1：Experimental Design and Method Selection:

The study involved the synthesis of PEDOT-MeOH:PSS conducting polymers through oxidative chemical polymerization, varying the amount of PSS and ferric oxidizing agent to control the reaction kinetics, chain length, and oxidation state of polymers. Ethylene glycol was added in post-synthesis treatment to modify the polymers' properties.

2：Sample Selection and Data Sources:

The samples were synthesized with different molar ratios of PSSH, Na2S2O8, Fe2(SO4)3, and NaOH to monomer EDOT-MeOH, denoted as PSS100-L, PSS100-H, PSS80-L, PSS80-H, PSS60-L, and PSS60-H.

3：List of Experimental Equipment and Materials:

Materials included EDOT-MeOH monomers, PSSH, Na2S2O8, Fe2(SO4)3, NaOH, ethylene glycol, and various solvents. Equipment included a UV-Vis spectrophotometer, Raman microscope, AFM, and four-point probe for conductivity measurements.

4：Experimental Procedures and Operational Workflow:

The polymerization process involved mixing PSSH with EDOT-MeOH in water, adding oxidizing agents, and stirring. The resulting polymers were characterized using UV-Vis spectroscopy, Raman spectroscopy, AFM, and conductivity measurements. PVSCs were fabricated using these polymers as HTLs.

5：Data Analysis Methods:

The electrical conductivity and work function of the polymers were measured and correlated with their structural and morphological properties. The performance of PVSCs was evaluated based on PCE, Voc, Jsc, and FF.