| 摘要 |
According to one embodiment, a luminescent material includes luminescent material particles having a composition represented by formula A. (Mg1-w,AEw)a(Ge1-x,Snx)bOc,Cld:zMn A where AE is at least one selected from Ca and Sr, and 3.5≰a≰4.4, 0.8≰b≰1.1, 5.5≰c≰7.0, 0<d≰0.41, 0<w≰0.05, 0<x≰0.10, and 0<z≰0.03.
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