Conjugated PEDOT:PSS polymers have much lower mobility than inorganic semiconductors and are traditionally better for conducting holes than electrons. Typical hole mobilities range are about 0.001 cm² V⁻¹ s⁻¹ [1]. Additional layer of PEDOT:PSS facilitates transport of charge carriers to electrode. As one can see in cells with PEDOT:PSS layer energy conversion efficiency increased in comparison to the cell with the same active layer. We obtained the best energy conversion efficiency for the architecture ITO/PEDOT:PSS/PAQX1+P3OT/Al. Results of this work proved that photovoltaic cells need further modification in order to increase energy conversion efficiency.
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