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Citation: LIU Shan-Shan, XU Zheng, ZHAO Su-Ling, LIANG Zhi-Qin, ZHU Wei. Effects of F^- Concentration on the Morphologies and Fluorescent Lifetimes of Ln³⁺-Doped Up-Conversion Nanocrystals[J]. Acta Physico-Chimica Sinica, ;2016, 32(8): 2108-2112. doi: 10.3866/PKU.WHXB201605091 shu

Effects of F^- Concentration on the Morphologies and Fluorescent Lifetimes of Ln³⁺-Doped Up-Conversion Nanocrystals

LIU Shan-Shan ^1,2, ,
XU Zheng ^1,2 ,
ZHAO Su-Ling ^1,2 ,
LIANG Zhi-Qin ^1,2 ,
ZHU Wei ^1,2

1.
Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 100044, P. R. China;
2.
Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, P. R. China

Received Date: 7 March 2016
Revised Date: 6 May 2016

Fund Project: The projiect was supported by the National High Technology Research and Development Program of China (863 )(2013AA032205), Natioal Natural Science Foundation of China (51272022, 11474018), and Research Fund for the Doctoral Program of Higher Education, China (20120009130005), and State Key Laboratory of New Technology of Float Glass Project in 2014 Open Topic, China.

Up-conversion luminescent NaYF₄:Yb³⁺/Er³⁺ nanomaterials were synthesized using a solvo-thermal method. It was determined that the size, morphology, and luminescence intensity of these nanoparticles can be controlled by varying the concentration of fluoride ions. Low reactant concentrations were found to always result in monodisperse, hexagonal nanocrystals, and to gradually and uniformly decrease the size of the NaYF₄ nanocrystals. In contrast, at higher concentrations, the nanocrystals grow to form a mixed phase. Fluoride ion concentrations over a specific range tend to promote the fluorescence emission of the material and may also significantly affect the fluorescent lifetime.
- Up-conversion luminescent,
- Nanomaterial,
- NaYF₄,
- Morphology control,
- Fluorescent llifetime
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Effects of F- Concentration on the Morphologies and Fluorescent Lifetimes of Ln3+-Doped Up-Conversion Nanocrystals

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Effects of F^- Concentration on the Morphologies and Fluorescent Lifetimes of Ln³⁺-Doped Up-Conversion Nanocrystals