Extensive research has been conducted on wide-bandgap semiconductor diamond for the advancement of high-power
high-frequency
and high-temperature electronic devices. The author has established long-term collaboration with Prof. Koide
focusing on producing
p
-type hydrogen-terminated diamond (H-diamond) and boron-doped oxygen-terminated diamond (O-diamond) based metal-oxide-semiconductor field-effect transistors (MOSFETs). This article presents our primary research findings on the fabrication of enhancement-mode H-diamond MOSFETs and MOSFET logic circuits
as well as the high-temperature operation of the boron-doped O-diamond MOSFETs.