NOVELTY - Substituted polycyclic group containing organic compounds (I) are new.    USE - (I) are useful in a photovoltaic layer of a photovoltaic device (claimed), which is useful for transforming energy of light, and for converting solar energy into electric energy.    DETAILED DESCRIPTION - Substituted polycyclic group containing organic compounds of formula ((X1p)Cor1(R1m)-B1-(X2q)Cor2(R2n)-B1-(X1p)Cor1(R1m)) (I) are new, where (I) forms rod-like supramolecules and absorbs electromagnetic radiation in at least one predetermined spectral subrange within a wavelength of 400-3000 nm with excitation of electron-hole pairs, the polycyclic core Cor1, the bridging group B1 and the polycyclic core Cor2 form a molecular system Cor1-B1-Cor2-B1-Cor1 comprising donor-bridge-acceptor-bridge-donor system or acceptor-bridge-donor-bridge-acceptor system, in which a dissociation of excited electron-hole pairs is carried out.    Cor1 = polycyclic core of a first type;    Cor2 = polycyclic core of a second type;    B1 = bridging group providing a bond of the polycyclic core Cor1 with the polycyclic core Cor2 via covalent chemical bonds;    R1, R2 = molecular groups providing solubility of (I) in a solvent;    m = 1-4;    n = 0-4;    X1, X2 = modifying groups which modify energy levels highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the polycyclic cores Cor1 and Cor2 accordingly; and    p, q = 0-2.    INDEPENDENT CLAIMS are also included for:    (1) a photovoltaic device comprising a first electrode (1) and a second electrode (2) and at least one photovoltaic layer (4) having a front surface and a rear surface, where the photovoltaic layer comprising at least one of (I), where (I) is homeotropically aligned in respect to the photovoltaic layer surface and the polycyclic cores Cor1 and Cor2 assemble into a pi - pi stack of a first type and a pi - pi stack of a second type respectively, and the stacks of one type provide electron transport, the stacks of another type provide hole transport and the stacks are electrically isolated form each other by the molecular groups R1 and R2; and    (2) the photovoltaic layer comprising (I).    DESCRIPTION OF DRAWING(S) - The diagram shows the cross section of a photovoltaic device.    First electrode (1)    Second electrode (2)    Resistive load (3)    Photovoltaic layer (4)    Substrate (5)