Sol–gel synthesis and optical improvement of novel red-emitting [LiY(1−x)Eux][MoyW(1−y)O4]2 powder for white LED applications

In this work, we report on sol–gel synthesis of red-emitting LiY_0.88Eu_0.12] Mo_0.1W_0.9O₄]₂ phosphor and its luminescent properties at room temperature. X-ray diffraction patterns indicate that it presents one main phase with a tetragonal (space group I4₁/a (88)) structure. Luminescent spectra show that the main emission peaks lies at 613.2 nm and 616.2 nm deriving from ⁵D₀→⁷F₂ transition peak splitting due to Mo⁶⁺ and W⁶⁺ concentration waving in the host. All those exhibit the excellent prospect in light emitting diodes application in the future.