| abstract |
The invention discloses a top emission organic electroluminescence device, which relates to the technical field of organic photoelectric display. The technical problem to be solved by the present invention is the problem of low light extraction efficiency of the current top emission device. The top emission organic electroluminescence device of the present invention includes an anode, an organic layer, a cathode, and a cover layer in sequence, and the cover layer sequentially includes a first cover layer and a second cover layer, and the first cover layer has a higher refractive index than The refractive index of the second cover layer, the first cover layer contains the amine derivative represented by formula I, and the second cover layer contains a metal halide. The top emission organic electroluminescence device of the present invention has two covering layers, namely, the first covering layer contains the amine derivative of formula I of the present invention, and the second covering layer contains metal halide, and the refractive index on the light-emitting side decreases, The device has higher luminous efficiency and longer service life. |