Yellow-green light strongly excitable molybdate red fluorescent material and preparation method thereof

The invention discloses a yellow-green light strongly excitable molybdate red fluorescent material and a preparation method thereof. The yellow-green light strongly excitable molybdate red fluorescent material has a scheelite type tetragonalcrystal structure, and the chemical formula of the material is AY0.5Eu0.5(MoO4)2, wherein A may be Li, Na or K. The light emitting material has the highest excitation strength when the wavelength is 530 to 545 nanometers, and the material belongs to a yellow-green light excitable red fluorescent material. The preparation method is a solid phase method or sol-gel method. The powdered molybdate red fluorescent material is mixed with yellow powder YAG:Ce or combined with the yellow powder YAG:Ce layer by layer, and the fluorescent powder layer and a blue light emitting diode (LED) are packaged by the conventional process to form a warm white LED element. The invention has the advantages that: the preparation process is simple and the technology is mature, so industrial production can be realized easily; and due to the addition of the molybdate red fluorescent material, the red component of the emission spectrum of the white LED element is compensated, the related color temperature is reduced to the lowest level, and the increasing requirements of people on light color quality of white light in solid lighting technology are met.