PHOSPHOR, LIGHT-EMITTING DEVICE USING SAME, ILLUMINATION LIGHT SOURCE, AND ILLUMINATION DEVICE

摘要

The phosphor has a broad excitation band provided by Ce 3+ in an excitation spectrum. The excitation band has a peak in a range between 400 nm and 470 nm inclusive. The phosphor has, as an emission spectrum, a broad emission component provided by Ce 3+ which has an emission peak wavelength of 510 nm or more to less than 570 nm and a linear emission component provided by Tb 3+ which has an emission peak wavelength of 535 nm or more to less than 560 nm. The intensity of the emission spectrum shows the maximum at the wavelength of the linear emission component provided by Tb 3+ .