BLUE-GREEN SILICATE LUMINESCENT MATERIALS

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The present invention provide blue-green silicate luminescent materials, which are rare earth activated alkaline-earth metals silicates having a formula of Ba1-bMbSi2O(5-a/2)Da : Eux, Lny, wherein M is one or two elements selected from the group consisting of Mg, Ca and Sr; D is one or two ions selected from the group consisting of Cl- and F-; Ln is an ion selected from Ce, Er, Pr or Mn; a, b, x, and y are molar coefficients and within following ranges : 0≤a<2, 0≤b<0.5, 0

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