采用高温固相法制备了Sr0.96Al2O4∶Eu0.02,Dy0.02,B0.08长余辉发光材料.利用XRD衍射仪、荧光分光光度计和亮度计分别研究两步退火工艺中初次退火温度对晶体结构、激发光谱、发射光谱和余辉衰减特性的影响.结果表明,随着样品初次退火温度的升高,Dysr陷阱中的电子浓度出现一峰值,而Vo陷阱中的电子浓度逐渐减小.初次退火为1150℃×2h,第二次退火为1350℃×6 h的样品具有最大的Dysr陷阱中的电子浓度,且具有最大的时间衰减常数,这使该样品具有最好的长余辉特性.初次退火温度太高时,出现了AlEuO3晶相,Dysr陷阱中的电子浓度迅速降低.
参考文献
| [1] | Aitasalo T.;Deren P.;Holsa J.;Jungner H.;Krupa JC.;Lastusaari M. Legendziewicz J.;Niittykoski J.;Strek W. .Persistent luminescence phenomena in materials doped with rare earth ions[J].International Journal of Quantum Chemistry,2003(1/2):114-122. |
| [2] | He ZY;Wang XJ;Yen WM .Investigation on charging processes and phosphorescent efficiency of SrAl2O4 : Eu,Dy[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2006(0):309-313. |
| [3] | Han SD;Singh KC;Cho TY;Lee HS;Jakhar D;Hulme JP;Han CH;Kim JD;Chun IS;Gwaka J .Preparation and characterization of long persistence strontium aluminate phosphor[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2008(3):301-305. |
| [4] | Yu-Lun Chang;Hsing-I. Hsiang;Ming-Tsai Liang .Characterization of strontium aluminate phosphors prepared from milled SrCO_3[J].CERAMICS INTERNATIONAL,2009(3):1027-1032. |
| [5] | Fu Zuoling;Zhou Shihong;Yu Yingning et al.Combustion synthesis and luminescence properties of nanocrystalline[J].Chemical Physics Letters,2004,395:285-289. |
| [6] | Kamiyanagi Y;Kitaura M;Kaneyoshi M .Temperature dependence of long-lasting afterglow in SrAl2O4 : Eu,Dy phosphor[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(0):509-511. |
| [7] | T.-P. Tang;C.-M. Lee;F.-C. Yen .The photoluminescence of SrAl_2O_4: Sm phosphors[J].CERAMICS INTERNATIONAL,2006(6):665-671. |
| [8] | Avdeev Maxim;Yakovlev Sergey;Yaremchenko Aleksey A et al.Transitions between P21,P63 (√3A),and P6322 modifications of SrAl2O4 by in situ high-temperature X-ray and neutron diffraction[J].Journal of Solid State Chemistry,2007,180:3535-3544. |
| [9] | Saines PJ;Elcombe MM;Kennedy BJ .Lanthanide distribution in some doped alkaline earth aluminates and gallates[J].International Journal of Quantum Chemistry,2006(3):613-622. |
| [10] | Qiang, RF;Xiao, SG;Ding, JW;Yuan, WH;Zhu, CQ .Red emission in B3+- and Li+-doped SrAl2O4:EU3+ phosphor under UV excitation[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2009(8):826-828. |
| [11] | 朱胜超 .稀土激活的多颜色长余辉发光材料的特性研究[D].保定:河北大学,2003. |
| [12] | 崔彩娥,王森,黄平.Dy含量对红色长余辉发光材料Sr3Al2O6：Eu2+,Dy3+性能的影响[J].物理学报,2009(05):3565-3571. |
| [13] | 杨华明,李云龙,唐爱东,张向超,周灿伟.固相合成Co3O4纳米晶及晶化动力学研究[J].材料热处理学报,2005(04):1-4. |
| [14] | Lu X;Zhong MJ;Shu WG;Yu QM;Xiong XQ;Wang RQ .Alumina encapsulated SrAl2O4 : Eu2+, DY3+ phosphors[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2007(2):83-86. |
| [15] | Du Haiyan,Li Gengshen,Sun Jiayue.Preparation of Non-Grinding Long Afterglow SrAl2O4:Eu2+, Dy3+ Material by Microwave Combustion Method[J].稀土学报（英文版）,2007(01):19-22. |
| [16] | 孙家跃;杜海燕;胡文祥.固体发光材料[M].北京:化学工业出版社,2003:545-549. |
| [17] | Lu X;Zhong MJ;Shu WG;Yu QM;Xiong XQ;Wang RQ .Alumina encapsulated SrAl2O4 : Eu2+, DY3+ phosphors[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2007(2):83-86. |
| [18] | 徐叙瑢;苏勉曾.发光学与发光材料[M].北京:化学工业出版社,2004:109-102. |
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