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PROBLEM TO BE SOLVED : To provide a method for manufacturing a phosphor of silicon oxynitride by using a highly reactive starting material at low temperature and efficiently, and a phosphor having a good fluorescence property by the method of manufacturing.SOLUTION : There is provided a method for manufacturing a red silicon oxynitride phosphor represented by the formula (LMMMN)(MNO), where Mis a tetravalent metal element containing a silicon atom, 0
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