Luminescence study of LiY1-xEux(MoO4)2

The luminescence spectra of LiY1-xEux(MoO4)(2) (x = 0.0005, 0.001, 0.01, 0.05, 0.1, 0.5, 1) scheelite solid solutions are measured under laser excitation at 337.1 nm. The effect of Eu3+ concentration on the luminescence behavior of the solid solutions is examined. The highest integrated emission intensity is offered by LiY0.Eu-5(0.5)(MoO4)(2). Eu3+ substitution for Y3+ has no effect on the symmetry of the emission centers involved. Eu3+, is shown to occupy only one site in the structure of the solid solutions. X-ray diffraction and luminescence data indicate that all of the solid solutions have an undistorted scheelite structure.