采用传统高温固相反应法制备了12CaO·7Al2O3:Pr3+(C12A7:Pr3+)陶瓷,采用X射线粉末衍射(XRD)、电子扫描电镜(SEM)、激发光谱和发射光谱对样品的物相结构及发光性能进行了分析和表征.结果表明:C12A7:pr3+陶瓷样品的衍射峰与C12A7的JCPDS卡片的衍射峰数据一致,属于立方晶系.激发光谱分布在440～490 nm的波长范围内,主激发峰位于488nm处;发射光谱为多发射峰,最大发射峰位于615 nm处,是典型的Pr3+的4f4f和4f-5d激发产生能级跃迁导致的.随着Pr3+掺杂量的增加,发光强度先增强后减弱,当掺杂浓度为0.2 mol%时,在615nm处发射峰强度达到最大.
参考文献
| [1] | Hayashi K;Matsuishi S;Kamiya T et al.Light-induced Conversion of an Insulating Refractory Oxide into Persistent Electronic Conductor[J].Nature,2002,419:462-465. |
| [2] | Matsnishi S;Toda Y;M iyakawa M et al.High-density Electron Anions in a Nano-porons Single Crystal:[Ca24 Al28O64].4+ (4e-)[J].Science,2003,301:626-629. |
| [3] | Peter V. Sushko;Alexander L. Shluger;Katsuro Hayashi;Masahiro Hirano;Hideo Hosono .Role of hydrogen atoms in the photoinduced formation of stable electron centers in H-doped 12CaO · 7Al_2O_3[J].Physical review, B. Condensed matter and materials physics,2006(4):045120.1-045120.13. |
| [4] | Hosono, H;Hayashi, K;Kajihara, K;Sushko, PV;Shluger, AL .Oxygen ion conduction in 12CaO center dot 7Al(2)O(3): O2- conduction mechanism and possibility of O- fast conduction[J].Solid state ionics,2009(6/8):550-555. |
| [5] | Hayashi K;Sushko P V;Ramo D M et al.Nanoporens Crystal 12CaO-7Al2O3:A Playg round for Studies of Ultraviolet Optical Absorption of Negative Ions[J].Russian Journal of Physical Chemistry B,2007,111(08):1946-1956. |
| [6] | Sushko PV;Shluger AL;Hirano M;Hosono H .From insulator to electride: A theoretical model of nanoporous oxide 12CaO center dot 7Al(2)O(3)[J].Journal of the American Chemical Society,2007(4):942-951. |
| [7] | Wang D;Liu Y X;Liu Y C et al.Preparation and Visible Emission of Er-doped 12CaO.7Al2O3 Powder[J].Journal of Nanoscience and Nanotechnology,2008,8(03):1458-1463. |
| [8] | Synthesis and luminescence properties of Ce~(3+) doped nanoporous 12CaO·7Al_2O_3 powders and ceramics[J].Optical materials,2010(8):784. |
| [9] | 翟永清,王欣,冯仕华,张张,刘亚红.新型稀土发光材料Sr3-xMgSi3O10：Tb3+x的合成及性质[J].人工晶体学报,2010(04):906-911. |
| [10] | Zhang J C;Wang X S;Yao X .Enhancement of Luminescence and Afterglow in CaTiO3:Pr3+ by Zr Substitution for T0i[J].Journal of Alloys and Compounds,2010,498(02):152-156. |
| [11] | S. Khiari;M. Velazquez;R. Moncorge .Red-luminescence analysis of Pr~(3+) doped fluoride crystals[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):128-131. |
| [12] | Gong L;Lin Z;Ning S et al.Synthesis and Characteristics of the C12A7-O Nanopoxticles by Citric Acid Sol-gel Combusition Method[J].Materials Letters,2010,64:1322-1324. |
| [13] | G. Lakshminarayana;Jianrong Qiu .Enhancement of Pr~(3+) luminescence in TeO_2-ZnO-Nb_2O_5-MoO_3 glasses containing silver nanoparticles[J].Journal of Alloys and Compounds,2009(1/2):630-635. |
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%