摘要
采用共沉淀法制备了Eu3+、B3+共掺杂的白光LED用CaMoO4红色荧光粉,研究了不同Eu3+和B3+掺杂量对样品发光性能的影响。利用XRD和PL分别对样品的结构和发光性能进行了表征,结果表明:900°C灼烧3 h后得到CaMoO4纯相;荧光发射强度随Eu3+掺杂量的增加先增大后减小,在Eu3+掺杂量为0.18(物质的量分数)时达到最大值;随着B3+掺杂量的增加,CaMoO4:Eu03.+18,Bx3+的荧光发射强度逐渐增强,当B3+的掺杂量超过0.1时,样品的颗粒发生严重团聚。
Red emitting CaMoO4：Eu3＋, B3＋ phosphor was successfully synthesized by co-precipitation method. The effect of Eu3＋ and B3＋ doped content on the luminescent properties of the phosphor was investigated. The samples were characterized by X-ray diffraction （XRD） and photoluminescence spectrophotometer （PL）. The results showed that the phosphor sintered at 900 ℃ for 3 h was a pure CaMoO, phase; The fluorescence intensity initially increased with increasing Eu3＋ content,and then decreased,with the maximum intensity appearing at a Eu3＋ content of 0. 18 ;The emission spectrum intensity of CaMoO4： Eu3＋0.18 , Bx 3＋ increased with Eu3＋ doping content increasing,however,the agglomeration of particles are greatly increased when B3＋ doping content is over 0. 1.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2010年第2期83-86,共4页
Journal of Guangxi Normal University:Natural Science Edition
基金
广西科学基金资助项目(桂科自0991099)
广西区创新计划项目(2009106020703M40)
广西师范大学“大学生创新性实验计划”项目资助
关键词
共沉淀法
发光性能
红色荧光粉
白光LED
co-precipitation method
luminescent properties
red phosphor
white light emitting diodes
