以SrAl2O4∶Eu发光材料为基础,通过对基质的部分修饰,合成了(Sr1-xMx)Al2O4(M=Ca,Ba)∶Eu磷光体,并利用XRD对其晶体结构进行了研究,结果表明:加入Ca后,原来在室温下稳定存在的属于单斜晶系的鳞石英结构SrAl2O4相逐渐变成六方晶系,证明Ca有稳定六方相的作用,而加入Ba晶形则不发生改变.同时研究了该发光粉的发射光谱,讨论了Ca和Ba的引入对发光性能的影响.
参考文献
| [1] | Mastsuzama T;Aoki Y;Takeuchi N et al.A new long phosphorescent phosphor with high brightness SrAl2O4:Eu2+,Dy3+[J].Journal of the Electrochemical Society,1996,143(08):2670-2673. |
| [2] | Haranath D.;Shanker V.;Chander H.;Sharma P. .Studies on the decay characteristics of strontium aluminate phosphor on thermal treatment[J].Materials Chemistry and Physics,2003(1):6-10. |
| [3] | 林元华,张中太,唐子龙,张枫,陈清明.掺杂稀土CaAl 2O4基发光材料的制备及其发光机制[J].材料工程,2001(08):29-31. |
| [4] | 张天之,苏锵,王淑彬.MAl2O4：Eu2+、RE3+长余辉发光性质的研究[J].发光学报,1999(02):170-175. |
| [5] | 唐明道,李长宽,高志武,许少鸿,蒋雪茵,蔡锟.SrAl2O4：Eu2+的长余辉发光特性的研究[J].发光学报,1995(01):51-56. |
| [6] | Nakazawa E;Mochida T .Traps in SrAl2O4:Eu2+ phosphor with rare-earth ion doping[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,1997(0):236-237. |
| [7] | Ravichandran D;Erdei S;Roy Rustum;White William B;Johnson Shikik T .Crystal chemistry and luminescence of the Eu super(2+)-activated alkaline earth aluminate phosphors[J].Displays: Technology and Applications,1999(4):197-203. |
| [8] | 赵敏光;余万伦.晶体场理论[M].成都:四川教育出版社,1988 |
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