2024
DOI: 10.1002/advs.202410519
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Ternary Logic Transistors Using Multi‐Stacked 2D Electron Gas Channels in Ultrathin Oxide Heterostructures

Ji Hyeon Choi,
Tae Jun Seok,
Sang June Kim
et al.

Abstract: Abstract2D electron gas field‐effect transistors (2DEG‐FETs), employing 2DEG formed at an interface of ultrathin (≈6 nm) Al2O3/ZnO heterostructure as the active channel, exhibit outstanding drive current (≈215 µA), subthreshold swing (≈132 mV dec−1), and field effect mobility (≈49.6 cm2 V−1 s−1) with a high on/off current ratio of ≈107. It is demonstrated that the Al2O3 upper layer in Al2O3/ZnO heterostructure acts as the source/drain resistance component during transistor operations, and the applied potential… Show more

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