Dielectrical properties of PET-MWCNT/P3HT:PC70BM/Al device: Impedance spectroscopy analysis

• Conductive and transparent PET-MWCNT is elaborated.
• The dielectrical behavior of the PET-MWCNTs/MEH-PPV/Al structure is studied.
• Possibility of integration our flexible electrode in the elaboration of OPV.

The dielectrical study in dark and under illumination of flexible organic photovoltaic cell (OPV) based on P3HT:PC70BM nanocomposite, which use transparent and conducting multi walled carbon nanotubes (MWCNT) thin films as anode on plastic substrate, is reported. The high frequency response appearing as a semi-circle indicates the homogeneous nature of the electrode–organic interface. On the other hand, inclined straight line localized at low frequency is attributed to recombination and bulk capacitance in the P3HT:PC70BM blend.

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