Dual-mode luminescence from lanthanide tri-doped NaYF4 nanocrystals

Lili Wang, Huan Chen, Daisheng Zhang, Dan Zhao, Weiping Qin

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

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.

Original languageEnglish
Pages (from-to)504-506
Number of pages3
JournalMaterials Letters
Volume65
Issue number3
DOIs
StatePublished - 15 Feb 2011
Externally publishedYes

Keywords

  • Luminescence
  • Nanoparticles
  • Rare earth

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