| abstract |
The present invention relates to a method for producing a substrate coated with rylene tetracarbolic acid diimides, wherein a substrate is treated with an N,N'-bisubstituted rylene tetracarbolic acid diimide, and the treated substrate is heated to a temperature at which the N,N'-bisubstituted rylene tetracarbolic acid diimide is transitioned into the corresponding N,N'-unsubstituted compound. The present invention further relates to semiconductor chips, organic solar cells, excitonic solar cells, and organic light-emitting diodes comprising a coated substrate produced according to said method. The present invention further relates to a method for producing N,N'-unsubstituted rylene tetracarbolic acid diimides, wherein corresponding N,N'-bisubstituted rylene tetracarbolic acid diimides are provided and heated to a temperature at which said compounds are transitioned into the corresponding N,N'-unsubstituted compounds. |