YELLOW LIGHT AFTERGLOW MATERIAL AND PREPARATION METHOD THEREOF AS WELL AS LED ILLUMINATING DEVICE USING SAME

摘要

A yellow-light afterglow material, a manufacturing method thereof and an LED luminescence device using the same are provided. The yellow-light afterglow material is comprised of aY2O3·bAl2O3·cSiO2:mCe·nB·xNa·yP, a, b, c, m, n, x, y are coefficients, 1=a=2, 2=b=3, 0.001=c=1, 0.0001=m=0.6, 0.0001=n=0.5, 0.0001=x=0.2, 0.0001=y=0.5, in which Y, Al, Si are host elements, Ce, B, Na, P are activators. The manufacturing method is that according to the mol ratio, the oxides of the elements or the substances which can produce the oxides when heated at high temperature are weighted as raw material, then mixed uniformly and sintered at 1200?~1700? at reducing atmosphere, thereby the yellow-light afterglow material is obtained.