| abstract |
PROBLEM TO BE SOLVED: To provide a sialon-based phosphor that can be mixed with a resin to form a thin film and has uniform fluorescence and high emission intensity, and a sialon-based phosphor that does not have too large agglomerated particles and does not have a wide particle size distribution. A method of manufacturing is provided. SOLUTION: General formula, M x Ln y Si 12- (m + n) Al (m + n) O n N 16-n (However, M is at least one metal of Ca, Mg, Y, and Li, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb, Yb, and Ce. Assuming that the valence is a and the valence of the lanthanide metal Ln is b, ax + by = m, x is 0 <x ≦ 1.5, 0.3 ≦ m <4.5, 0 <n <2. 25) In the method for producing an α-sialon-based phosphor represented by the formula (1), a silicon nitride raw material comprising amorphous silicon nitride and crystalline silicon nitride is used as the silicon nitride raw material. [Selection] Figure 1 |