| abstract |
The present invention proposes a method for producing a β-SiAlON phosphor, capable of adjusting the β-SiAlON phosphor to have high luminance and desired particle size characteristics. According to the present invention, a method is provided for producing a β-SiAlON phosphor having a chemical formula expressed as Si (6-x) Al x O y N (6-y) :Ln z , where Ln is a rare earth element, 0<x≤4.2, 0<y≤4.2, and 0<z≤1.0, including mixing a base raw material comprising a silicon material containing metallic silicon, and an aluminum material containing at least one of either a metallic aluminum or an aluminum compound, and an activator raw material for activating a base to produce a raw material mixture, and heating the raw material mixture in the presence of nitrogen-containing atmospheric gas to produce a phosphor. |