investigating the effect of argon jet plasma on the change ito surface energy in polymer solar cells

in this project we investigated the performance of inverted organic solar cells with plasma jet-treated indium tin oxide (ito) as the cathode for omitting an electron transport layer try to increase adhesion and surface energy of ito substrate by atmospheric pressure argon plasma jet. the ar plasma jet works out of the chamber and in atmospheric pressure in cold temperature by rf power supply. after this level we able to remove electron transport layer and investigate the effects according to measuring the angle of contact and transparency good results were obtained, the photovoltaic performance was found to be dependent on the applied power of plasma. after applying the plasma on ito surface morphological changes were also observed and we investigate that with atomic force microscopy (afm) analyze. then we fabricated p3ht \ icba based inverted polymer solar cells and the highest obtained efficiency was 4.30 %.