| 摘要 |
<p>An organic electroluminescent device is provided to improve lifetime, efficiency brightness, and color purity, to lower driving voltage, and to enhance stability. An organic electroluminescent device comprises an organic material layer which is inserted between a positive electrode and a negative electrode on a substrate and comprises a light emitting layer comprising at least one host compound represented by the formula 1 and at least one dopant compound represented by the formula 2. The doping concentration of a dopant to a host in a light emitting region is 0.5-20 weight%. The organic material layer comprises at least one compound selected from the group consisting of an arylamine-based compound a styrylarylamine-based compound.</p> |
