近紫外光激发的Ba_3MgSi_2O_8:Eu^(2+),Mn^(2+)全色荧光材料的发光性质研究  

Luminescence properties of Ba_3MgSi_2O_8:Eu^(2+),Mn^(2+) full-color phosphor excited by near-UV light

作　　者：毛智勇[1] 王达健[1] 马亮[1] 陆启飞[1] 刘凌云[1] 李雪征[1] 刘艳花[1] 

机构地区：[1]天津理工大学理学院,天津300384

出　　处：《天津理工大学学报》2008年第6期9-12,共4页Journal of Tianjin University of Technology

基　　金：天津市科委基金项目(06YFJMJC02300;06TXTJJC14602);教育部显示材料与充电器件重点实验室资助;天津光电子材料与器材重点实验室资助

摘　　要：用稀土复合溶胶雾化-热解方法制备了Ba3MgSi2O8:Eu2+,Mn2+荧光材料,在近紫外光激发下,可同时发射红、绿和蓝三光进而合成白光.用微结构参数与发射波长的半定量关系,验证了505 nm绿光发射来自于Ba3MgSi2O8主基质相中伴生的微量Ba2SiO4相;基于Mn2的激发光谱和Eu2+的发射光谱的重叠关系,红光来源于Eu2+的蓝光发光中心的能量传递,分析了Eu2+和Mn2+之间的能量传递机理.A phosphor, Ba3 MgSi2O8 ： Eu^2＋ , Mn^2＋ is synthsizerd via rare- earth composite sol spray- pyrolysis route. This phosphor has three emission bands of red, green and blue, which can be combined to white light under near- UV light irradiation. A semi- quantitative formula between microstructure parameter and lowest energy edge, verified that 505 nm - peaked green emission originate from a coexisting Ba3SiO4 phase in dominant Ba3MgSi2O8 host; In terms of overlap relationship between excitation band of Mn^2＋ and emission band of Eu^2＋ , red emission ascribe to some energy transfer from blue luminescent center of Eu^2 ＋ , and the mechanisms of energy transfer between Eu- Mn are detailed.

关 键 词：荧光材料 Ba3MgSi2O8:Eu^2+Mn^2+ 全色 能量传递 白光二极管 

分 类 号：O482.31[理学—固体物理]