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Phosphor and light emitting device

2025-06-17 20:394910下载
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The present invention relates to a complex oxynitride phosphor which is efficiently excited in the UV to near-UV wavelength region and emits green to yellow light, and a light emitting device using the phosphor. The phosphor according to the present invention is characterized in that it is represented by general formula : M1aM2bRecSidOeNf; wherein M1 is one or more elements selected from Y, Sc, La, and Al; M2 is one or more elements selected from Zn, Sr, Ba, Ca, and Mg; Re is one or more elements selected from Ce, Pr, Sm, Eu, Dy, Ho, Er, Tm, Yb, Ti, Cr, and Mn among rare-earth elements and transition metal elements; and a, b, c, d, e, and fin the formula satisfy the relationships : [in-line-formulae]a+b+c=1, [/in-line-formulae][in-line-formulae]0.20
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