| abstract |
Disclosed is a light-emitting device (1) which is highly efficient even in a region where the color temperature is low, excellent in long-time reliability, and has improved color rendering properties. Also disclosed is an illuminating device using such a light-emitting device. A phosphor (7) is obtained by mixing a first fluorescent substance emitting yellow-green, yellow or yellow-red light and a second fluorescent substance having a longer main emission wavelength than the first fluorescent substance and emitting yellow-red or red light. The first fluorescent substance is composed of a SiAlON phosphor represented by the general formula: CaX(Si,Al)12(O,N)16: Eu y2+ wherein the main phase has an alpha-sialon crystal structure. |