ORGANIC LIGHT EMITTING DIODE

摘要

PURPOSE: An organic light emitting diode is provided to prevent light leakage by capturing excitons in a light emitting layer, thereby obtaining an organic electroluminescent device with excellent luminous efficiency. CONSTITUTION: An organic light emitting diode includes a positive electrode, a negative electrode, and at least one organic material layer disposed between the positive electrode and the negative electrode. The organic material layer includes a light emitting layer. Between the positive electrode and the light emitting layer, an organic material layer including a compound represented by chemical formula 1 is placed. Between the negative electrode and the light emitting layer, an organic layer including a compound represented by chemical formula 2 or 3 is placed. Between the positive electrode and the light emitting layer, an electron-blocking layer is placed, and the electron-blocking layer includes the compound represented by chemical formula 1.