Abstract
This report describes the first to fabricate GaN p-n junction diodes on free-standing GaN substrates with a 3mm diameter. For the diode of 3 mm in diameter, the specific on-resistance and the breakdown voltage were 124 mΩ•cm2 (at 4.0 V) and -450 V, respectively. Consequently, combination of our material and device processing revealed a record fabricated device size with a high breakdown voltage and low forward leakage current in GaN vertical diodes.
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