TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method comprises preparing a first mixture (M1) including the organic semiconductors (C(N)) and (C(p)) within a solvent medium (S1), adding a crosslinking additive as mixture (M2) having two azide groups, optionally solvent and a solvent medium (S2) to (M1) and the rest of semiconductor modified by grafting the azide groups and optionally solvent under conditions of sufficiently low temperature to inhibit the precipitation by crosslinking one and/or other organic semiconductors with crosslinking additive to form the mixture (M) including the organic semiconductors (C(N)) and (C(p)) and solvent (S) adapted to phase segregation, and disposing the mixture (M) on the surface of the substrate by increasing the temperature during or after phase segregation and/or by subjecting reaction medium to long wavelength UV radiation adapted to be placed under the conditions, where crosslinking additive react to form covalent bond with at least a part of organic semiconductors. The depositing step is carried out at a temperature of less than 50 degrees C, preferably less than 40 degrees C. Preferred Components: The semiconductors modified by grafting the azide groups are organic semiconductors (C(N)) functionalized by at least an azide group, preferably (II) or (II) obtained by hydrolysis of PCBM and PCBA and esterifying PCBA with 4,4,4-triaminobutan-1-ol and 7,7,7-triaminoheptan-1-ol. The organic semiconductors (C(N)) consist of: fullerenes and their derivatives, preferably (6,6)-phenyl-61C-butyric acid methyl ester, (6,6)-phenyl-60C-butyric acid methyl ester, (6,6)-phenyl-70C-butyric acid methyl ester and (6,6)-phenyl-71C-butyric acid methyl ester; polyfluorene type polymers; poly-oxa-1,4-phenylene-(1-cyano-1,2-vinylene)-(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene)-1,2-(2-cyanovinylene)-1,4-phenylene; and poly(styrene sulfonate). The organic semiconductors (C(P)) consist of: derivatives of polythiophene, preferably poly(3-hexylthiophene-2,5-diyl); tetracene; anthracene; polythiophenes; derivatives of polyphenylene-vinylene, preferably poly(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene-vinylene) and poly(2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene-vinylene); and polymers with low band gap, preferably poly(2,7-carbazole-alt-4,7-dithienyl-2,1,3-benzothiadiazole). The molar ratio of crosslinking agent/semiconductors (C(N)) is less than 2, preferably less than 1. The solvent (S) of the mixture (M) comprises a mixture of: a first fraction (F1) that consists of a solvent or its mixture with a boiling point lower than (C(P)) and (C(N)) and solvating (C(P)) and (C(N)); a second fraction (F2) consisting of a solvent or its mixture with a boiling point that is greater than (C(P)) and (C(N)). The crosslinking agent is 4,4'-bis(azidomethyl)-1,1'-biphenyl.