| abstract |
The present invention is to provide a chemically stable inorganic phosphor having the characteristic of emitting high-luminance orange or red light and to provide an illumination device of excellent rendering properties and a high-durability luminescent device for an image display device by using the phosphor. A basic phosphor is obtained by using a crystal represented by A2Si5-xAlxOxN8-x (wherein A is a combination of at least one element selected from Mg, Ca, Sr, and Ba; and x has a value of 0.05 to 0.8) as an active substance and solid dissolving a metallic element M (wherein M is one or more elements selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) in the active substance. |