Size and morphology controllable synthesis of oil-dispersible LaF3 : Yb,Er upconversion fluorescent nanocrystals via a solid-liquid two-phase approach

作者：Liu Chenghui; Sun Jia; Wang Hui; Chen Depu^*

来源：Scripta Materialia, 2008, 58(2): 89-92.

DOI：10.1016/j.scriptamat.2007.09.032

• single-crystal growth
• nanocrystalline materials
• optical materials
• upconversion fluorescence

Oil-dispersible Yb-Er co-doped LaF3 upconversion (UC) fluorescent nanocrystals (NCs) were synthesized via a liquid-solid twophase approach. The nucleation and growth of the NCs only occurred in the interface of the two phases, which made the process very slow, and thus well-crystallized and regular-shaped LaF3:Yb,Er NCs were obtained. The size, morphology and UC fluorescence of the NCs can be controlled by varying the solvent, temperature and reaction time.

• 出版日期2008-1
• 单位清华大学