| abstract |
An oxynitride phosphor having an external quantum efficiency higher than that of a conventional oxynitride phosphor having a fluorescence peak wavelength of 587 to 630 nm is provided. The present invention comprises an oxynitride phosphor fired product containing Ca-containing α-sialon as a main component, further containing 50 to 10,000 ppm of Li, and having a surface Li content of 50% or more. It relates to body powder. [Selection] Figure 1 |