J Am Chem Soc. 2008 Apr 30;130(17):5642-3. Epub 2008 Apr 5.

Upconversion multicolor fine-tuning: visible to near-infrared emission from lanthanide-doped NaYF4 nanoparticles.

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Department of Chemistry, National University of Singapore, Singapore 117543.

Abstract

A general approach to fine-tuning the upconversion emission colors, based upon a single host source of NaYF4 nanoparticles doped with Yb3+, Tm3+, and Er3+, is presented. The emission intensity balance can be precisely controlled using different host-activator systems and dopant concentrations. The approach allows access to a wide range of luminescence emission from visible to near-infrared by single-wavelength excitation.

PMID:: 18393419; [PubMed - indexed for MEDLINE]

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