| abstract |
The present invention includes an anode, a cathode, and an organic material layer between the anode and the cathode; The organic material layer includes one or more light emitting layers; It relates to an organic electroluminescent device in which at least one of the light emitting layers includes one or more dopant compounds and two or more host compounds. The organic electroluminescent device according to the present invention has low driving voltage, high color purity, high luminous efficiency and long lifespan. |