Preparation and luminescence properties of Eu2+doped γ-aluminum oxynitride transparent ceramics

Eu2+ doped γ-AlON transparent ceramics have been prepared by the solid-state reaction sintering method. The influences of Eu concentration on both strength, transparency and luminescence properties of the as-prepared samples were discussed. The strength and transparency decreased as Eu content increased. Two bands were observed in the emission spectrum of each sample. One (B1) was narrow and centered at around 401 nm, the other (B2) was comparatively broader, and the location of its center as well as the intensity ratio of peak values of B2 to that of B1 varied with Eu content.