Patent ID: 11952520
Assignee: DENKA COMPANY LIMITED
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H | IPC C

Claim 5:
6. A phosphor powder comprising
an inorganic compound in which Eu as an activator is solid-soluted in a crystal represented by Ba26Si51O2N84 or in an inorganic crystal having the same crystal structure as the crystal represented by Ba26Si51O2N84,
wherein in an emission spectrum obtained by irradiating the phosphor powder with excitation light having a wavelength of 450 nm, when a luminescence intensity at a peak wavelength in a range of equal to or more than 700 nm and equal to or less than 1500 nm is P0, and when a luminescence intensity at a peak wavelength of equal to or more than 500 nm and less than 700 nm is P1, P1/P0≤0.20 and P0≥0.88 are satisfied by P0 and P1.