Low temperature photoluminescence study of Ce3+ and Eu2+ ions doped SrF2 nanocrystals

The photoluminescence properties of Eu2+ and Ce3+ doped SrF2 have been reported at room temperature and 77 K. The emission spectra of Eu2+ ions in SrF2 consisted of a broad band assigned to the 5d-4f transition of the Eu2+ ion. Ce3+ ions in SrF2 showed a weak emission intensity. The emission intensity of Eu2+ ion was greatly enhanced at 77 K. At room temperature and 77 K, the fluorescence decay of Eu2+ and Ce3+ ions in SrF2 have been measured and the fluorescence decay curve have been reported.