| abstract |
Providing a chemically stable inorganic phosphor having high luminance orange or red light emission characteristics, and using this phosphor, an luminaire having excellent color rendering properties and image display with excellent durability It provides a light emitting mechanism of the device.n n n A 2 Si 5-x Al x O x N 8-x (where A is a mixture of one or two or more elements selected from Mg, Ca, Sr, or Ba, and x is 0.05 or more and 0.8 or less) A crystal represented by a value) is used as an active substance, whereby the metal element M (wherein M is one selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb). Or a solid solution of two or more elements) to provide a basic phosphor. |