1.2 kV reverse blocking Schottky-drain Si–GaN monolithic integrated cascode FET
2021
In this work, a novel reverse blocking Schottky-drain Si–GaN monolithic integrated cascode FET was realized for the first time by using transfer printing and self-aligned etching technology. The threshold voltage is up to 4.5 V, which meets the needs of the power electronic system. The on-resistance is 57.1 Ω mm, and the on-voltage is 1.1 V. The forward/reverse breakdown voltage (at 10 µA/mm) reaches 1325/−1240 V for LGD = 18 µm. The mechanism of reverse blocking is proposed and analyzed from the point of view of circuits. In addition, the correctness of the mechanism is verified by simulation and experiment.
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