专利详情

专利名称	Yellow light afterglow material and preparation method thereof as well as LED illuminating device using same
申请号	US200913497129	专利类型	US
公开（公告）号	US9045689(B2)	公开（授权）日	2015.06.02
申请（专利权）人	中国科学院长春应用化学研究所	发明（设计）人	Zhang Hongjie;Zhang Ming;Li Chengyu;Zhao Kun;Zhang Hao
主分类号	C09K11/80	IPC主分类号	C09K11/80;H01L33/00;C09K11/77;H01L33/50
专利有效期	Yellow light afterglow material and preparation method thereof as well as LED illuminating device using same 至Yellow light afterglow material and preparation method thereof as well as LED illuminating device using same	法律状态
说明书摘要	The invention relates to a yellow light afterglow material and a preparation method thereof as well as an LED illuminating device using the same. The yellow light afterglow material comprises the chemical formula of aY2O3.bAl2O3.cSiO2:mCe.nB.xNa.yP, where a, b, c, m, n, x and y are coefficients, and a is not less than 1 but not more than 2, b is not less than 2 but not more than 3, c is not less than 0.001 but not more than 1, m is not less than 0.0001 but not more than 0.6, n is not less than 0.0001 but not more than 0.5, x is not less than 0.0001 but not more than 0.2, and y is not less than 0.0001 but not more than 0.5; wherein Y, Al and Si are substrate elements, and Ce, B, Na and P are activators. The yellow light afterglow material is prepared by the following steps: weighing oxides of elements or materials which can generate oxides at high temperature by molar ratio as raw materials, evenly mixing and then sintering the raw materials at 1200-1700° in a reducing atmosphere.