The structure of fluoride nanocrystals are in the main phase calcium fluoride (CaF2) nanocrystals. The red emission of Er3þ ions in the glass ceramics can be promoted due to the ET processes between Yb3þ and Er3þ ions.
The structure of fluoride nanocrystalsare in the main phase calcium fluoride (CaF2) nanocrystals.The red emission of Er3þ ions in the glass ceramics canbe promoted due to the ET processes between Yb3þ and Er3þ ions.