以柠檬酸为燃烧剂,乙二醇为分散剂,采用燃烧法制备了Gd3Ga5O12∶Eu3+纳米晶.利用X射线衍射仪、扫描电镜和荧光光谱对样品的结构、形貌和发光性能进行了研究.XRD研究结果表明:合成的样品均为单一的Gd3Ga5O12晶相,纳米晶的一次性粒径分布在16~ 30nm.发射光谱和激发光谱的研究表明:主发射峰来自于Eu3+的5D0→7F1的跃迁;宽激发带主要来自于Eu-O电荷迁移带.讨论了柠檬酸和乙二醇用量对晶粒尺寸、品格常数、发射和激发强度的影响.结果表明:过量的柠檬酸和适量的乙二醇有利于晶体发育和发光强度的提高.
参考文献
[1] | 倪嘉缵;洪广言.稀土新材料及新流程进展[M].北京:科学出版社,1998:178-184. |
[2] | Li YH;Hong GY .Synthesis and luminescence properties of nanocrystalline Gd2O3 : Eu3+ by combustion process[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(2):297-301. |
[3] | Bhargava R N;Gallagher D;Welker T .Doped Nanocrystals of Semiconductors-a New Class of Luminescent Materials[J].Journal of Luminescence,1994,72:416-419. |
[4] | Feng Gu;Shu Fen Wang;Meng Kai Lu;Guang Jun Zhou;Dong Xu;Duo Rong Yuan .Structure Evaluation and Highly Enhanced Luminescence of Dy~(3+)-Doped ZnO Nanocrystals by Li~+ Doping via Combustion Method[J].Langmuir: The ACS Journal of Surfaces and Colloids,2004(9):3528-3531. |
[5] | 彭智伟,王玲玲,刘晃清,黄维清,邹炳锁.Gd2O3:Eu3+纳米晶的燃烧合成及光致发光性质[J].物理学报,2007(02):1162-1166. |
[6] | Y. X. Pan;Q.Y.Zhang .White upconverted luminescence of rare earth ions codoped Gd_2(MoO_4)_3 nanocrystals[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2007(1):90-94. |
[7] | Mahalingam V;Mangiarini F;Vetrone F et al.Bright White Upeonversion Emission from Tm3 +/Yb3 +/Er3+-Doped Lu3Ga5O12 Nanocrystals[J].Journal of Physical Chemistry C,2008,112:17745-17749. |
[8] | Sun LD.;Liu CG.;Liao CS.;Yan CH.;Yao J. .Rare earth activated nanosized oxide phosphors: synthesis and optical properties[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2000(0):447-450. |
[9] | Pandozzi F;Vetrone F;Boyer J C et al.A Spectroscopic Analysis of Blue and Ultraviolet Upconverted Emissions from Gd3Ga5O12:Tm3+,Yb3 + Nanocrystals[J].Journal of Physical Chemistry B,2005,109:17400-17405. |
[10] | R. Naccache;F. Vetrone;A. Speghini .Cross-Relaxation and Upconversion Processes in Pr~(~(3+)) Singly Doped and Pr~(3+)/Yb~(3+) Codoped Nanocrystalline Gd3Ga5O_(12): The Sensitizer/Activator Relationship[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(20):7750-7756. |
[11] | 徐红梅,严红革,陈振华.柠檬酸-硝酸盐低温燃烧法制备Ce0.8Y0.2O1.9纳米粉体的机理[J].硅酸盐学报,2006(04):393-397. |
[12] | 张鹏,张晓凡,朱建锋.柠檬酸燃烧法制备Sr3Y2(BO3)4∶Eu3+荧光粉及特性研究[J].人工晶体学报,2011(05):1141-1144,1149. |
[13] | 李小慈,周俊艺,杨骏,唐渝,张渊明.燃料及燃料/氧化剂比对LaFeO3纳米粉体的影响[J].中国稀土学报,2010(06):699-704. |
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%