Introduction Rare-earth doped upconversion(UC)phosphors,which can convert a low energy photon into a high energy photon through two-or multi-photon processes[1]
Fluorescent carbon nanodots(CDs),a young smart member of the carbon nanomaterial family,were first obtained during purification of single-walled carbon nano
Carbon dots(CDs),as a new member of carbon nanomaterials family,are attracting increasing interest because they posses evident benefits,such as aqueous solu