Soluble electron-donor conducting (co)polymers based on functionalized monomeric anilines have been synthesized and characterized for the first time. It has been shown that there is a good correlation between the results obtained from investigations of the electrochemical properties of polyaniline derivatives by the methods of cyclic voltammetry and on the basis of the temperature dependence of the electrical conductance. The polymer based on 2-(1-methyl-2-buten-1-yl)aniline has the lowest energy level of the highest occupied molecular orbital, which determines the prospects for its use as a donor in the active layer when designing organic solar cells.

Novel developmental prototypes of solar cells based on binary donor-acceptor systems in the form of a combination of polyaniline derivatives with fullerene-containing polymers were obtained. Current-voltage characteristics of solar cells were measured, and numerical values of parameters, including open-circuit voltage, short-circuit current, filling factor, and coefficient of efficiency, were calculated on their basis.

Organic-inorganic multilayer structures of the silicon∕polymer∕metal type have been fabricated. The current-voltage characteristics of these structures versus temperature are measured. The obtained results are treated within different models of charge transport such as Richardson-Schottky thermionic emission, Fowler-Nordheim tunneling, and Pool-Frenkel and hopping mechanisms. The conclusions about the mechanisms of charge transport at different electric fields and temperatures have been made. The Richardson-Schottky model is in good quantitative agreement with the experimental data in the case of the metal-polymer interface with the energy barriers of 0.26–0.10eV. The charge transport in the polymer is explained by the hopping mechanism near the Fermi level with the activation energies being of 0.01–0.04eV.

The possibility of creating a region of anomalously high conductivity at the interface between two dielectric polymers has been demonstrated. The charge carrier mobility and the specific conductance in this region have been estimated by several methods. An analysis of the results makes it possible to hypothesize that a layer with a quasi-two-dimensional electron gas is formed in the interface region between two dielectric polymer films.

The optoelectronic properties of a new poly(2-ethyl-3-methylindole) (MPIn) are discussed in this paper. The absorption and photoluminescence spectra were studied. The electronic spectrum of MPIn showed a single absorption maximum at 269 nm that is characteristic of the entire series of polyindoles. The fluorescence spectra show that the emission peaks of the test sample are centered around 520 nm. The photoconductivity of thin film samples of MPIn polyindole was studied by measuring the current-voltage characteristics under ultraviolet radiation with a wavelength of 350 nm. Samples of phototransistors were obtained, where thin films of MPIn polyindole were used as a transport layer, and their characteristics were measured and analyzed. The value of the quantum efficiency and the values of the mobility of charge carriers in thin polyindole films were estimated.