研究目的
To develop a simple and effective processing protocol to improve the electrical conductivity of PEDOT:PSS films via post-treatment with an alcohol-based solvent, 2-chloroethanol (2-CE), and to enhance their performance as a transparent anode in organic photovoltaic cells (OPVs).
研究成果
The 2-CE treatment protocol significantly improved the electrical conductivity of PEDOT:PSS films while maintaining high transparency, making it suitable for use as transparent anodes in OPVs. The treated films showed superior performance in OPV devices compared to DMSO-added films, with a higher PCE. The method is also applicable to flexible substrates, indicating its potential for flexible electronics.
研究不足
The study focused on the comparison between 2-CE-treated and DMSO-added PEDOT:PSS films. The scalability of the 2-CE treatment process and its long-term stability in various environmental conditions were not extensively explored.
1：Experimental Design and Method Selection
The study involved comparing the optical and electrical properties of 2-CE-treated PEDOT:PSS with those of standard PEDOT:PSS-based electrodes with the addition of 5 vol% DMSO. The protocol included post-treatment of PEDOT:PSS films with 2-CE and characterization of their properties.
2：Sample Selection and Data Sources
PEDOT:PSS films were prepared on soda-lime glass and flexible polyethylene terephthalate (PET) substrates. The films were treated with 2-CE or DMSO for comparison.
3：List of Experimental Equipment and Materials
PEDOT:PSS solutions (Clevios PH1000 and AI4083), 2-chloroethanol (2-CE), dimethyl sulfoxide (DMSO), PTB7-Th, PC71BM, and various solvents were used. Equipment included spin-coaters, surface profilometers, spectrophotometers, XPS, UPS, and OPV characterization setups.
4：Experimental Procedures and Operational Workflow
Films were prepared by spin-coating PEDOT:PSS solutions on cleaned substrates, followed by post-treatment with 2-CE or addition of DMSO. The films were then characterized for thickness, transmittance, sheet resistance, and DC conductivity. OPV devices were fabricated and tested.
5：Data Analysis Methods
Data analysis included calculating DC conductivity from sheet resistance and thickness measurements, analyzing XPS and UPS spectra, and evaluating OPV performance parameters from J-V curves and EQE spectra.
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