Synthesis of Green-Emitting Phosphor Y3Al5O12: Tb, Ce, Gd by Sol-Gel Method
Green-emitting Y3Al5O12: Tb phosphor materials have been widely studied because of their high luminescence efficiency and stability under the conditions of high irradiance with an electron beam. In this paper, Green-emitting phosphor of yttrium aluminum garnet (Y3Al5O12 or YAG) doped with Tb3+, Ce3+ and Gd3+ was synthesized by sol-gel method. By means of TG/DSC, XRD, and photoluminescence (PL) performance, the sintering condition and its influence on the powder’s emitting performance were studied. The experimental results showed that, Y2.8Tb0.12 Ce0.08-x GdxAl5O12 synthesized by sol-gel method was a kind of phosphor of good performance. When the value of x was set at 0.04, the best emitting performance was obtained. The Y3Al5O12: Tb, Ce, Gd particles had fine size, spherical shape, filled morphology, high crystallinity, and good brightness.
Wei Pan and Jianghong Gong
L. M. Dong, Z. D. Han, Z. Wu, X. Y. Zhang, "Synthesis of Green-Emitting Phosphor Y3Al5O12: Tb, Ce, Gd by Sol-Gel Method", Key Engineering Materials, Vols. 336-338, pp. 610-612, 2007