Organic compound, photovoltaic layer and organic photovoltaic device

The present invention relates generally to the field of organic chemistry and particularly to the organic compound for organic photovoltaic devices. More specifically, the present invention is related to the organic compounds and the organic photovoltaic devices based on these compounds. In one preferred embodiment, this organic compound has the general structural formula (I) where Het1 is a predominantly planar polycyclic molecular system of first type; Het2 is a predominantly planar polycyclic molecular system of second type; A is a bridging group providing a lateral bond of the molecular system Het1 with the molecular system Het2 via strong chemical bonds; n is 1, 2, 3, 4, 5, 6, 7 or 8; B1 and B2 are binding groups; i is 0, 1, 2, 3, 4, 5, 6, 7 or 8; j is 0, 1, 2, 3, 4, 5, 6, 7 or 8; S1 and S2 are groups providing solubility of the organic compound; k is 0, 1, 2, 3, 4, 5, 6, 7 or 8; m is 0, 1, 2, 3, 4, 5, 6, 7 or 8; D1 and D2 are substituents independently selected from a list comprising -CH3, -C2H5, -NO2, -Cl, -Br, -F, -CF3, -CN, -OH, -OCH3, -OC2H5, -OCOCH3, -OCN, -SCN-NH2, -NHCOCH3, -C2Si(CH3)3, and -CONH2; y is 0, 1, 2, 3, 4, 5, 6, 7 or 8; and z is 0, 1, 2, 3, 4, 5, 6, 7 or 8. Said organic compound absorbs electromagnetic radiation in at least one predetermined spectral subrange within a wavelength range from 400 to 3000 nm and is capable to form supramolecules. The molecular system Het1, the bridging group A, and the molecular system Het2 are capable to form a donor-bridge-acceptor system providing dissociation of excited electron-hole pairs. A solution of the organic compound or its salt is capable of forming a solid photovoltaic layer on a substrate.