Synthesis and luminescent performances of some europium activated yttrium oxide based systems

Phosphors based on solid solutions of Y ₂O ₃–La ₂O ₃–Gd ₂O ₃ and Y ₂O ₂S–La ₂O ₂S–Gd ₂O ₂S and YVO ₄–GdVO ₄ doped by Eu ³⁺ were synthesized by different methods. The influence of a matrix composition and an activator concentration on phosphor’s light-emitting performances is described in order to propose the optimized synthesis conditions. Europium-doped yttrium, lanthanum and gadolinium oxysulphides phosphors show higher CL-efficiency at low applied voltages than oxides ones. The presented results confirm that europium doped solid solutions of Y–Gd–La oxides, oxysulphides and vanadates are perspective for PL and CL application in the display manufacture.