• • Channel length reduction to 150 μm increased current density while maintaining leakage control, directly impacting device miniaturization and power efficiency in flexible electronics.
• • Optimal N2200/PMMA concentration ratio of 7/100 mg/mL and annealing at 80 °C for 3 h improved crystallinity and interfacial properties, yielding stable electrical performance with reduced variability.
• • CNN-PSO-BP hybrid model reduced MAE and RMSE by 15.7% and 14.9% for Vth, 10% and 9% for lg(Ion/Ioff), and 13.5% and 9.5% for SS compared to standard CNN, enhancing prediction accuracy for critical OFET parameters.
• • The CNN model achieved R² > 0.9 for all metrics (R² Vth = 0.95, R² SS = 0.96), demonstrating superior predictive capability over BPNN and RF, and enabling reliable high-throughput virtual screening of OFET fabrication parameters.