Bright white light through up-conversion of a single NIR source from sol-gel-derived thin film made with Ln3+-doped LaF3 nanoparticles

J Am Chem Soc. 2005 Sep 14;127(36):12464-5. doi: 10.1021/ja052583o.

Abstract

White light was generated from a single silica thin film made with Yb0.75La0.2Eu0.05F3, La0.45Yb0.5Er0.05F3, and La0.75Yb0.2Tm0.05F3 nanoparticles by exciting with a single source near-infrared light (980 nm CW diode laser). Eu3+ and Tm3+ ions are responsible for red and blue emission, respectively. Er3+ ion is responsible for green as well as red emission. The Commission Internationale de l'Eclairage (CIE) coordinates of the resulting light were easily adjusted by controlling the concentration of Ln3+ (Eu3+, Er3+, Tm3+) ions in the nanoparticles as well as the concentration of Ln3+-doped nanoparticles in the sol-gel thin layer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Fluorides / chemistry*
  • Gels / chemistry*
  • Lanthanum / chemistry*
  • Light*
  • Membranes, Artificial*
  • Nanostructures / chemistry*
  • Photochemistry
  • Silicon Dioxide / chemistry
  • Ytterbium / chemistry
  • Zirconium / chemistry

Substances

  • Gels
  • Membranes, Artificial
  • lanthanum trifluoride
  • Lanthanum
  • Silicon Dioxide
  • Zirconium
  • Ytterbium
  • Fluorides
  • zirconium oxide