1：Experimental Design and Method Selection

The study evaluates the performance of PSC in standard configuration (n-i-p) using PAni and its derivative poly(o-methoxy)aniline (PoMA) as HTM, doped with 4-dodecylbenzenesulfonic acid (DBSA) to enhance conductivity. The influence of the dopant and the type of metal contact (Au or Ag) on the device performance were investigated.

2：Sample Selection and Data Sources

PAni and PoMA were synthesized by oxidative polymerization of the respective monomers. Devices were prepared on fluorinated tin oxide glass (FTO Glass) with TiO2 as the blocking and mesoporous layers, and CH3NH3PbI3 as the perovskite layer.

3：List of Experimental Equipment and Materials

Agilent Cary 630 spectrometer for IR spectra, Agilent Cary 60 UV–vis spectrophotometer for UV–vis spectra, XRD-7000 Shimadzu diffractometer for X-ray diffraction, Ecopia HMS-3000 for Hall effect measurements, Autolab Potentiostat for Cyclic Voltammetry, FEI Inspect F50 for SEM-FEG images, Keithley 2400 sourcemeter for J–V curves.

4：Experimental Procedures and Operational Workflow

The synthesis of PAni and PoMA involved oxidative polymerization. Device fabrication included cleaning and treating FTO substrates, depositing TiO2 layers, perovskite layer, and HTM layers, followed by thermal deposition of metal contacts. Characterization included IR, UV–vis, XRD, Hall effect, CV, SEM, and J–V measurements.

5：Data Analysis Methods

The performance of the solar cells was evaluated based on photovoltaic parameters obtained from J–V curves. Electrochemical impedance spectroscopy (EIS) was used to analyze the charge transport and recombination processes in the devices.