| abstract |
The invention discloses an organic composite film and its application in an organic electronic device. The organic composite film includes a functional layer L1 and a functional layer L2 in sequence, wherein the functional layer L1 includes an organic material M1, and the functional layer L2 includes an organic material M1. At least one of the materials M2, M1 and M2 is a polymer, and M1 and M2 have a type II semiconductor heterojunction structure, and min(Δ(LUMO M1 ‑HOMO M2 ),Δ(LUMO M2 ‑HOMO M1 ))≤ min( ET (M1), ET ( M2 ))+ 0.1 eV. In the organic composite film of the present invention, an exciplex is easily formed at the interface between the functional layer L1 and the functional layer L2, which has good stability and can improve device performance. |