OXYNITRIDE PHOSPHOR POWDER, SILICON NITRIDE POWDER FOR PRODUCTION OF OXYNITRIDE PHOSPHOR POWDER, AND PRODUCTION METHOD OF OXYNITRIDE PHOSPHOR POWDER

摘要

An oxynitride phosphor powder contains α-SiAlON and aluminum nitride, obtained by mixing a silicon source, an aluminum source, a calcium source, and a europium source to produce a composition represented by a compositional formula: Ca_x1Eu_x2Si_12-(y+z)Al_(y+z)O_zN_16-z (wherein x1, x2, y and z are 0x1≦3.40, 0.05≦x2≦0.20, 4.0≦y≦7.0, and 0≦z≦1), and firing the mixture.