| 摘要 |
Disclosed is an organic light emitting device having improved lifespan and power efficiency properties. The organic light emitting device comprises: a first electrode; a second electrode facing the first electrode; a light emitting layer interposed between the first electrode and the second electrode; a hole transport region which is interposed between the first electrode and the light emitting layer, and comprises an electron blocking layer (EBL); and an electron transport region which is interposed between the light emitting layer and the second electrode, and comprises a hole blocking layer (HBL). The electron blocking layer comprises a compound represented by chemical formula 1, and the hole blocking layer comprises a compound represented by chemical formula 2. |
