ORGANIC LIGHT EMITTING DEVICE

A substrate for an organic light-emitting device, includes a transparent substrate having an optical index n0, bearing, on a first main face, a first transparent or semi-transparent coating of an electrode, referred to as the lower electrode, with a sheet resistance less than or equal to 6 / and which includes the following stack of layers: an anti-reflection sublayer having a given optical thickness L1 and having an optical index n1 such that the ratio of n1 to n0 is greater than or equal to 6/5; a first metallic layer having a given thickness e1; a first separating layer, having a given optical thickness L2; a second metallic layer, having an intrinsic electrical conductivity property, and having a given thickness e2; and an overlayer for adapting the work function, L1 being between 20 nm and 120 nm, L2 between 75 nm and 200 nm, and the sum of the thicknesses e1+e2 of the first and second metallic layers being less than or equal to 40 nm.