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Fig. 4 Short-channel 2L-OFET for cutoff frequency measurement.
Short-channel 2L-OFET for cutoff frequency measurement. (A) Schematic image of the fabricated 2L-OFET. (B) Micrograph of the 2L-OFET with a channel length of 3 μm. (C) Transfer and (D) output properties of the fabricated 2L-OFET with L/W = 3/750 μm. (E) Schematic diagram of the setup for the cutoff frequency measurement. (F) Estimation of the cutoff frequency of the 2L-OFET. Gain is defined as 20 log(ΔID/ΔIG), where ΔIG and ΔID are the amplitudes of the output gate and drain currents, respectively. The cutoff frequency is extracted from the frequency of the gain equal to zero. Akifumi Yamamura et al. Sci Adv 2018;4:eaao5758 Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
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