Abstract
The photoconductive and photovoltaic properties of fi lm composites based on the new oligomer polyepoxypropylpyridobenzothiazole were compared with the known poly-N-epoxypropylcarbazole, which contains the squarylium dye as a photoconductivity sensitizer. It was found that these composites have hole-type photoconductivity, and the internal photoelectric effect is determined by the photogeneration of charge carriers from dye molecules and by transport of the holes along the donor fragments of the polymer matrix. The photoconductivity and photovoltaic response increase in the transition to the new oligomer with the more effi cient conjugation system in the donor fragments.
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