Luminescence properties of Eu2+-doped BaSi2O5 as an efficient green phosphor for light-emitting devices and wide color gamut field emission displays

Abstract

A series of Eu²⁺ doped BaSi₂O₅ phosphors were prepared using a traditional high temperature solid state reaction method. The structure, morphology, photoluminescence and cathodoluminescence properties as well as the thermal quenching properties were investigated in detail. A green emission band centered at about 500 nm can be obtained. The phosphors exhibit high current saturation and high resistance under low voltage electron bombardment. The chromaticity coordinates reveal that the phosphors can evidently enlarge the gamut compared with commercial tricolor phosphors. The results show that BaSi₂O₅:Eu²⁺ could be a potential candidate for both white light emitting diodes and field emission displays.