Abstract
Lateral reduced surface field (RESURF) metal-oxide-semiconductor field-effect transistors (MOSFETs) have been fabricated on 4H-SiC(0001/sup ~/) carbon face (C-face) substrates. The channel mobility of a lateral test MOSFET on a C-face was 41 cm/sup 2//V/spl middot/s, which was much higher than 5 cm/sup 2//V/spl middot/s for that on a Si-face. The specific on-resistance of the lateral RESURF MOSFET on a C-face was 79/spl Omega/ /spl middot/ cm/sup 2/, at a gate voltage of 25 V and drain voltage of 1 V. The breakdown voltage was 460 V, which was 79% of the designed breakdown voltage of 600 V. We measured the temperature dependence of R/sub on, sp/ for the RESURF MOSFET on the C-face. The R/sub on, sp/ increased with the increase in temperature.
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