BARIUM ALUMINATE-BASED FLUORESCENT MATERIAL AND PREPARATION METHOD THEREOF

摘要

PURPOSE: A barium aluminate-based fluorescent material and its preparation method are provided, which is improved in the luminous brightness under UV and VUV (vacuum UV) and is suitable for a lamp and PDP. CONSTITUTION: The barium aluminate-based fluorescent material is represented by the formula 1, wherein 0.5x1.5, 0y0.4, and 0z0.4. The color of the barium aluminate-based fluorescent material is blue when 0.5x1.5, y=0, and 0.02z0.4, and green when 0.5x1.5, 0.05y0.4, and z=0, or when 0.5x1.5, 0.005y0.4, and 0.05z 0.4. The method comprises the steps of dissolving the precursors of a fluorescent material, an activating material and a lubricant to make a precursor solution; and sintering the precursor solution under the reductive condition of hydrogen gas at 1,200-1,400 deg.C. Preferably the precursors are Ba(NO3)2, Al(NO3)3, Mn(NO3)2 and Eu(NO3)3.