Device for spraying, method therefor, and organic electronic construction element
The embodiments relate to a device and a method for spraying coatings of organic construction elements. The embodiments relate, in particular, to the spraying of coatings made up of components that do not dissolve in the same solvent, for example, and/or the spraying of a plurality of coatings one after the other. A plurality of spray heads is used, for example one after the other and/or next to one another.
1. An organic electronic device method, comprising providing a substrate, providing a lower electrode and providing an organic active layer with an upper electrode over it the organic active layer, the organic layer being a photoconductive layer obtainable in the form of a bulk heterojunction by spraying a sheet-like substrate with at least two different spraying agents being sprayed simultaneously onto a same surface area.
2. An organic electronic device method as claimed in claim 1 , wherein the at least two different spraying agents are prepared from solutions comprising at least two different solvents.
3. An organic electronic device method as claimed in claim 1 , wherein a first of the at least two spraying agents comprises at least one of P3HT, MDMO-PPV and MEH-PPV and a second of the at least two spraying agents comprises PCBM.
4. An organic electronic device method as claimed in claim 3 , wherein PCBM has the form of at least one of [60]PCBM, [70]PCBM, [84]PCBM, [60]ThCBM, [60]PCB-A and [60]PCB-Cn.
5. An organic electronic device method as claimed in claim 1 , wherein the photoconductive layer comprises P3HT and PCBM and has a layer thickness between 50 nm and 1 mm.
6. An organic electronic device method as claimed in claim 1 , wherein the photoconductive layer is obtained from two spraying agents, the first spraying agent being a solution of P3HT in chloroform and the second spraying agent being a solution of PCBM in xylene.