| abstract |
The invention belongs to the field of organic photoelectric devices, and discloses an organic light-emitting diode that emits light in forward and reverse directions. The organic light emitting diode is sequentially composed of a substrate, an ITO electrode layer, a heterojunction layer 1, a light emitting unit 1, a heterojunction connection layer, a light emitting unit 2, a heterojunction layer 2 and an Al electrode layer from bottom to top. For the first time, the invention utilizes the high-efficiency charge generation characteristics of organic semiconductor heterojunctions to prepare organic light-emitting diodes with high efficiency forward and reverse light emission. regulation of even white light emission. Since the organic light-emitting diodes of the present invention all use low-temperature vapor-deposited organic semiconductor materials, while simplifying the process and improving compatibility, it also avoids the problem of damage to devices caused by the preparation of high-temperature inorganic insulating layers. |