Method of producing an organic light-emissive device

A method of producing an organic light-emitting device comprising a patterned electroluminescent polymer layer arranged between two electrodes such that charge carriers can move between the first and second electrodes and the electroluminescent polymer layer, the method comprising the steps of (a) providing a substrate comprising the first electrode, (b) providing solid particles comprising the electroluminescent polymer and capable of supporting an electrostatic charge;

• (c) providing a transfer surface having portions which are independently capable of supporting an electrostatic charge and applying an electrostatic charge to selected portions of the transfer surface;
• (d) applying said solid particles comprising electroluminescent polymer to said charged selected portions of said transfer surface by virtue of an electrostatic interaction between said selected portions of the transfer surface and the solid particles;
• and (e) contacting the transfer surface with the substrate so as to transfer the solid particles held thereon to selected portions of the substrate and securing them to the substrate to thereby form a patterned electroluminescent polymer layer on the substrate;
• and (f) forming the second electrode over the surface of the patterned electroluminescent polymer layer opposite the first electrode.