LIGHT-EMITTING MATERIAL AND METHOD FOR PREPARING THE SAME,申请号JP2000000402-传众专利搜索

LIGHT-EMITTING MATERIAL AND METHOD FOR PREPARING THE SAME

申请公布号：WO2000044852(P1)

申请号：JP2000000402

申请日期：2000.01.27

申请公布日期：2000.08.03

摘要：<p>A light-emitting material, characterized as comprising a crystalline of a dual phase compound represented by the formula: (Sr,Eu,Dy)0.95±X(Al,B)2O3.95±X.(Sr,Eu,Dy)4-X(Al,B)14O25-X, wherein X=0.01 to 0.1, with the proviso that the content of B element is 0.2 to 1.0 wt. %, the content of Eu element is 0.5 to 3.0 wt. % and the content of Dy element is 0.1 to 3.0 wt. %; and a method for preparing the light-emitting material which comprises the steps of (1) weighing respective raw materials previously pulverized, followed by mixing to provide a mixed material, (2) charging the mixed material into a vessel, heating it to a temperature of 850° C to 120° C in 3 hr under a reducing condition and maintaining it at the temperature for 5 to 6 hr, to thereby provide a sintered product, (3) stopping heating, followed by allowing the sintered product to stand for cooling to room temperature and (4) pulverizing the sintered product to give a desired final product, wherein, in the step (2), reduction is carried out by use of carbon powder.</p>