Fig. 5: Stretchable all-gel OECT gas sensors based on PEDOT:PSS gel active layer.
From: Stretchable all-gel organic electrochemical transistors
a Mechanism diagram of gas sensing of all-gel OECT. Schematic of human body is created in BioRender. Lu, L. (2025) https://BioRender.com/8l76b8o. b The continuous response of all-gel OECT to NH3 with different concentrations. c Response of all-gel OECT versus NH3 concentration. d Response of all-gel OECT upon exposure to 1 and 100 ppm NH3 for the same duration time of 5 s. e Response of all-gel OECT to 200 ppm NH3. f Selectivity of all-gel OECT gas sensor. g Response of all-gel OECT to different concentrations of NH3 before and after stretching with 30% strain. h Comparison of detection limit, stretchability, selectivity, stretching stability, and bendability of our OECT gas sensor and the previously reported OECT gas sensors33,34,35. i Response of all-gel OECT to rotten pork. j Schematic illustration of olfactory synapse based on all-gel OECT. k Drain current change induced by 100 ppm NH3 pulse with different pulse duration. l PPF behavior induced by a pair of 100 ppm NH3 pulses with a pulse width of 15 s and a pulse interval of 150 s. m Drain current change induced by 3 consecutive 100 ppm NH3 pulses. Source data are provided as a Source Data file.
