| abstract |
The invention discloses a white light organic electroluminescent device, which is arranged in the following order: a cathode; an organic functional layer; and an anode; the organic functional layer includes at least three light emitting layers and at least two layers Spacer layers, the light-emitting layers are arranged alternately through the spacer layers; the light-emitting layer includes at least one blue fluorescent layer and at least two phosphorescent layers; the spacer layer includes at least one electronic spacer layer and at least A bipolar spacer layer, or the spacer layer comprises at least one electron type spacer layer and at least one hole type spacer layer, or the spacer layer comprises at least one bipolar spacer layer and at least one spacer layer Cave spacer. The white light organic electroluminescent device of the present invention has the characteristics of simple structure, high efficiency, and non-doping. The organic electroluminescent device adopts non-doping technology, which can effectively reduce process complexity and cost, and is beneficial to the commercialization of the device. |