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PHOSPHOR AND LIGHT-EMITTING DEVICE

2025-06-21 22:052000下载
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PROBLEM TO BE SOLVED : To provide a phosphor that emits a light whose emission spectrum has a peak wavelength closer to the wavelength where luminosity becomes maximum. SOLUTION : The phosphor is represented by formula : (M2x, M3y, M4z)mM1O3X(2/n) (wherein M1 is at least one element including at least Si selected from the group consisting of Si, Ge, Ti, Zr and Sn; M2 is at least one element including at least Ca selected from the group consisting of Ca, Mg, Ba and Zn; M3 is at least one element including at least Sr selected from the group consisting of Sr, Mg, Ba and Zn; X is at least one halogen element; M4 is at least one element including at least Eu2+ selected from the group consisting of rare earth elements and Mn; 6/6≤m≤8/6; 5≤n≤7; and x, y and z are each a number satisfying equations, x+y+z=1, 0
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