Upconversion luminescence of NaYF4:Yb,Er nanocrystals with high uniformity
来源期刊：Journal of Rare Earths2014年第9期
论文作者：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
文章页码：802 - 805
摘 要：The NaYF4:Yb,Er nanocrystals were synthesized via the thermal decomposition of metal oleate precursors. The nanocrystals 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 upconversion 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 NaYF4:Yb,Er nanocrystals comparing to that in bulk material.
叶杨森1，江志浩1，王棋正1，朱子疏1，王潇1，随志磊1，代如成2，王中平2，张增明2，丁泽军1,3
1. Department of Physics University of Science and Technology of China2. The Centre for Physical Experiments University of Science and Technology of China3. Hefei National Laboratory for Physical Sciences at Microscale University of Science and Technology of China
摘 要：The NaYF4:Yb,Er nanocrystals were synthesized via the thermal decomposition of metal oleate precursors. The nanocrystals 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 upconversion 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 NaYF4:Yb,Er nanocrystals comparing to that in bulk material.
关键词：
