| 主权项 |
1. Organic electroluminescent device comprising, in this sequence, an anode, a yellow-, orange- or red-emitting layer, a blue-emitting layer and a cathode, characterised in that at least one electron-transport layer 1, which is adjacent to the blue-emitting layer, and an electron-transport layer 2, which is adjacent to the cathode or the electron-injection layer, are introduced between the blue-emitting layer and the cathode. |
