Facile synthesis of β-NaGdF4:Yb/Er@CaF2 nanoparticles with enhanced upconversion fluorescence and stability via a sequential growth process
Keyword(s):
β-NaGdF4:Yb,Er@CaF2 core–shell nanoparticles: β-NaGdF4:Yb/Er nanoparticles coated with an ultrathin layer of CaF2 have been achieved via a sequential growth process.