Various treatments on the PEDOT:PSS films were carried out to investigate it’s influence on the conductivity, morphology, transmittance and the corresponding impact of the performance of the organic photovoltaic devices based on the PCPDTBT:PCBM and P3HT:PCBM blends. These processing including doping PEDOT:PSS with DMF and ME solvents and exposing these films to the vapor of DMF and ME solvents, separately. A considerable enhancement of the conductivity and transmittance of PEDOT:PSS was observed after doping solvent into the PEDOT;PSS solution followed by solvent treatment through exposing these films to solvents environment. The best organic PV doped devices based on either PCPDTBT:PCBM or based on P3HT:PCBM with power conversion efficiency were 2.93% compared to 1.87% for the pristine PV devices or 2.79% compared to 1.77% for the pristine devices, respectively. The conductivity improvement was highly influenced by solvent treatment.
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The authors are gratefully acknowledge the support from advances polymer lab, Physics Department, College of Science University of Babylon, University of Missan, and Sheffield Hallam University.
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Al-Hashimi, M., Kadem, B., Rahaq, Y. et al. The effects of solvent treated PEDOT:PSS buffer layer in organic solar cells. J Mater Sci: Mater Electron 29, 13889–13896 (2018). https://doi.org/10.1007/s10854-018-9521-2