Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2221400
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We fabricated inversion-type 4H-SiC p-channel metal-oxide-semiconductor field-effect transistors (MOSFETs). The electrical properties of the p-channel MOSFETs depended on the gate oxidation process. We found that wet oxidation process was effective for improving the channel mobility of the p-channel MOSFET, and obtained the field-effect channel mobility mu(FE) of 15.6 cm(2)/V s by using that process. Measurements of the p-type MOS capacitors implied that the SiO2/SiC interface states around the valence band affected the channel mobility and threshold voltage of the p-channel MOSFETs. We also investigated temperature dependences. (c) 2006 American Institute of Physics.
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