• • The CS-PHEA gel electrolyte achieves a Young’s modulus of 114 kPa and elongation at break of 640%, matching skin and muscle tissue (200–500 kPa) to minimize interfacial stress and motion artifacts during continuous electrocardiogram recording.
• • OECT arrays exhibit a [μC*] of 317.71 ± 11.61 F cm⁻¹ V⁻¹ s⁻¹ and average transconductance of 7.89 mS, enabling low-voltage amplification with sufficient gain for electrophysiological signal acquisition in wearable formats.
• • Under 50% tensile strain, the solid-state devices retain stable electrical performance and deliver a signal-to-noise ratio of ~30 dB, satisfying clinical requirements for ambulatory ECG monitoring where mechanical deformation is unavoidable.
• • Photopatterning of the gel electrolyte allows high-uniformity array fabrication, a critical manufacturing advantage for scalable production of high-density OECT-based biosensors with reduced device-to-device variability.