectic molten salt at 700℃.The SEM and TEM results show that the size of LaOCl∶Eu^(3+)powder is about 1~2μm with a regular structure.The XRD and EDS results show that Eu^(3+)ions have been doped into the LaOCl lattice,indicating molten salt method is a facile way to synthesize the Eu^(3+)doped luminescent materials.The luminescence characteristics of the LaOCl∶Eu^(3+)with various amount of Eu^(3+)doped was studied,it was found that the luminescence property of the doped material was significantly improved.The^(5)D_(0)→^(7)F_(1)transition radiation of LaOCl∶Eu^(3+)has an obvious red light emission.The results show that 6%Eu^(3+)doped LaOCl∶Eu^(3+)has a stronger excitation and emission intensity.
作者
吴文毫
王咪艳
周豪
柏富生
李松
兰苑培
WU Wen-hao;WANG Mi-yan;ZHOU Hao;BO Fu-sheng;LI Song;LAN Yuan-pei(College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving,Guiyang 550025,China)
出处
《稀土》
EI
CAS
CSCD
北大核心
2021年第2期1-7,共7页
Chinese Rare Earths
基金
国家自然科学基金项目(51804088)
黔科合基础[2020]1Y219
黔科合基础[2019]1082
黔科合平台人才[2018]5781
黔科合平台人才[2017]5788-37号
贵州大学人基合字(2017)04
贵州大学SRT字(2018)314号。
作者简介
吴文毫(1996-),男,贵州仁怀人,主要从事稀土发光材料研究;通讯作者:兰苑培,博士,副教授,E-mail:yplan@gzu.edu.cn。
