Spectral-kinetic properties of YF3-CeF3: Eu3+/Tb3+ nanoparticles as possible sensitizers of PDT dyes

Optical properties of crystalline CeF3 -YF3 nanoparticles doped with Eu3+ or Tb3+ ions were studied. The energy transfer coefficients from Ce3+ to the doping ions were estimated. As well as this, conjugation of nanoparticles and dye molecules using polyethyleneimine was tested. The energy transfer from the nanoparticles to dye molecules was studied.