Cerium-, terbium- and europium-activated CaScAlSiO6 as a full-color emitting phosphor

We reported a single-phased CaScAlSiO6:Ce3+, Tb3+, Eu3+ as a potential full-color emitting phosphor for the application in fluorescent lamps. The CaScAlSiO6:Ce3+, Tb3+, Eu3+ phosphor exhibits three bands under 254 nm excitation: one band situated at 380 nm is attributed to the 5d -> 4f transitions of Ce3+ ions, the second band with sharp lines peaked at 542 nm is assigned to the D-5(4) -> F-7(J) transitions of Tb3+ ions, the third band in the orange-red region (580-700 nm) is originated from D-5(0) -> F-7(J) transitions of Eu3+ ions. The Commission Internationale de I'Eclairage (CIE) chromaticity coordinates (0.30, 0.30) and high color rendering index (CRI=88) can be achieved upon excitation of 254 nm light. It is suggested that CaScAlSiO6:Ce3+, Tb3+, Eu3+ can serve as a potential single-phased full-color emitting phosphor for phosphor-converted fluorescent lamps. (C) 2013 Elsevier B.V. All rights reserved.