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Abstract
Novel polymeric film composites based on naphthalimide-containing methacrylic copolymer doped with symmetrical cationic polymethine dyes with different polymethine chain length have been prepared. It was found that the obtained film composites exhibit photovoltaic properties in the absorption spectral region of the dyes. If the length of the polymethine chain is reduced the value of the photovoltaic response is increased as a result of decrease in the energy of the highest occupied orbital of the dye molecule. In the samples of the composite films with a free film surface the photovoltaic effect is determined by diffusion of the more mobile photogenerated positive charge carriers and by their recombination time.
