| 摘要 |
To provide a production method of an oxynitride phosphor mainly composed of an ± -sialon, which is a photoluminescent phosphor capable of realizing a highly bright white LED using a blue LED as the light source. A method for producing an ± -sialon-based oxynitride phosphor, wherein a mixed powder blended such that the product is represented by the formula: M x Si 12-(m+n) Al (m+n) O n N 16-n :Ln y (wherein M is at least one metal selected from Li, Ca, Mg, Y and a lanthanide metal excluding La and Ce, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb and Yb), the mixed powder containing an amorphous silicon nitride powder having an loose bulk density of 0.16 to 0.22 g/cm 3 , is fired at 1,400 to 2,000°C in a nitrogen-containing inert gas atmosphere. |
