High-performance HZO/InAlN/GaN MISHEMTs for Ka-band application
Abstract
This paper reports on the demonstration of microwave power performance at 30 GHz on InAlN/GaN metal–insulator–semiconductor high electron mobility transistor (MISHEMT) on silicon substrate by using the Hf0.5Zr0.5O2 (HZO) as a gate dielectric. Compared with Schottky gate HEMT, the MISHEMT with a gate length (L G) of 50 nm presents a significantly enhanced performance with an ON/OFF current ratio (I ON/I OFF) of 9.3 × 107, a subthreshold swing of 130 mV dec−1, a low drain-induced barrier lowing of 45 mV V−1, and a breakdown voltage of 35 V. RF characterizations reveal a current gain cutoff frequency (f T) of 155 GHz and a maximum oscillation frequency (f max) of 250 GHz, resulting in high (f T × f max)1/2 of 197 GHz and the record high Johnson’s figure-of-merit (JFOM = f T × BV) of 5.4 THz V among the reported GaN MISHEMTs on Si. The power performance at 30 GHz exhibits a maximum output power of 1.36 W mm−1, a maximum power gain of 12.3 dB, and a peak power-added efficiency of 21%, demonstrating the great potential of HZO/InAlN/GaN MISHEMTs for the Ka-band application.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 01, 2023
- Source ID
- 10.1088/1361-6641/acb2ea
Entities
People
- Hang Chen
- John Xiao
- Kelson D. Chabak
- Neil A. Moser
- Peng Cui
- Yuping Zeng
Organizations
- Air Force Office of Scientific Research
- National Aeronautics and Space Administration