Green luminescent materials and their preparing methods

Abstract

Green luminescent materials and their preparing methods. The luminescent materials are the compounds of the following general formula: M3Y1-xTbxSi3O9 or M5Y1-xTbxSi4O12, wherein 0<x≦1 and M is one of Na, K and Li, or wherein Y is replaced by one of Gd, Sc, Lu and La in part or in whole. The luminescent materials are prepared by Sol-Gel method, microwave synthesis or high temperature solid phase method using one of oxide, chloride, nitrite, carbonate or oxalate of Y3+, one of oxide, chloride, nitrate, carbonate and oxalate of Tb3+ and SiO2 as raw materials. The materials of the present invention have high stability, high color purity and high luminous efficiency and the preparing methods are easy to conduct, which have high product quality and low cost, and may be widely used in luminescent materials production.

Dependencies are inferred from the claim text.