TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The anode is an indium-tin oxide-layer or indium-zinc oxide-layer.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Composition: The device further comprises at least one further layer, cathode and anode. Preferred Process: The adhesive fluorine-fluorine interaction takes place between a part of the fluorine-containing groups of the first layer and at least one further layer. Preferred Components: The device comprises: more layers of polymers with emitter function; and three layers with the basic colors of red, green and blue. In the device, at least one of the layers contains singlet emitter and one of the other layers contains triplet emitter. The device comprises several layers of polymers with charge transport function e.g. perforated conductor, where the conductor comprises energetically different highest occupied molecular orbital. The device comprises more layers of polymers with hole leader function, where the hole leader exhibits energetically different highly occupied molecular orbit (HOMO). In the device, a finally applied polymer layer with hole leader function exhibits energetically high lowest occupied molecular orbit (LUMO). The finally applied polymer layer is electron blocking layer. The device comprises more layers of polymers with electron leader function, where the electron leader exhibits energetically different LUMO. The finally applied polymer layer with electron leader function exhibits energetically low HOMO. The first applied polymer layer with electron leader function is a hole blocking layer. The device comprises a layer with low molecules or oligomers. The further layer comprises a polymer with hole injection function, hole transport function, hole blocking function, emitter function, electron injection function, electron blocking function and/or electron transport function.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The layer is: a polymer with charge injection and/or charge transport function; or a polymer with emitter function. The polymer is a blend made of two or more polymers. The further layer comprises a polymer with fluorine-containing group and the polymer comprises an emitter function. The polymer with emitter function emits light of different wavelengths to add white color. The cathode and/or anode are a conductive polymer.