采用高温固相法制备了Sr3-x-v(Al1-zBz)2O6∶Eux2+,Dyy3+(x,y,z=0,0.1)长余辉发光粉.利用XRD测试仪、荧光分光光度计和热释光计量仪分别研究了Eu、Dy和B的掺杂对材料晶体结构、激发和发射光谱、余辉衰减特性和热释光光谱的影响.结果表明,Eu、Dy共掺杂的样品中Dy3+的掺杂有利于Eu3+还原为Eu2+.余辉曲线的拟合结果表明,Eu、Dy、B共掺的样品具有最好的余辉特性,这源于该样品具有最大的发光强度常数和时间衰减常数.Eu、Dy、B共掺样品的热释光曲线很好的由8个高斯峰拟合,分析了掺杂引入的缺陷类型及对应的热释光峰位,改进了长余辉发光材料电子转移发光模型.
参考文献
| [1] | Yamamoto H;Matsuzawa T .Mechanism of long phosphorescence of SrAl2O4:Eu2+, Dy3+ and CaAl2O4:Eu2+, Nd3+[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,1997(0):287-289. |
| [2] | Jianrong Qiu;K. Miura;H. Inouye;S. Fujiwara;T. Mitsuyu;K. Hirao .Blue emission induced in Eu~(2+)-doped glasses by an infrared femtosecond laser[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1999(2/3):185-188. |
| [3] | 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. |
| [4] | 胡劲,孙加林,刘建良,施安,徐茂,王开军.铝酸锶长余辉材料制备新工艺及发光机理[J].材料与冶金学报,2006(02):109-114. |
| [5] | 吕兴栋,舒万艮.SrAl2O4：Eu2+,Dy3+晶格点缺陷的形成及其在发光材料中的作用[J].无机化学学报,2006(05):808-812. |
| [6] | Bos, A.J.J.;Van Duijvenvoorde, R.M.;Van Der Kolk, E.;Drozdowski, W.;Dorenbos, P. .Thermoluminescence excitation spectroscopy: A versatile technique to study persistent luminescence phosphors[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2011(7):1465-1471. |
| [7] | V. Singh;S. Watanabe;T.K. Gundu Rao;I.-J. Lee .Photoluminescence, thermoluminescence and electron spin resonance studies on Eu~(3+) doped Ca_3Al_2O_6 red phosphors[J].Applied physics. B, Lasers and optics,2011(4):1019-1027. |
| [8] | Pieter Dorenbos .Absolute location of lanthanide energy levels and the performance of phosphors[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(0):315-317. |
| [9] | 徐超,卢佃清,刘学东.初次退火温度对长余辉发光材料性能的影响[J].材料热处理学报,2012(z1):24-28. |
| [10] | 杨柳,曹立新,苏革,柳伟,李京.一种新型红色长余辉材料的制备及其发光性能[J].功能材料,2010(05):819-821,826. |
| [11] | Ping Zhang;Mingxia Xu;Zhentai Zheng .Synthesis and characterization of europium-doped Sr3Al2O6 phosphors by sol-gel technique[J].Journal of Sol-Gel Science and Technology,2007(1):59-64. |
| [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] | 王林生,黄可龙,周健,赖华生,文小强.助熔剂对BAM：Eu2+荧光粉合成机理和发光强度的影响[J].稀土,2012(01):47-54. |
| [14] | 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. |
| [15] | Zhang, J.;Zhang, X.;Shi, J.;Gong, M. .Luminescent properties of green- or red-emitting Eu~2-doped Sr_3Al_2O_6 for LED[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2011(12):2463-2467. |
| [16] | Chang, CK;Li, W;Huang, XJ;Wang, ZY;Chen, X;Qian, X;Guo, R;Ding, YL;Mao, DL .Photoluminescence and afterglow behavior of Eu2+, Dy3+ and Eu3+, Dy3+ in Sr3Al2O6 matrix[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2010(3):347-350. |
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