Abstract
This paper presents SiC CVD epitaxy for MESFET fabrication in a horizontal hot-wall reactor with gas foil rotation. Excellent uniformity of < 2% for thickness and < 10% for doping has been routinely obtained for both 3x2-in. and 1x3-in. growth. The highly uniform epitaxy is maintained for the growth of a large range of doping concentrations (less than 5x1015 to greater than 1.5x1019 cm-3) and thicknesses (0.25 – 60 μm). MESFET buffer/channel structure has been characterized with SIMS measurement showing sharp interface transition. Pinch-off voltages are extracted from CV measurements over a full 2-in. wafer.
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