Light emitting device provided with semiconducting phosphor configured with four fluorescences having different emission peak wavelengths

A light emitting device comprising:

• a light emitting element having an emission peak wavelength of 350 nm-420 nm;
• and
• a phosphor absorbing light from said light emitting element and emitting fluorescence having a different emission peak wavelength, said phosphor being formed of a semiconductor material that allows an emission peak wavelength to be controlled by transition across a bandgap and being configured with at least four fluorescences having different emission peak wavelengths,
• wherein at least one of the emission peak wavelengths of said plurality of phosphors is selected in a range of 440 nm-480 nm,
• wherein at least one of the emission peak wavelengths of said plurality of phosphors is selected in a range of 500 nm-540 nm,
• wherein at least two of the emission peak wavelengths of said plurality of phosphors are selected in a range of 540 nm-560 nm and a range of 600 nm-680 nm, or a range of 570 nm-610 nm and a range of 610 nm-650 nm.