3 papers
physics.app-ph2025
Scaled Ultra-Wide Bandgap AlGaN Polarization-Graded FET with Ultra-thin Buffer Layer
Yinxuan Zhu, Ashley Wissel-Garcia, Kidus Guye +12
We report on the design and demonstration of ultra-wide bandgap AlGaN polarization-graded field effect transistors with ultra-thin channels to enable excellent current density and…
physics.app-ph2025
Ultra-Wide Bandgap AlGaN Heterostructure Field Effect Transistors with Current Gain Cutoff Frequency Above 85 GHz
Yinxuan Zhu, Andrew A. Allerman, Ashley Wissel-Garcia +8
We report the design and demonstration of ultra-wide-bandgap (UWBG) AlGaN polarization-graded field-effect transistors (PolFETs) that achieve a current-gain cutoff frequency above…
physics.app-ph2025
kV-Class Lateral NiOx/GaN Super-Heterojunction Diode via Ammonia Molecular Beam Epitaxy (NH3-MBE)
Yizheng Liu, Zachary J. Biegler, Ashley E. Wissel-Garcia +2
This work reports the demonstration of lateral p-NiOx/p-GaN/n-GaN-based super-heterojunction (SHJ) diodes using p-GaN with additional sputtered p-type nickel oxide (NiOx) layers to…