Preparation and fluorescence properties of color tunable phosphors Ca3Y2(Si3O9)2:Dy3+†
Abstract
A novel reddish-orange phosphor, Ca3Y2−2x(Si3O9)2:2xDy3+, was synthesized via conventional solid-state reaction. Its photoluminescence properties were investigated. With increasing Dy3+ concentration, the luminescence intensity first increases, reaches the greatest, and then decreases. The concentration quenching mechanism is based on the electric dipole–dipole interaction. The decay times were also determined.