FLUORO SULFIDE FLUORESCENT MATERIAL OF RED LIGHT AND GREEN LIGHT AND METHOD OF MANUFACTURING THE SAM

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PROBLEM TO BE SOLVED : To provide a fluorescent substance that has an excellent phototransformation efficiency in an excitation region of ultraviolet or blue light, in which an emission region is wide, and the color saturation of red light and green light is favorable. SOLUTION : The fluoro sulfide based fluorescent material has general formula of (A1-x-yCexBy)SF in which A that is a rare earth metal, and B that is a rare earth metal or a group 13 metal are a trivalent metal ion, and that satisfies a condition of 0

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