One kind of a barrier layer having an organic electroluminescent device

The present invention relates to a barrier layer and the organic electroluminescent device includes a substrate, and an anode layer, a light emitting unit and cathode layers are sequentially formed on the substrate having the barrier layer with a; the unit light emitting layer comprises a hole injection layer, a hole transport layer, emission layer, electron transport layer, the hole injection layer formed on said anode layer, the hole transport layer is formed on the hole injection layer according to the a cathode layer formed on the electron transport layer, a hole transport layer between the electron transport layer is a plurality of light emitting layers, the light emitting layer comprises a fluorescent emitting layer and phosphorescent emitting layer, the fluorescence emission layer and a barrier layer is provided between the phosphorescent-emitting layer. Said barrier layer comprises a host material electron transporting material and hole transporting material having the same nucleus. The light emitting device of the present invention can effectively electron transport and hole transport efficiency deployment efficiency, and has the advantage of high luminous efficiency.