Abstract
The microwave performance of a diamond metal-semiconductor field-effect transistor (MESFET) is reported for the first time. MESFETs with a gate length of 2-3 μm and a source-gate spacing of 0.1 μm were fabricated on the hydrogen-terminated surface of an undoped diamond film grown by microwave plasma chemical vapor deposition (CVD) utilizing a self-aligned gate fabrication process. A maximum transconductance of 70 mS/mm was obtained on a 2 μm gate MESFET at VGS = -1.5 V and VDS = -5 V, for which a cutoff frequency fT and a maximum oscillating frequency fmax of 2.2 GHz and 7 GHz were obtained, respectively.
Original language | English |
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Pages (from-to) | 390-392 |
Number of pages | 3 |
Journal | IEEE Electron Device Letters |
Volume | 22 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2001 Aug |
Keywords
- Diamond
- Hydrogen-terminated surface
- MESFET
- ff
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering