In this work the emission efficiencies of F3+and F2centers as a function of their concentration have been investigated in LiF crystals colored at RT with 5 MeV electrons. From a careful investigation of their absorption and emission spectra at 80 K and RT, we evaluated that the emission efficiencies η of both F3+and F2defects are constant up to ∼ 1016centers/cm3. When increasing the concentration up to 2 × 1018centers/cm3, η decreases slightly for the F2centers and considerably more, down to a factor of 100 at the maximum concentration, for the F3+ones. The same results have been obtained at 80 K for the F2centers, while the concentration quenching of F3+centers is 10 times less intense with respect to RT.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Condensed Matter Physics