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真空紫外光激发下掺Pr3+铝酸盐的自陷激子对Pr3+发光的影响
The influence of self-trapped exciton on luminescence of Pr3+ in aluminate under vacuum ultraviolet excitation
【摘要】 研究了SrAl12O19:Pr3+和Y3Al5O12(YAG):Pr3+在20K,77K和300K的真空紫外(VUV)光谱,二者除了表现出Pr3+特有的发射性质外,还产生了一种特殊的发射现象,即自陷激子(STE)发射,并且其随着稀土离子浓度和温度的降低而增强.还着重讨论了自陷激子对Pr3+发光的影响.
【Abstract】 Spectroscopic properties of SrAl 12 O 19 :Pr 3+ and Y3Al5O 12 :Pr 3+ have been studied under vacuum ultraviolet excitation at 20, 77 and 300K. Selftrapped exciton(STE) luminescence in these aluminates were observed besides the characteristic emissions of Pr 3+ . Furthermore, the emission of STE became dominant as the concentration of activators and temperature decreased. The influence of STE on the luminescence of Pr 3+ in aluminates was also emphasized.
【关键词】 自陷激子;
真空紫外;
Pr3+;
本征激发;
【Key words】 self-trapped exciton; vacuum ultraviolet; trivalent praseodymium ion; fundamental excitation;
【Key words】 self-trapped exciton; vacuum ultraviolet; trivalent praseodymium ion; fundamental excitation;
【基金】 国家自然科学基金(批准号:10204001);国家重点基础研究发展计划(973项目)(批准号:2003CB314707);教育部同步辐射博士创新基金(批准号:20041201S)资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2006年05期
- 【分类号】O482.31
- 【被引频次】5
- 【下载频次】286