采用复合沉淀法制备了具有良好烧结活性的纳米级Y1.34Gd0.60Eu0.06O3粉体. 经850℃/2h煅烧后, 得到晶粒尺寸为30～40nm, 且基本无团聚的Y1.34Gd0.60Eu0.06O3发光粉体, 粉体比表面积为23m2/g. 该粉体经过适当的干压和等静压成型后, 于1800℃以上温度烧结6h, 可以获得Y1.34Gd0.60Eu0.06O3透明陶瓷. 获得的透明陶瓷材料在波长250nm的紫外光激发下发射出较强的红光, 发射主峰位于610nm, 对应于掺杂Eu3+的5D0-7F2跃迁.
Y1.34Gd0.60Eu0.06O3 nanopowders with high sinterability were prepared via a complex co-precipitation
method. The nanopowder obtained has an average particle size of 30～40nm, weakly agglomerate after calcining at 850℃ for 2h. After dry-pressed and
isostatic pressed at 200MPa, the green body can be sintered to transparency at 1800℃ for 6h. The as-sintered transparent ceramics show
intense red luminescence at 610nm under 250nm UV excitation, corresponding to 5D0-7F2 transition of Eu3+ ion.
参考文献
| [1] | Lu J, Bisson J F, Takaichi K, et al. Appl. Phys. Lett., 2003, 83: 1101-1103. [2] Takaichi K, Yagi H, Lu J, et al. Appl. Phys. Lett., 2004, 84: 317-319. [3] Lupei A, Lupei V, Taira T, et al. J. Lumin., 2003, 102-103: 72-76. [4] Lu J, Takaichi K, Uematsu K, et al. Appl. Phys. Lett., 2002, 81: 4324-4326. [5] 吉林物理所, 中国科学技术大学. 固体发光. 1976. 57-60. [6] Blasse G, Grabmaier B C. Luminescent Materials, 1994, Berlin:Springer-Verlag. [7] Greskovich C D, Duclos S. Ann. Rev. Mater. Sci., 1997, 27: 69-77. [8] Brecher C, Wei G C, Rhodes W H. J. Am. Ceram. Soc., 1990, 73: 1473-1488. [9] Roth R S, Phase Equillibria Diagrams, 1995, Ohio: Published by the American Ceramic Society. 127. [10] Saito N, Matsuda S, Ikegami T. J. Am. Ceram. Soc., 1998, 81: 2023-2028. [11] Kim Y K, Kim H K, Kim D K, et al. J. Mater. Res., 2004, 19: 414-417. [12] Liu B, Chen Y, Shi C, et al. J. Lumin., 2003, 101: 155-159. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%