Fig. 2: LI-assisted transient behaviors of OECTs with stripe films.
a Transient response measurement of drain-current response at a constant VDS of –0.3 V and a gate voltage pulse for OECT devices with a 100 (black circle) and 2 μm (red triangle) stripe-patterned structure. The pulse VGS is –1.2 V and the inset graphs highlights the initial diffusion times, tdiff. The dots and solid line represent corresponding experimental data and fitting line, respectively. b the ratio of maximum transconductance and transient response time as a function of the RoL. Error bars represent standard deviations from the mean (n = 5). c Comparison of normalized transient response time for the OECTs with LI-assisted ionic migration (P3HT films patterned with diverse RoL) as well as the previously reported OECTs based on P3HT films20,38,39,40,41. Shading in this panel labels the results obtained in this work. d The relationship between amplitude and the RoL at different sin wave stimulation (VDS = –0.3 V). Square, triangle, and circle symbols represent the data points for 100 Hz, 10 Hz, and 1 Hz respectively. The data are fitted with an exponential decay function for each frequency. Dashed lines indicate the 90% threshold of the maximum amplitude, above which signals are considered to be distinguished. The channel dimension of W/L = 100 μm/10 μm and thickness d = 1 μm.
