CHLOROSILICATE PHOSPHOR AND PREPARING METHOD OF THE SAME

文件类型：PDF文档
文件大小：3286K
The present invention relates to a chlorosilicate based fluorescent body containing rare-earth metals and a production method of the same, and specifically, to a chlorosilicate based fluorescent body containing rare-earth metals having an effect of emitting light in long wavelengths using large ion radius of chlorine elements, and a production method of the same. The production method comprises the following steps : obtaining a metal salt-SiO2 sol mixture solution by mixing a metal salt mixture solution containing metal chloride for synthesizing the chlorosilicate based fluorescent body containing the rare-earth metals with SiO2 sol in a liquid phase; impregnating the metal salt-SiO2 sol mixture solution in a polymer material before drying the mixture; and performing low temperature calcination, pre-oxidation burning, and post-reduction burning processes to obtain the chlorosilicate based fluorescent body.[Reference numerals] (AA) Metal solution, water-soluble silicon compound(WSS); (BB) Immersion(cellulose); (CC) Stirring, grinding, and drying under ultrasound; (DD) First sintering(150-400°C, air); (EE) Second sintering(500-1000°C, air); (FF) 700-1400°C, sintering under reduction; (GG) Fluorescent bodyCOPYRIGHT KIPO 2014