| 摘要 |
A method of fabricating an organic light emitting device comprises patterning a first electrode layer 106 to form a grid comprising a mesh of electrically conductive metal tracks, depositing a layer of hole injection material 108 from a solution comprising less than 10% solids by weight in a solvent, the thickness of the wet layer of solution before the solvent is evaporated to dry the film being greater than the track spacing, evaporating the solvent to provide a dry film having an average thickness in the spacing between the tracks which is less than 10% of the thickness of the wet layer of solution before evaporation and an average thickness in the spacing between the tracks which is greater than 25% of the track thickness to provide a more planar top surface than the surface of the metal tracks before the layer of hole injection material 108 was deposited, depositing one or more further layers from solution to provide a light emitting layer 110 and one or more optional charge transporting layers, and depositing a second electrode layer. Also disclosed is an organic light emitting device comprising: a first electrode layer 106, comprising first and second electrically conductive grids each having different widths, one width being larger than the other; a light emitting layer 110 and a second electrode layer. |
