S2–2 Back-Bias Reconfigurable Field Effect Transistor: A Flexible Add-On Functionality for 22 nm FDSOI
2021
Here we present a highly scalable reconfigurable field effect transistor concept, which is capable of dynamically switching between p-type, n-type, and ambipolar operation modes by adaptively changing the applied back-bias. The devices are processed on full-scale 300 mm wafers and reach gate lengths down to 20 nm, integrable into a 22 nm FDSOI platform with only minor process modifications. We demonstrate symmetric IV characteristics of p- and n-program with $I_{ON}/I_{OFF}$ ratio up to 103 at a $V_{DD}$ of 0.8 V, and propose an exploitation in hardware security. In ambipolar mode, frequency multiplication requiring only a single transistor is experimentally demonstrated.
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