| abstract |
Provided is a green phosphor having a high green luminance from a conventional rare earth sialon phosphor and having higher durability than a conventional oxide phosphor. Eu is dissolved in a crystal of a nitride or oxynitride having a β-type Si 3 N 4 crystal structure, and the irradiation with the excitation source is successful in obtaining a phosphor emitting a fluorescence having a peak in a wavelength in the range of 500 nm to 600 nm. It was. |