采用溶胶-凝胶(sol-gel)法制备稀土离子Eu掺杂的Sr2MgSi2O7硅酸盐基发光材料,通过X射线衍射仪(XRD)、透射电子显微镜(TEM)、荧光分光光度计(PL)对样品的晶体结构、形貌及光学性能进行测试.XRD测试结果表明,在较低的处理温度下可获得Sr2MgSi2O7,但样品中也存在其它的杂质相.荧光光谱测试结果表明,经空气中处理的Eu3+在395 nm光激发下产生590 nm、610 nm的发射峰,通过氢气还原处理后得到的Eu2+离子的发光从250到400 nm的紫外区可以激发峰值为460 nm左右的宽谱带,且随氢气还原温度的升高和Eu离子掺杂浓度的提高发光强度也增强.
参考文献
| [1] | Lin YH.;Nan CW.;Zhou XS.;Wu JB.;Wang HF.;Chen DP.;Xu SM. .Preparation and characterization of long afterglow M2MgSi2O7-based (M : Ca, Sr, Ba) photoluminescent phosphors[J].Materials Chemistry and Physics,2003(3):860-863. |
| [2] | 刘淼,施朝淑,戚泽明,刘波.（CaO）20.68（MgO）1.32（SiO2）4S2∶Eu2+,Dy3+红光材料的制备与发光特性[J].中国稀土学报,2007(01):51-54. |
| [3] | Anedda A.;Cannas M.;Corpino R.;Gelardi FM.;Leone M.;Boscaino R. .EXPERIMENTAL EVIDENCE OF THE COMPOSITE NATURE OF THE 3.1 EV LUMINESCENCE IN NATURAL SILICA[J].Nuclear Instruments and Methods in Physics Research, Section B. Beam Interactions with Materials and Atoms,1996(1/4):360-363. |
| [4] | Yuanhua Lin;Zhongtai Zhang;Zilong Tang .Luminescent properties of a new long afterglow Eu~(2+) and Dy~(3+) activated Ca_3MgSi_2O_8 phosphor[J].Journal of the European Ceramic Society,2001(5):683-685. |
| [5] | Lin YH.;Nan CW.;Zhou XS.;Wu JB.;Wang HF.;Chen DP.;Xu SM. .Preparation and characterization of long afterglow M2MgSi2O7-based (M : Ca, Sr, Ba) photoluminescent phosphors[J].Materials Chemistry and Physics,2003(3):860-863. |
| [6] | 刘淼,施朝淑,戚泽明,刘波.（CaO）20.68（MgO）1.32（SiO2）4S2∶Eu2+,Dy3+红光材料的制备与发光特性[J].中国稀土学报,2007(01):51-54. |
| [7] | Kim J S;Mho S W;Park Y H et al.White-1ight-emitting Eu2+ and Mn2+-codoped silicate phosphors synthesized through combustion process[J].Solid State Communications,2005,136(9-10):504-507. |
| [8] | Ding WJ;Wang J;Zhang M;Zhang QH;Su Q .Luminescence properties of new Ca-10(Si2O7)(3)Cl-2 : Eu2+ phosphor[J].Chemical Physics Letters,2007(4-6):301-305. |
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