Effect of partially replacement of Gd3+ ions on fluorescence properties of YBO3:Eu3+ phosphor synthesized via precipitation method

The series of (Y1-xGdx)BO3:Eu-0.01(3+) phosphors was successfully synthesized by precipitation method. All phosphors were characterized by X-ray diffraction pattern (XRD) for crystalline structure and UV-vis, photoluminescence (PL) and decay curves measurements were carried out to characterize their optical properties. The PL emission spectra of (Y(l-x)Gdx)BO3:Eu-0.01(3+) phosphors indicated that red-orange (595 nm) color could be well excited by 233 nm. The effect of x (Gd3+ ions) increases in (Y(1-x)Gdx)BO3:Eu-0.01(3+) on PL properties has been examined. The results showed that increment of x molar concentration in (Y(1-x)Gdx)BO3:Eu-0.01(3+) would lead to a outstanding enhancement of fluorescence intensity. The chromaticity coordinates (CIE) were calculated. The R/O ratio of the luminescence intensity of D-5(0) -> F-7(2) (red) to D-5(0) -> F-7(1) (orange) transitions were very well increases with the increasing percentage of Gd3+ ions in (Y(1-x)Gdx)BO3:Eu-0.01(3+) phosphor. (C) 2014 Elsevier B.V. All rights reserved.