Dual-mode luminescence from lanthanide tri-doped NaYF4 nanocrystals |
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| Authors: | Lili Wang Huan ChenDaisheng Zhang Dan Zhao |
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| Affiliation: | a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, Chinab School of Basic Sciences, Changchun University of Technology, Changchun 130012, China |
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| Abstract: | Silica-coated NaYF4:Yb/Er(Tm)/Eu nanocrystals (NCs) with a mean size of 35 nm were prepared and characterized. Each of the core/shell NCs can be dispersed in ethanol and water to form stable colloidal solutions and emit bright visible light of two colors (blue and red, green and red) by up- and down-converting excitation modes. As we know, this is the first time to obtain the distinct dual-color photos of NaYF4:Yb/Er(Tm)/Eu NCs which were dispersed in deionized water. In particular, the ability to optically manipulate luminescence color of NCs doped with RE ions opens the door to multiplexed detection for high precision in more complex biotic environment. |
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| Keywords: | Rare earth Nanoparticles Luminescence |
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