Quenching effect of co-dopant Pr3+ on red emitting yttrium vanadate phosphor doped with Eu(III).

Y1-xVO4: Eux-y3+: Pry3+ with x = 6 mole % and y = 0, 2, 3 ,4, 5, 6, mole % phosphors have been prepared by solid state reaction. The dopant Eu3+ concentration was optimized along with the co-dopant Pr3+ concentration in the yttrium vanadate host lattice with the help of photoluminescence (PL) spectra. The phosphors have displayed red color under UV source. Pr3+ acts as quencher and quenching effect of co-dopant Pr3+ on Red Emitting Yttrium Vanadate Phosphor Doped with Eu(III) using luminescence Studies on Y1-XVO4: Eux-y3+ : Pry3+ 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. [ABSTRACT FROM AUTHOR]