| Upconversion luminescence ofNaYF4：Yb,Er nanocrystals with high uniformity |
| |
| 作者姓名： | 叶杨森, 江志浩, 王棋正, 朱子疏, 王潇, 随志磊, 代如成, 王中平, 张增明, 丁泽军 |
| |
| 基金项目： | Project supported by Fund for Fostering Talents in Basic Science of the National Natural Science Foundation of China （J1103207）, the National Natural Science Foundation of China （11274288, 21002097）, the National Basic Research Program of China （2011 CB932801, 2012CB933702） and Ministry of Education of China （20123402110034） |
| |
| 摘 要： | The NaYF4：Yb,Er nanocrystals were synthesized via the thermal decomposition ot metal oleate precursors, lhe nanocrys- tals in hexagonal structure were highly uniform and in size of 25 nm. The bright upconversion luminescence was observed under the excitation of 980 nm laser and the upeonversion emission spectra were investigated at different pump powers. The emission intensity ratio of red light to green light linearly increased with pump power increasing. This result indicated that there existed a large threshold power of saturation pump for the first excitation state in NaYFa：Yb,Er nanocrystals comparing to that in bulk material.
|
| 关 键 词： | 上转换发光 纳米晶体 一致性 铒 镱 泵浦功率 六边形结构 第一激发态 |
| 收稿时间： | 2013-09-25 |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
|
