Figure 4
From: Scalable Sub-micron Patterning of Organic Materials Toward High Density Soft Electronics
Flexible OTFT-based integrated circuits with low power consumption.
(a) Electrical characteristics of an inverter based on P-29-DPPDTSE OTFTs after DUV isolation, highlighting the change in the input current (Iin). (b) Plot of oscillation frequency and per stage propagation delay of 7-stage ring oscillator fabricated on a 3-μm-thick PI film as a function of supply voltage (VDD). (c) and (d) Output waveforms of the ring oscillator operating from supply voltages of −3 V and −20 V, exhibiting 0.244 kHz and 7.21 kHz, respectively. (e) Photograph and OM images of OTFT-based flexible integrated circuits that conformably wraps around the steel rod (R = 1 mm). The dashed white boxes in (a) and (e) indicate the chrome patterns of photomask protecting the active region during DUV exposure.
