TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: The charge-injection layer (especially 10-500 nm thick) includes an optionally acid- or oxidant-doped polymer of conductivity above 10-8 S/m (especially a polythiophene or polyaniline or derivative) and can be replaced by a semi- or non-conducting (in)organic layer. The mixture used to coat the charge-injection layer includes a soluble polymer and low-molecular compounds, at least 2 of which are different, the reaction being a crosslinking reaction which is a radical, anionically or cationically initiated polymerization reaction, a metathesis reaction or a Diels-Alder reaction. This crosslinking reaction especially uses(A) a conjugated crosslinkable polymer of molecular weight 50-500 to give a crosslinked layer 1-300 nm thick;(B) a cationically crosslinkable triarylamine-, thiophene- and/or triarylphosphene-based polymer optionally also containing (spirobi)fluorene, dihydrophenanthrene, indenofluorene and/or phenanthrene copolymerized structures;(C) cationically crosslinkable group-containing compounds comprising (i) electron-rich olefins, (ii) heteronuclear multivalent compounds, (iii) ring-opening heteroatom (especially O, S, N, P Si)-containing compounds;(D) low molecular, oligomeric or polymeric organic materials in which greater than or equal to 1 H atom is replaced by oxygen-containing cyclic groups of specified formulae (3 such 3- or 4-membered groups are displayed in the specification with a large number of definitions); or(E) electroluminescent or laser materials including polyphenanthrenes, 3-D triptycenes, quinacridones, tetraarylbenzidine side chain-modified polystyrenes or dendritic amines (a large number of such materials is specified in the claims).Also claimed are electronic components in which the above electroluminescent or laser materials (e) are present in the coating composition as non-reactive materials. EXAMPLE - A device with maximum efficiency 5.35 cd/A, color x 0.20 y 0.29 and life 108 hours at 400 cd/m2 starting light density was obtained by (i) spin coating an ITO-coated glass plate to a thickness of 80 nm with Baytron 4083 (RTM : Pedot/PSSH); (ii) coating a 12 mg/ml toluene solution of a 20/65 mixture of a polymer described in and a blue polyspiro copolymer of formula (2) (R = n-octyl) onto the plate to a thickness of 85 nm; (iii) heating for 2 hours at 150 degrees C; and (iv) either rinsing with THF to remove polymer (2) or evaporating onto the plate a 5 nm thick barium cathode and a 150nm thick silver cover electrode; and (v) sealing the product with a glass cover and a UV-active adhesive.