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Phosphor material and light-emitting device

2025-06-18 15:351250下载
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A phosphor material according to an embodiment of the present disclosure contains a major component represented by the formula A2-v-w-x-yBvLnwEuxSmyM2-zDzO8, where A is one or more elements selected from the group consisting of alkaline-earth metal elements; B is one or more elements selected from the group consisting of alkali metal elements; Ln is one or more elements selected from the group consisting of rare-earth elements other than Eu and Sm; M is one or more elements selected from the group consisting of W and Mo; D is one or more elements selected from the group consisting of Nb and Ta; and v, w, x, y, and z satisfy the inequalities 0≦v≦0.5, 0.15≦x+y≦0.7, 0≦y≦0.05, and 0
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