| abstract |
The present invention provides a phosphor having improved brightness over a conventional? -Type sialon phosphor. In the present invention, a phosphor having improved brightness of the phosphor is provided by containing Al, O (oxygen), and Eu at a specific concentration in the? -Type sialon phosphor after the production. That is, a? -Sialon phosphor containing Si, Al, O, N and Eu is characterized in that the Al concentration in the phosphor is 0.80 mass% or more and 2.25 mass% or less and the O concentration is 0.36 mass% or more and 1.15 mass% (Al / O) of 2.0 to 3.0 when the concentration of Al is 0.40 mass% or more and 0.80 mass% or less. |