Eu^(2+),Eu^(3+)掺杂对Sr_2MgSi_2O_7荧光粉发光性能的影响  

Influences of Eu^(2+) and Eu^(3+)-doped on the luminescent properties of Sr_2MgSi_2O_7 phosphors

作　　者：宁青菊[1] 乔畅君[1] 董成思 高海宁[1] 胡昌志[1] 代旭飞 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2014年第2期41-45,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅科研专项计划项目(11JK08370);陕西省大学生创新创业训练计划项目(1052)

摘　　要：采用高温固相法分别制备Eu2+和Eu3+掺杂的Sr2MgSi2O7荧光粉.在356nm近紫外光激发下,Sr2MgSi2O7:Eu3+荧光粉呈多峰红光发射,主峰位于590nm、615nm、650nm和700nm,分别对应于Eu3+离子5D1→7FJ(J=1,2,3,4)能级的跃迁.在371nm近紫外光激发下,Sr2MgSi2O7:Eu2+荧光粉发射峰介于425~550nm之间,呈蓝光发射,主峰位于476nm,对应Eu2+的4f65d1→4f7跃迁.随着Eu2+浓度的增大,发射峰强度先增大后减弱.Eu2＋ and Eu3＋ ions doped Sr2 MgSi2 O7 phosphors particles were synthesized by a conventional solid-state reaction technique respectively .When excited under 256 nm , Sr2 MgSi2 O7 ：Eu3＋ phosphors showed multimodality emission in the red region .Main peaks were located at 590 nm ,615 nm ,650 nm and 700 nm ,which correspond to the 5D1 → 7 FJ （J=1 ,2 ,3 ,4） energy level transition of the Eu3＋ ions .Sr2 MgSi2 O7 ：Eu2＋ phosphors exhibited blue emissions ranging from 425 nm to 550 nm when it was excited by 371nm near-ultravio-let （near-UV） light .The main peak was located at 476 nm that corresponded 4f65d1 →4f7 characteristics transport of the Eu2＋ ion .With the increase of Eu2＋ ion concentration ,the e-mission spectrum intensity increases first ,and then obtained the strongest emission .

关 键 词：高温固相法 SR2 MgSi2O7 Eu3+ SR2 MgSi2O7 Eu2+ 荧光粉 

分 类 号：TB34[一般工业技术—材料科学与工程]