| abstract |
Provided are a sialon phosphor particle, a powder, and a method for producing the same, which do not require a strong crushing operation for crushing a sintered body or a large aggregate and show high emission intensity from ultraviolet to blue. General formula, MxLnySi12-(m+n)Al(m+n)OnN16-n (where M is at least one metal selected from the group consisting of Li, Ca, Mg and Y, Ln is a lanthanide metal containing at least Eu) If the valence of the metal M is a and the valence of the lanthanide metal Ln is b, ax+by=m, x is 0<x, y≦2.0, and 0.3≦m<4.5. , 0.5≦n<2.5), and the peak area of the 3d5/2 spectrum of europium and the peak area of the 2p spectrum of Si in the surface analysis by X-ray photoelectron spectroscopy. Is 0.5 or less. |