Sherman and Shalloway
Fluorescent substance and manufacturing method thereof
 A fluorescent substance of which main component is comprised from 32 mol % to 35 mol % of silicon element and from 68 mol % to 65 mol % of oxygen element, and in which includes from 10 ppm to 1 wt % of silicon carbide and silicon nitride as an activator. And, a manufacturing method of the fluorescent substance by hydrolyzing silicon alkoxide by using alkali or acid catalyzer under the presence of carbon, and by heat treating the obtained precursor at the temperature of 500.degree. C. to 900.degree. C. 
Toso Company, Ltd. Research Development Company of Japan
C C
C09K C09K
inventional inventional
Nobusuke Masahito
Yamada Sano