摘要
采用了高温固相法制备了稀土离子Eu3+掺杂的Gd2Mo4O15:Eu3+荧光粉,通过X-射线衍射(XRD)和荧光光谱的测定,分别讨论了烧结温度、烧结时间以及稀土离子Eu3+掺杂量对发光性能的影响。测试结果表明Gd2Mo4O15:Eu3+荧光粉在近紫外区(UV)(393 nm)和蓝光区(464 nm)可以被有效的激发,Gd2Mo4O15:Eu3+荧光粉发出明亮的红光,对应于Eu3+的4f-4f跃迁,当Eu3+的掺杂浓度约为40 mol%时,在616 nm处的发光强度最大。在393,464 nm的吸收分别与目前应用的紫外光和蓝光LED芯片相匹配。因此,Gd2Mo4O15:Eu3+是一种可能应用在白光LED上的红色荧光材料。
Eu3＋ doped ad2M04015 phosphor were prepared by solid state method in this work. X- ray diffraction （XRD） and photoluminescence （PL） ts were used to characterize the Gd2Mo4O15：Eu3＋ phosphor. The conditions of the syntheses and their effects on the luminescence properties were compared. X-ray diffraction result confirmed the formation of Gd2Mo4015. Upon excitation with 393 and 464 nm light,all the Gd2Mo4O15：Eu3＋ powders show bright red emission due to the 4f-4f transitions of Eu3＋ ions, and the highest photoluminescence intensity at 616 nm was found at a content of about 40 mol % Eu3＋ . The excitation and emission spectra showed that this phosphor can be effectively excited by ultraviolet （393 nm） and blue （464 nm） light, nicely fitting in with the widely applied emission wavelengths of ultraviolet or blue LED chips. The Gd2Mo4O15：Eu3＋ phosphor may be a good candidate phosphor for LED application.
出处
《广西大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期336-339,共4页
Journal of Guangxi University（Natural Science Edition）
基金
广西科学基金资助项目(桂科基0731014)
广西大型仪器协作共用网资助
广西研究生教育创新计划项目资助(200810593017M74)
