▎ 摘　　要

NOVELTY - Organic electroluminescent device based on laser reduction patterned graphene electrode comprises a substrate, an extraction electrode, an organic functional layer and a cathode. The extraction electrode has a channel structure and is provided with a gold electrode. The graphene electrode is overlapped in the channel on both sides of gold electrode. The organic function layer comprises a hole injection layer, a hole transporting layer and a light emitting layer as an electron-transporting layer. The micron patterned graphene electrode is prepared by using micro-nanofabrication technology. USE - Used as an organic electroluminescent device based on laser reduction patterned graphene electrode. ADVANTAGE - The device: has high light emitting uniformity, occupies less area in comparison with the conventional device, comprises electrodes with area reduced to micron level; and is provided with a micro pattern structure. The graphene electrode has flat surface with less surface roughness. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the organic electroluminescent device based on laser reduction patterned graphene electrode, comprising: cleaning the cover glass substrate, using metal deposition system for the growth of extraction electrode having a channel structure, which is provided with the gold electrode, controlling the vacuum degree of growth process in the system to 1-3x 10-3 Pa, placing a copper wire metal mask on the gold electrode and channel in the intermediate position, where the thickness of gold electrode is 15-20 nm, and the width of the channel is 50-120 mu m, spin coating graphene oxide suspension on the top of the gold electrode at a speed of 1000-3000 rotations/minute for 15-20 seconds, placing the spin coated graphene oxide substrate under vacuum, drying under vacuum at 35-40 degrees C for 40-60 minutes, using a point-by-point scanning laser direct write processing system for reducing the graphene oxide, simultaneously preparing the ladder-shaped or ring type patterned graphene electrode on graphene oxide, overlapping the graphene electrode in the channel on the both sides of the gold electrode, where the thickness of graphene electrode is 15-30 nm, the transverse length is 20-150 mu m, and the longitudinal length is 40-300 mu m, sequentially developing a hole injection layer, a hole transporting layer, a light emitting layer as the electron-transporting layer and a cathode on the graphene electrode in the multi-source organic molecule vapor deposition system, and preparing into organic electroluminescent device based on laser reduction patterned graphene electrode.