“…Examples include alkaline-halides (e.g., LiF: Mg, Ti; LiF: Mg, Cu, P), sulphates (e.g., BaSO 4 : Eu, CaSO 4 : Dy), borates (e.g., MgB 4 O 7 : Dy), oxides (e.g., Al 2 O 3 , ZnO, ZrO 2 , MgO), and complex compounds (e.g., K 3 Na(SO 4 ) 2 : Eu, Ba 0,97 Ca 0,03 SO 4 : Eu, YAG etc.) [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ].…”