期刊文献+

SrAl_2O_4∶Eu^(2+),Dy^(3+)纳米长余辉发光材料的制备与表征 被引量:10

Preparation and Charaterization of Long-lasting Phosphorescence SrAl_2O_4∶Eu^(2+),Dy^(3+) Nanoparticles
下载PDF
导出
摘要 采用溶胶鄄凝胶法制备了SrAl2O4∶Eu2+,Dy3+纳米长余辉发光材料,研究了pH值、反应温度和络合剂等对溶胶鄄凝胶形成的影响,研究了灼烧温度对SrAl2O4∶Eu2+,Dy3+晶相、颗粒尺度和发光性能的影响。利用XRD,SEM,光谱分析等手段对产物进行了结构和性能分析。实验结果表明,在800℃时SrAl2O4晶相开始形成但没有发光,而在1100℃烧结的样品则具有很好的发光性能。样品平均晶粒尺寸随灼烧温度升高而增加,平均晶粒尺寸为20~40nm。样品的激发光谱是峰值在240,330,378和425nm的连续宽带谱,发光光谱是峰值在523nm的宽带谱,与SrAl2O4∶Eu2+,Dy3+粗晶材料相比,发光光谱发生了“红移”现象。样品的热释光峰值位于157℃,与SrAl2O4∶Eu2+,Dy3+粗晶材料相比,峰值向低温移动了13℃。 Long persistent phosphorescence SrAl2O4:Eu2+,Dy3+ nanoparticles were synthesized through Sol-Gel method under a reducing atmosphere at lower temperature. The influences of pH value, reaction temperature and complexing agents, etc. on Sol-Gel process were studied. Effects of calcination temperatures on the crystalline phases, size and phosphorescence properties of SrAl2O4,:Eu2+,Dy3+ were also studied. The structure and properties of products were analyzed by XRD, SEM, Excitation spectrum, Emission spectrum and thermal-luminescence spectroscopy. The SrAl2O4, crystalline phase was initially formed at 800 degreesC. The SrAl2O4:Eu2+ Dy3+ nanoparticles with bright phosphorescence propertymere formed at 1100degreesC. The particles size was about 20similar to40 nm. Both the peaks of the excitation spectrum at 240, 330, 378, 425 nm and the peak of emission spectrum at 523 nm were shift to red wavelength compared with the SrAl2O4:Eu2+,Dy3+ coarse crystals.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2004年第12期1397-1401,共5页 Chinese Journal of Inorganic Chemistry
基金 吉林省自然科学基金资助项目(No.20000516) 兵器预研支撑基金项目(No.YJ0267047)
关键词 溶胶-凝胶法 SRAL2O4:EU^2+ DY^3+ 纳米粉体 长余辉发光材料 制备 SrAl2O4 : Eu2+,Dy3+ nanoparticle sol-gel method long lasting phosphorescence
  • 引文网络
  • 相关文献

参考文献9

  • 1Nakazawa E., Mochida T. J. Lumin., 1997,72-74,236.
  • 2Jia W. Y., Yuan H. B., Lu L. Z. et al. J. Lumin., 1998,76-77, 424.
  • 3Bhargava R. N., Gallagher D., Hong X. et al. Phy. Rev. Lett.,1994,72,416.
  • 4ZHANGXi-Yan(张希艳) LULi-Ping(卢利平) WANGXiaoChun(王晓春).Guishuanyan Xuebao(J. Chin. Ceram. Soc.),2003,31(3):268-268.
  • 5熊煜虹,王东,陆毅青,李永祥,殷庆瑞.无机盐溶胶-凝胶工艺制备长余辉发光粉体的研究[J].无机材料学报,2003,18(2):451-456. 被引量:8
  • 6Katsumata T., Nabae T., Sasajima K. et al. J. of the Electrochem. Soc., 1997,144(9),243.
  • 7Matsuzawa T., Aoki Y., Takeuch N. I. J. Electrochem. Soc.,1996,143(8),2670.
  • 8YUJiang-Bo(于江波) YUANXi-Ming(袁曦明) CHENJingZhong(陈敬中).Cailiao Daobao(Chinese J. Mater. Rev.),2001,15(1):30-30.
  • 9ZHANG Xi-Yang ( 张希艳 ) Thesis for the Doctorate of Changchun University of Science and Technongy(长春理工大学博士论文), 2003.

二级参考文献2

共引文献7

同被引文献130

引证文献10

二级引证文献18

相关主题

;
使用帮助 返回顶部