Fluorescent body powder, fluorescent body resin composition, fluorescent body, light-emitting element, and light-emitting device

A phosphor powder having a ratio (I450/I330-360) of fluorescence intensity (I450) with respect to excitation light having a wavelength of 450 nm and maximum fluorescence intensity (I330-360) with respect to excitation light having a wavelength of 330 nm or more and 360 nm or less of 0.93 or more,

• in an excitation spectrum showing fluorescence intensity of a maximum fluorescence wavelength λmax, provided that the maximum fluorescence wavelength λmax is a fluorescence wavelength that provides maximum fluorescence intensity with respect to an excitation light having a wavelength of 450 nm.

A phosphor powder having a ratio (I450/I500) of fluorescence intensity (I450) with respect to excitation light having a wavelength of 450 nm and fluorescence intensity (I500) with respect to excitation light having a wavelength of 500 nm of 1.4 or more and 2.2 or less,

• in an excitation spectrum showing fluorescence intensity of a maximum fluorescence wavelength λmax, provided that the maximum fluorescence wavelength λmax is a fluorescence wavelength that provides maximum fluorescence intensity with respect to an excitation light having a wavelength of 450 nm.

A phosphor powder having a ratio (I380-420/I250) of maximum fluorescence intensity (I380-420) with respect to excitation light having a wavelength of 380 nm or more and 420 nm or less and fluorescence intensity (I250) with respect to excitation light having a wavelength of 250 nm of 2.7 or more,

• in an excitation spectrum showing fluorescence intensity of a maximum fluorescence wavelength λmax, provided that the maximum fluorescence wavelength λmax is a fluorescence wavelength that provides maximum fluorescence intensity with respect to an excitation light having a wavelength of 450 nm.