分别采用高温固相法和溶胶-凝胶法合成了新型红色长余辉发光材料Ca2Zn4Ti15O36∶Pr. 高温固相法合成Ca2Zn4Ti15O36需要在1200 ℃灼烧96 h才能形成纯物相. 热重分析曲线和X射线衍射分析结果表明: 溶胶-凝胶法制得的前驱体在700 ℃灼烧12 h开始形成Ca2Zn4Ti15O36物相; 在1000 ℃灼烧24 h得到Ca2Zn4Ti15O36纯物相; 最佳反应温度为1000 ℃, 激活剂Pr3+的最佳浓度为0.6mol%, 发光强度比高温固相法增强了510%.
参考文献
| [1] | Cho S H;Yoo J S;Lee J D .Synthesis and low-voltage characteristics of CaTiO3∶Pr luminescent powders[J].Journal of the Electrochemical Society,1996,143(10):L231. |
| [2] | Diallo PT.;Mahiou R.;Cousseins JC.;Boutinaud P. .RED LUMINESCENCE IN PR3+-DOPED CALCIUM TITANATES[J].Physica Status Solidi, A. Applied Research,1997(1):255-263. |
| [3] | Royce M R;Matsuda S;Tamaki H .Red emitting long decay phosphors[P].US Patent 5650094,1997. |
| [4] | Pan Yuexiao;Su Qiang;Xu Huifang et al.Synthesis and red luminescence of Pr3+-doped CaTiO3 nanophosphor from polymer precursor[J].Journal of Solid State Chemistry,2003,174:69. |
| [5] | Diallo PT.;Boutinaud P.;Mahiou R.;Cousseins JC.;Jeanlouis K. .Improvement of the optical performances of Pr3+ in CaTiO3[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(0):218-222. |
| [6] | 廉世勋,林建华,苏勉曾.Ca1-xZnxTiO3∶Pr3+, R+（R+=Li+, Na+, K+, Rb+, Cs+, Ag+）的合成和发光性质[J].中国稀土学报,2001(06):602-605. |
| [7] | Bartram S F;Foss W M .Preparation and identification of Ca2Zn4Ti15O36-A new structure type[J].Journal of the American Ceramic Society,1981,64:80. |
| [8] | 苏勉曾.固体化学导论[M].北京:北京大学出版社,1987:221. |
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%