| 摘要 |
Provided is an organic light emitting device, which comprises: an anode; a first light emitting blocking layer disposed on the anode; a first hole transport layer disposed on the anode; a light emitting layer disposed on the first hole transport layer; an electron transport layer disposed on the light emitting layer; and a cathode disposed on the electron transport layer. The first light emitting blocking layer includes a first host material and a first charge trap material. The first charge trap material has a lowest unoccupied molecular orbital (LUMO) level different from a highest occupied molecular orbital (HOMO) level of the first host material. The first light emitting blocking layer of the organic light emitting device traps the charge generated by leakage current, so unnecessary light emitting of the organic light emitting device caused by the leakage current is suppressed, a black grayscale value can ideally decrease, and a black reddish phenomenon can be ameliorated. |
