SUBSTRATE CARRYING AN ELECTRODE, ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING SAID SUBSTRATE, AND PRODUCTION THEREOF

A substrate bearing, on one main face, a composite electrode, which includes an electroconductive network formed from strands made of an electroconductive material based on a metal and/or a metal oxide, and having a light transmission of at least 60% at 550 nm, the space between the strands of the network being filled by a material referred to as an insulating fill material. The composite electrode also includes an electroconductive coating covering the electroconductive network, and in electrical connection with the strands and in contact therewith, having a thickness greater than or equal to 40 nm, of resistivity rho1 less than 105 Omega·cm and greater than the resistivity of the network, the coating forming a smoothed outer surface of the electrode. The composite electrode additionally has a sheet resistance less than or equal to 10Omega/ .