A light emitting device having an anode and a cathode provided on a
substrate, and an organic light emitting layer between the anode and the
cathode, where the organic light emitting layer includes a light emitting
material and a dopant for improving the dispersibility thereof. As the
dopant, there are employed a light emitting compound and a non-light
emitting compound or a current enhancing material. In case of employing
the light emitting compound, the composition corresponds to a case of
utilizing plural light emitting materials, and, in such case, the light
emission wavelengths are preferably mutually closer. Also, evaporation of
the light emitting material and the dopant in the same evaporation boat
makes it possible to reduce evaporation temperature, thereby improving
the dispersability of the light emitting material.