| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting diode including a light emission component of the long-wavelength side of the visible light range, which uses a fluorescent substance. SOLUTION: The light-emitting diode, which can emit white light by mixing bluish light from a semiconductor light-emitting element, formed of a nitride- based compound semiconductor and light of yellow of a 1st fluorescent material made of an yttrium-aluminum-garnet fluorescent substance activated by cerium which absorbs the bluish light and converts its wavelength is a light-emitting diode, capable of white light emission of high color rendering, for which the 2nd fluorescent substance used together with the 1st fluorescent substance is excited by the light emission wavelength from a semiconductor light-emitting element to emit reddish light. |
