Quenching effect of co-dopant Pr~(3+) on red emitting yttrium vanadate phosphor doped with Eu(III)

摘要

Y_(1-x)VO_4: Eu_(x-y)~(3+): Pr_y~(3+) with x = 6 mole % and y = 0, 2, 3, 4, 5, 6, mole % phosphors have been prepared by solid state reaction. The dopant Eu~(3+) concentration was optimized along with the co-dopant Pr~(3+) concentration in the yttrium vanadate host lattice with the help of photoluminescence (PL) spectra. The phosphors have displayed red color under UV source. Pr~(3+) acts as quencher and quenching effect of co-dopant Pr~(3+) on Red Emitting Yttrium Vanadate Phosphor Doped with Eu(III) using luminescence Studies on Y_(1-X)VO_4: Eu_(x-y)~(3+) : Pr_y~(3+) systems are presented in detail in this paper. The emission intensities were determined and the relative fluorescence intensities have been estimated. The richness of the red color is verified by determining the chromaticity coordinates (X, Y) from the CIE standard charts.