用湿化学方法合成了Ce3+/Dy3+及Ce3+/Tb3+共掺GdAl3(BO3)4发光材料.利用X射线衍射仪对其进行了物相分析,结果表明:合成物为纯的六方相GdAl3(BO3)4微晶.利用荧光分光光谱仪进行光谱分析,测定了合成样品的激发和发射光谱.发现在紫外激发下,GdAl3(BO3)4:Dy荧光粉发射出很强的偏黄的白光,其发射峰分别位于480,575和665 nm,对应于Dy3+的4F9/2→6H15/2,13/2,11/2跃迁.掺Ce3+对Dy3+起到敏化作用,GdAl3(BO3)4:Dy,Ce发出很亮的暖白光,且强度是GdAl3(BO3)4:Dy的3倍左右.同时,在Ce3+/Tb3+共掺的样品中,由于Ce3+与Tb3+间的能量传递,Tb3+的541 nm特征峰显著增强.
Ce3+/Dy3+and/or Ce3+/Tb3+ codoped GdAl3(BO3)4 phosphors were synthesised by a wet-chemical method.The phosphors were characterized by X-ray diffraction and fluorescence measurements.The GdAl3(BO3)4:Dy phosphors show intense emissions centred at 480,575,and 665 nm upon excitation by ultraviolet-blue light,which are associated with the typical transitions of 4F9/2→6H15/2,4F9/2→+6H13/2,and 4F9/2→6H11/2 of Dy3+,respectively.The presence of Ce3+ resulted in an enhancement of Dy3+ emission intensity by a factor of～3、The characteristic green emission at 541 nm of Tb3+ doped GdAl3(BO3)4 has been significantly enhanced with Ce3+ doping,confirming that energy transfer from Ce3+ to Tb3+ happens in the compounds.
参考文献
| [1] | Gu F.;Wang SF.;Lu MK.;Zhou GJ.;Liu SW.;Xu D.;Yuan DR. .Effect of Dy3+ doping and calcination on the luminescence of ZrO2 nanoparticles[J].Chemical Physics Letters,2003(1/2):185-189. |
| [2] | Lin C K et al.[J].Optical Materials,2006,28:913. |
| [3] | Su Q et al.[J].Journal of Alloys and Compounds,1995,225:103. |
| [4] | Han S D et al.[J].Materials Science and Engineering B:Solid State Materials for Advanced Technology,2006,129:126. |
| [5] | Rakov N et al.[J].Chemical Physics Letters,2004,400:553. |
| [6] | Jose M T et al.[J].Journal of Alloys and Compounds,2005,397:211. |
| [7] | Martínez Vázquez R et al.[J].Journal of Physics:Condensed Matter,2004,16:465. |
| [8] | Kellendonk F et al.[J].Journal of Chemical Physics,1982,76(03):1194. |
| [9] | Park W.;Summers CJ.;Do YR.;Yang HG.;Lee RY. .Photoluminescence properties of A1(3)GdB(4)O(12): Eu phosphors[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2000(1):28-31. |
| [10] | De Vries A J et al.[J].Journal of Luminescence,1988,39(03):153. |
| [11] | Lagerwey A F et al.[J].Chemical Physics Letters,1975,31(01):27. |
| [12] | Yang C H et al.[J].Materials Science and Engineering B:Solid State Materials for Advanced Technology,2007,137:195. |
| [13] | Zhang QY.;Pita K.;Buddhudu S.;Kam CH. .Luminescent properties of rare-earth ion doped yttrium silicate thin film phosphors for a full-colour display[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2002(23):3085-3090. |
| [14] | Zhang QY.;Pita K.;Kam CH. .Sol-gel derived zinc silicate phosphor films for full-color display applications[J].The journal of physics and chemistry of solids,2003(2):333-338. |
| [15] | Jia P K et al.[J].Journal of Solid State Chemistry,2005,178:2734. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%