Journal
2020 IEEE INTERNATIONAL ELECTRON DEVICES MEETING (IEDM)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/IEDM13553.2020.9371963
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Funding
- Intel Corp. [027196-00001]
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This work demonstrates a p-MOSFET with a GaN/Al0.2Ga0.8N (20 nm)/GaN heterostructure grown by metal-organic-chemical vapor deposition (MOCVD) on 6-inch Si substrate with optimized self-aligned process. Devices with source-to-drain distance, L SD , varying from 1 mu m down to 200 nm were fabricated. Significant field-induced acceptor ionization was found in these devices at high drain voltages. The device with L-SD =200 nm shows a record combination of I-ON of similar to 45 mA/mm and ON-OFF ratio of similar to 10(4) when compared with other p-channel transistor demonstrations. The device also exhibits Enhancement-mode operation with threshold voltage of -0.5V. The best device shows an ON-current of 100 mA/mm but at the expense of lower on-off ratio of similar to 10(2) .
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