Invention Grant
US09202991B2 Fluorescent material of light-emitting diode and method for preparing the same 有权
发光二极管的荧光材料及其制备方法

Fluorescent material of light-emitting diode and method for preparing the same
Abstract:
The present invention relates to an inorganic nitride-based fluorescent material, comprising an inorganic fluorescent host material represented by the following formula (I): (M)xSiyNz:At  (I) wherein, M is at least one metal selected from the group consisting of metals of IIA and IIIA, and x is from 1.0 to 3.0, and y is from 0.7 to 6.0, and z is from 1.0 to 9.0 and At is an activator; and a surface coating material is at least one metal oxide, metal hydroxide or metal carbonate, and the metal of the metal oxide, the metal hydroxide or the metal carbonate is selected from the group consisting of Mg, Ca, Sr, Ba, V, Cr, Mn, Fe, Co, Ni, Cu, La, Ga, In, Sn, Sb and Bi.
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