Synthesis and photoluminescence properties in white light-emitting diodes of oxynitride green phosphor Ba3Si6O12N2

Abstract

Utilizing boron-coated Eu₂O₃, highly effective Ba₃Si₆O₁₂N₂ green-emitting phosphors were made using a gas reduction nitridation technique under flowing NH₃ gas. We found that the synthesized phosphor is a pure phase of Ba₃Si₆O₁₂N₂ based on X-ray diffraction patterns. By modifying an alumina boat crystallized, the Ba₃Si₆O₁₂N₂ green-emitting phosphors from the result were considerably better and had higher emission intensity. Under stimulation at 405 nm, the radiation spectra revealed a typical wide green radiation band attributable to the 4f⁶5d → 4f⁷ electronic transfer of Eu²⁺ ions. Generally, the green-emitting Ba₃Si₆O₁₂N₂ phosphors that were created by that method with boron-coated Eu₂O₃ is a potential phosphor-transformed diodes which emit white illumination white light emitting diodes(pc-WLEDs') element.