TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The organic solar cell comprises a series of organic thin films and contact layers with at least one doped transport layer and at least a photo-active layer, which are arranged in p-i-n-, n-i-p-, n-i-M or M-i-n-diode-structure from respectively at least one p-, i- or n-layers. At least one electron transport layer (n-layer) is made of at least one compound (I). The organic solar cell is a multi-junction solar cell made of a stack of at least two single organic solar cells, which are connected by a conversion contact using the recombination of electrons and holes and comprises least one layer of organic, inorganic or a combination of organic or inorganic materials. The organic solar cell comprises at least other material conducting the negative charges (electrons), which is referred as the electron-transport layer. The organic solar cell comprises an antidiffusion layer made of metals or transition metals (e.g. not limited to titanium, lead and chromium). The organic solar cell comprises contacts made of thin metal layers comprising a metal, which is not limited to aluminum, silver, gold, ytterbium, chromium, nickel, magnesium, iron, or a combination of several metals. The organic solar cell comprises conversion contacts made of thin metal layers, inorganic materials, which are not limited to nanocrystal composed of less than 100 nm large clusters of metal or inorganic material or organic materials, which are not limited to doped or undoped molecules or polymers. The organic solar cell comprises: p-dopant as electron acceptors, which are not limited to a hole transport layer (HTL); and n-dopants as electron donors, which are not limited to electron transport layers. The organic solar cell comprises layer sequence of strongly doped materials, where the layer sequence comprises at least one p-doped and at least one n-doped material and acts as a charge carrier conversion total contact. The organic solar cell comprises materials, which acts as the encapsulation. The organic solar cell comprises outer layers for light coupling. Preferred Method: The organic solar cell is produced on a substrate, which is not limited to glass, aluminum foil, steel, textile material or plastic film. The organic solar cells or its parts are produced by: thermal evaporation or other thermal processes; rotational coating/spinning (spin coating), immersion (dip-coating), dropping (drop casting), knife coating (doctor-blading), chemical vapor-phase deposition (chemical vapor phase deposition, or organic vapor phase deposition, electrode position, or other chemical, electrochemical or wet chemical methods; screen printing, offset printing, inkjet printing and other methods based on printing; magnetron sputtering or other method based on sputtering; molecular beam epitaxy or similar method; laminating or similar methods; self-structuring monolayers (self assembled monolayers) or similar method; and using (I) as a monomer, which is polymerized in situ by exposure to light, free radicals, catalytic, thermal or similar method for crosslinking the layer. The organic solar cells or its parts are produced in the reverse order, which is not limited to replacing the cover contact and ground contact. EXAMPLE - No suitable example given.