Synthesis of NaYF4:Yb3+/Er3+ upconverting nanoparticles in a capillary-based continuous microfluidic reaction system

Haichun Liu; Ola Jakobsson; Can T. Xu; Haiyan Xie; Thomas Laurell; Stefan Andersson-Engels

doi:10.1117/12.874348

11 February 2011 Synthesis of NaYF₄ : Yb³⁺/Er³⁺ upconverting nanocrystals in a capillary-based continuous microfluidic reaction system

Haichun Liu, Ola Jakobsson, Can T. Xu, Haiyan Xie, Thomas Laurell, Stefan Andersson-Engels

Author Affiliations +

Proceedings Volume 7909, Colloidal Quantum Dots/Nanocrystals for Biomedical Applications VI; 790917 (2011) https://doi.org/10.1117/12.874348
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

We report for the first time continuous flow synthesis of NaYF₄:Yb³⁺/Er³⁺ upconverting nanocrystals in a capillary-based microfluidic reaction system. Two sequential temperature steps were employed for heating with an initial high temperature (180°C) to burst nuclei and a subsequent low temperature (110°C) to promote growth of the nanocrystals in order to obtain high-performance nanocrystals. The prepared nanocrystals emit bright green and red emissions under excitation of 974 nm diode laser. Our research opens the door for the synthesis of upconverting nanocrystals in microfluidic systems.

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Haichun Liu, Ola Jakobsson, Can T. Xu, Haiyan Xie, Thomas Laurell, and Stefan Andersson-Engels "Synthesis of NaYF₄ : Yb³⁺/Er³⁺ upconverting nanocrystals in a capillary-based continuous microfluidic reaction system", Proc. SPIE 7909, Colloidal Quantum Dots/Nanocrystals for Biomedical Applications VI, 790917 (11 February 2011); https://doi.org/10.1117/12.874348

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