Versatile phosphors BaY₂Si₃O₁₀:RE (RE = Ce , Tb³⁺, Eu³⁺) for light-emitting diodes

Rare-earth-activated BaY₂Si₃O₁₀ (BYSO) phosphors were synthesized via a solid-state reaction. BaY₂Si ₃O₁₀:Ce³⁺ yields an indigo-blue emission peak at 404 nm according to excitation at 334 nm attributed to the Ce³⁺ 4f→5d transition. BaY₂Si₃O₁₀:Tb ³⁺ typically generates green emission peaks resulting from the ⁵D₄→⁷F_j transition. BaY ₂Si₃O₁₀:Eu³⁺ exhibits red emission peaks upon excitation at 393 nm. The quantum efficiency of these phosphors was found to be 53%, 55%, and 63% of commodity. The results in this work demonstrate that these phosphors with new compositions are good candidate luminescent materials for use in plasma display panels and light-emitting diodes, excited from VUV to UV.