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Journal of Fluorescence

, Volume 16, Issue 3, pp 461–468 | Cite as

Er, Yb Doped Yttrium Based Nanosized Phosphors: Particle Size, “Host Lattice” and Doping Ion Concentration Effects on Upconversion Efficiency

  • Ana Maria Pires
  • Stephan Heer
  • Hans Ulrich Güdel
  • Osvaldo Antonio SerraEmail author
Original Paper

Abstract

The upconverter phosphors studied herein have different percentages of Er3+ and Yb3+ as doping ions in different Y3+ matrixes (Y2O3, Y2O2S), and were prepared from different precursors (polymeric resin, oxalate, basic carbonate) and method (combustion). Upconversion emission spectra were recorded at 298 K for all the doped samples in the visible region, for efficiency and Green/Red emission relative intensity comparisons. Therefore, an investigation of the influence of the doping ion concentration, particle size and host lattice on the upconversion process is provided in view of the UPT (Upconverting phosphor technology application). On the basis of the results, it was possible to evaluate the best combination for a specific assay, considering whether it is advantageous to have the greatest contribution from the green or red emissions, or from both in comparable intensities.

Keywords

Upconversion Rare earth Phosphor UPT Nanoparticles. 

Notes

Acknowledgments

AMP and OAS are grateful to FAPESP for financial support.

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Ana Maria Pires
    • 1
  • Stephan Heer
    • 2
  • Hans Ulrich Güdel
    • 2
  • Osvaldo Antonio Serra
    • 1
    Email author
  1. 1.Departamento de Química, FFCLRPUniversidade de São PauloRibeirão PretoBrazil
  2. 2.Department of Chemistry and BiochemistryUniversity of BernBerneSwitzerland

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