Oriented polymer photovoltaic cells

In order to improve the photogeneration efficiency and charge transport in polymer photovoltaic cells, we orient diode like molecules inside a polymeric monolayer. Previous results gave experimental evidence of the induction of a rectification behavior as well as an increase in the charge mobility through polar orientation. We present here the first experimental realization where the photovoltaic conversion efficiency is increased by two orders of magnitude in a semiconducting polymer blend.