白光LED用全色荧光粉BaMgSiO_4∶Eu^(2+),Mn^(2+)的光谱性质  

Luminescence Properties of the Full-colour Light Emitting Phosphor BaMgSiO_4∶Eu^(2+),Mn^(2+) for w-LED

作　　者：李郎楷[1] 陈永杰[1] 肖林久[1] 曹发斌[1,2] 耿秀娟[1] 

机构地区：[1]沈阳化工大学辽宁省稀土化学及应用重点实验室,沈阳110142 [2]东北大学材料与冶金学院,沈阳110004

出　　处：《材料导报》2010年第22期55-57,共3页Materials Reports

基　　金：沈阳市科技计划基金资助项目(10633070);辽宁省科技厅基金资助项目(2006223004)

摘　　要：采用高温固相法首次合成了由Eu2+和Mn2+共激活的硅酸镁钡BaMgSiO4全色荧光粉。BaMgSiO4的晶格结构中含有丰富的阳离子格位,有六配位的Ba(Ⅰ)、九配位的Ba(Ⅱ)和Ba(Ⅲ)以及四配位的Mg,为Eu2+和Mn2+提供了不同环境的占据格位。光谱测试显示BaMgSiO4∶Eu2+,Mn2+的发射光谱中有3个发射峰,分别是440nm、510nm、620nm,是合成白光较理想的三基色波带;激发光谱呈宽波带,在300~420nm之间均有较强的吸收,能与紫光InGaN芯片匹配,适用于白光LED。The Eu2＋ and Mn2＋ co-doped barium magnesium silicate BaMgSiO4 phosphors, which can emit a full-colour light, are synthesized by high temperature solid state reaction. In crystal structure of BaMgSiO4, there are several cation sites containing 6-coordinated Ba（Ⅰ ）, 9-coordinated Ba（ Ⅱ） and Ba（ Ⅲ ） and 4-coordinated Mg, which can provide different sites to Euz＋ and Mn2＋ to replace The spectra measurement show that the phosphors BaMgSiO4 ： Eu2＋ ,Mn2＋ emit three colours ight peaked at 440nm, 510nm and 620nm, which are better suitable wavelength for composing white light. The excitation spectra with broad wave band, having higher absorption between 300nm and 420nm, match with the UV-LED chips for white light emitting diode（w-LED）.

关 键 词：白光荧光粉 BaMgSiO4∶Eu2+ Mn2+ 白光LED 

分 类 号：TQ422[化学工程] TQ630.6