NITRIDE PHOSPHOR AND METHOD OF PRODUCING THE SAME

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PROBLEM TO BE SOLVED : To provide a nitride phosphor in which brightness, internal quantum efficiency, and external quantum efficiency are more improved than those of a conventional product. SOLUTION : The nitride phosphor is represented by general formula (1) : LnxSiyNn : Z, and is characterized in that the infrared absorption spectrum, measured by the diffuse reflection method with at least a 2 cm-1 or lower measurement interval, satisfies prescribed conditions. In the general formula (1), Ln is a rare earth element excluding elements used as activators, Z is an activator, x satisfies 2.7≤x≤3.3, y satisfies 5.4≤y≤6.6, and n satisfies 10≤n≤12. COPYRIGHT : (C)2013, JPO&INPIT