(Oxy) nitride phosphor, and white light emitting device including the same

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PURPOSE : An (oxy)nitride phosphor is provided to realize excellent red useful for UV-LED and blue-LED type white light emitting diode and to ensure excellent efficiency.CONSTITUTION : An (oxy)nitride phosphor is the compound represented by the formula : {M_(1-x)Eu_x}_aSi_bO_cN_d, wherein M is the alkaline-earth metal; furthermore x is more than 1 and less than 1; a is more than 1.8 and less than 2.2; b is more than 4.5 and less than 5.5; c is more than or equal to 0 and less than 8; d is more than 0 and less than or equal to 8; c+d is more than 0 and less than or equal to 8.COPYRIGHT KIPO 2011