Organic opto-electric device and a method for manufacturing an organic opto-electric device
View Patent ↗An organic opto-electric device has a layer stack with a base electrode, an organic layer assembly, a cover electrode and a contact layer. The organic layer assembly is arranged between the base electrode and the cover electrode and the cover electrode is arranged between the organic layer assembly and the contact layer. The cover electrode and the base electrode are structured to form several laterally adjacent optically active areas and the base electrode, the organic layer assembly, the cover electrode and the contact layer are interconnected by vias such that at least two optically active areas are connected in series so that a current flow through the at least two optically active areas passes in a direction between the base electrode and a cover electrode. The current flow between the at least two optically active areas passes through the contact layer, wherein the contact layer contacts the base electrode above one of the vias laterally in the interior of the two optically active areas.
1. An organic opto-electric device, comprising:
a layer stack comprising a base electrode, an organic layer assembly, a cover electrode, an insulation layer and a contact layer, wherein
the organic layer assembly is arranged between the base electrode and the cover electrode and the cover electrode is arranged between the organic layer assembly and the contact layer,
the cover electrode and the base electrode are structured to form several optically active areas, which are adjacent to each other in a direction parallel or substantially parallel to major planar surfaces of the layer stack, and the base electrode, the organic layer assembly, the cover electrode and the contact layer are interconnected by vias,
at least a first and a second optically active area are connected in series such that a current flow within each of the at least the first and second optically active areas is directed in a direction extending between the base electrode and the cover electrode,
the contact layer contacts the cover electrode in the first optically active area,
the contact layer contacts the base electrode through one of the vias extending in a direction perpendicular or substantially perpendicular to the major planar surfaces of the layer stack in an interior of the second optically active area, so that the current flow passes between the at least two optically active areas through the contact layer,
the insulation layer is partially arranged between the contact layer and the cover electrode, so that within the second optically active area the respective contact layer is electrically insulated from the respective cover electrode, and
the insulation layer protects the organic layer assembly in the direction parallel or substantially parallel to the major planar surfaces of the layer stack.
2. The organic opto-electric device according to claim 1 , wherein a first optically active area is formed by a first part of the base electrode and a first part of the cover electrode which contact the organic layer assembly on both sides and a second optically active area is formed by a second part of the base electrode and a second part of the cover electrode which contact the organic layer assembly on both sides, wherein a lateral distance exists between the first optically active area and the second optically active area.
3. The organic opto-electric device according to claim 1 , wherein:
the cover electrode includes via pass openings; and
the insulation layer is arranged to insulate the cover electrode and the vias within the via pass openings.
4. The organic opto-electric device according to claim 1 , wherein a contacting of the cover electrode is executed though a contact pad formed at a first or last of the optically active areas connected in series.
5. The organic opto-electric device according to claim 1 , wherein the cover electrode and the contact layer comprise a metal.
6. The organic opto-electric device according to claim 1 , further comprising a transparent substrate on which the base electrode is formed and wherein the base electrode comprises a transparent material so that at least two optically active areas are formed on the substrate.
7. The organic opto-electric device according to claim 6 , wherein the vias contact the base electrode at a side of the base electrode that is opposite to a side of the base electrode that faces the substrate.
8. The organic opto-electric device according to claim 1 , wherein at least two of the vias are arranged in at least one of the first and second optically active areas.
9. The organic opto-electric device according to claim 1 , wherein the contact layer comprises a layer thickness which is selected such that a surface resistance of the contact layer lies below a predetermined threshold value.
10. The organic opto-electric device according to claim 1 , wherein the organic layer assembly comprises complementarily doped organic layers forming a pn transition.
11. The organic opto-electric device according to claim 1 , forming an organic light-emitting diode or an organic solar cell.
12. A luminous element, comprising:
a plurality of organic opto-electric devices connected in series or in parallel, the organic opto-electric devices, comprising:
a layer stack comprising a base electrode, an organic layer assembly, a cover electrode, an insulation layer and a contact layer, wherein
the organic layer assembly is arranged between the base electrode and the cover electrode and the cover electrode is arranged between the organic layer assembly and the contact layer,
the cover electrode and the base electrode are structured to form several optically active areas, which are adjacent to each other in a direction parallel substantially parallel to major planar surfaces of the layer stack, and the base electrode, the organic layer assembly, the cover electrode and the contact layer are interconnected by vias,
at least a first and a second optically active area are connected in series such that a current flow within each of the at least the first and second optically active areas is directed in a direction extending between the base electrode and the cover electrode,
the contact layer contacts the cover electrode in the first optically active area,
the contact layer contacts the base electrode through one of the vias extending in a direction perpendicular or substantially perpendicular to the major planar surfaces of the layer stack in an interior of the second optically active area, so that the current flow passes between the at least two optically active areas through the contact layer,
the insulation layer is partially arranged between the contact layer and the cover electrode, so that within the second optically active area the respective contact layer is electrically insulated from the respective cover electrode, and
the insulation layer protects the organic layer assembly in the direction parallel or substantially parallel to the major planar surfaces of the layer stack,
wherein the luminous element forms a luminous surface and the luminous surface is formed by optically active areas arranged in a mosaic.
13. The luminous element according to claim 12 , wherein the optically active areas are arranged in a quadrilateral, hexagonal or octagonal form.