| http://www.w3.org/ns/prov#value | - In the ??-sialon phosphor according to the second form of implementation of the present invention, it does not matter if there is a residue of the raw materials that may in part remain unreacted or a fluorine containing residue insofar as the ??-sialon is the main component, but the addition of fluorine in an amount more than necessary is undesirable in the aspect of light emission efficiency.
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