Two-color upconversion in rare-earth-ion-doped ZrO2 nanocrystals

DOI PDF 3 Citations
  • G. Y. Chen
    Harbin Institute of Technology Department of Physics, , 150001 Harbin, People’s Republic of China
  • Y. G. Zhang
    Harbin Institute of Technology Department of Physics, , 150001 Harbin, People’s Republic of China
  • G. Somesfalean
    Harbin Institute of Technology Department of Physics, , 150001 Harbin, People’s Republic of China
  • Z. G. Zhang
    Harbin Institute of Technology Department of Physics, , 150001 Harbin, People’s Republic of China
  • Q. Sun
    Harbin Institute of Technology Department of Chemistry, , 150001 Harbin, People’s Republic of China
  • F. P. Wang
    Harbin Institute of Technology Department of Chemistry, , 150001 Harbin, People’s Republic of China

Bibliographic Information

Published
2006-10-16
DOI
  • 10.1063/1.2363146
Publisher
AIP Publishing

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<jats:p>To develop fluorescent labels for multicolor imaging, rare-earth-ion-doped ZrO2 nanocrystals were prepared by a complex precursor method. Laser excitation of 976nm induced single fluorescent bands of green and red upconversion (UC) in ZrO2:Er3+ and ZrO2:Er3++Yb3+ nanocrystals, respectively. A suppression ratio (SR) parameter was introduced, defined as the UC intensity ratio of the main band to all the other detected impurity bands, and SR values in the order of 10–100 were experimentally obtained, demonstrating the excellent monochromaticity of the UC labels. Thus, the two-color UC labels obtained are potentially ideal to be used for biological multicolor imaging.</jats:p>

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