Application of 2DHG Diamond p-FET in Cascode With Normally-OFF Operation and a Breakdown Voltage of Over 1.7 kV
2020
Hydrogen-terminated (C-H) diamond has a high current density owing to the 2-D hole gas (2DHG) on its C-H diamond surface. The C-H diamond metal-oxide-semiconductor field-effect transistor (MOSFET) has high-breakdown-voltage characteristics but exhibits normally-ON operation. For security and energy-saving purposes, we fabricated the diamond cascode using the C-H diamond p-channel field-effect transistor (p-FET) combination with the normally- OFF silicon p-FET. The diamond cascode exhibits normally- OFF characteristics and a high breakdown voltage of more than 1.7-kV.
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