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RARE EARTH-ADDED ALKALINE EARTH METAL SILICATE PHOSPHOR AND METHOD FOR PRODUCING THE SAME

2025-06-18 05:254910下载
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PROBLEM TO BE SOLVED : To provide a rare earth-added alkaline earth metal silicate phosphor in which a rare earth Eu is added as an activator, emission wavelength of which exceeds 600 nm, half-value width thereof is small and color purity thereof is favorable; and a production method thereof. SOLUTION : There is disclosed a rare earth-activated alkaline earth metal silicate phosphor in which Eu is added as an activator to a composite oxide whose compositional formula is expressed by formula (1) : [(SraCabMgcEud)2SieO4] (wherein a, b, c, d and e satisfy a+b+c+d=1, and satisfy 0
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