SEARCH

SEARCH BY CITATION

Keywords:

  • core–shell nanoparticles;
  • energy transfer;
  • lanthanides;
  • upconversion
Thumbnail image of graphical abstract

Blue emission at NIR excitation: A strategy, based on energy management in nanostructured materials, is reported for photon upconversion of near-infrared light. Several optical processes can be integrated into a single nanoparticle (see picture). The effect offers upconversion emissions spanning from ultraviolet to the visible spectral region by excitation at 808 nm.