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Normally-Off Diamond Junction Field-Effect Transistors With Submicrometer Channel

MetadataDetails
Publication Date2015-12-29
JournalIEEE Electron Device Letters
AuthorsTaisuke Suwa, Takayuki Iwasaki, Kazuki Sato, Hiromitsu Kato, Toshiharu Makino
InstitutionsTokyo Institute of Technology, National Institute of Advanced Industrial Science and Technology
Citations41

We developed normally-off diamond junction field-effect transistors with narrow channel widths. The p-channel device with the narrowest channel width of 0.26 μm showed a large threshold voltage of -3 V. The obtained threshold voltage is consistent with the value estimated by considering the tapered channel width and the gradual-doping in the channel, which were measured by secondary ion mass spectrometry and cross-sectional transmission electron microscopy. We confirmed that the threshold voltage can be well controlled by the channel width.