Rare-earth luminescent materials prepared by hydrothermal method and their luminous intensity

Eu³⁺ doped CaF₂, SrF₂ and BaF₂ have been prepared by hydrothermal method successfully, which is presented in this paper. Rare-earth doped CaF₂, SrF₂ and BaF₂, whose luminous ability is the strongest, have been explored when their concentration is the same. It concludes that the luminous ability of Eu³⁺ doped CaF₂ is the strongest of them. Besides, luminous intensity of Eu³⁺ doped CaF₂ in different concentration has been explored with fluorometer. The result is that luminous intensity of Eu³⁺ doped CaF₂ becomes stronger with the increasing of its concentration.