Synthesis, fabrication, and photoluminescence of CaF2 doped with rare earth ions

Ambient condition wet synthetic techniques were used to synthesize CaF2 dop ed with europium and erbium. Photoluminescence spectroscopy and energy-disp ersive x-ray analyses were used to study the electronic states of rare eart h (RE) ions and the degree of heterogeneity/homogeneity in the matrix. Rama n spectroscopy was used to study the degree of crystallinity of CaF2. Effec ts on the photoluminescence spectra were studied as a function of the therm al treatment of CaF2 samples.