Dependency of luminescence properties of Y2O3: Eu on the activator incorporation degree and lattice parameter

Abstract— Samples of yttrium oxide doped with trivalent europium have been prepared by ceramic techniques, under different synthesis conditions; barium chloride (BaCl₂) and sodium tetraborate (Na₂B₄O₇) were tested as flux. The improvement of the luminescence properties dependency on the substitution of Eu³⁺ for Y³⁺ in the host lattice under electron and UV excitations is demonstrated. The lattice parameter as a quantitative assessment of activator incorporation degree is proposed. The obtained results are discussed with respect to the employed processing method.