Abstract
Photoconductive and photovoltaic properties of composite films based on poly-N-epoxypropylcarbazole with added new merocyanine dyes derived from fluorene were investigated. The composites were found to have hole-type photoconductivity although the internal photoeffect was determined by photogeneration of charge carriers from dye molecules and transport of holes along polymer-matrix donor fragments according to jump-type conductivity. It was concluded that the photovoltaic response increased if merocyanine dyes with electronic structures close to that of the ideal polymethine were used.
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