采用水热法制备了高纯度六角相NaGdF4纳米颗粒,对样品的结构与形貌进行了表征.在980 nm激光激发下,研究了yb3+/Tm3+共掺杂NaGdF4纳米颗粒的近红外上转换发光特性；分析了yb3+/Tm3+共掺杂NaGdF4的能量传递机理,研究了泵浦功率与发光强度的关系.结果表明:共掺杂NaGdF4纳米颗粒在980 nm下可发射出800 nm的强近红外光,其与475 nm蓝光发射的强度比为42.样品中800 nm发射对应两光子过程,475 nm发射对应三光子过程.
参考文献
| [1] | Blasse G;Grabmaier B C.Luminescent Materials[M].Beilin:Springer-Verlag,1994 |
| [2] | 沈华翔;王锋;樊先平 .NaGdF4:Eu3晶体的水热合成制备与发光性能[J].稀有金属材料与工程,2010,39(增刊2):415-417. |
| [3] | 曹健,张霞,郝振东,张家骅.NaGdF4：Yb3+,H03+与GdF3：Yb3+,H03+纳米材料的合成、形貌控制与发光性质[J].发光学报,2011(12):1233-1237. |
| [4] | Kondo H;Hirai T;Hashimoto S .Dynamical behavior of quantum cutting in alkali gadolinium fluoride phosphors[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2004(1/4):59-63. |
| [5] | Huang-Hao Yang;Shu-Qiong Zhang;Xiao-Lan Chen;Zhi-Xia Zhuang;Jin-Gou Xu;Xiao-Ru Wang .Magnetite-Containing Spherical Silica Nanoparticles for Biocatalysis and Bioseparations[J].Analytical chemistry,2004(5):1316-1321. |
| [6] | Zhi Ya Ma;Dosi Dosev;Mikaela Nichkova .Synthesis and bio-functionalization of multifunctional magnetic Fe3O4@Y2O3:Eu nanocomposites[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2009(27):4695-4700. |
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%