Next generation electronics on the ultrawide-bandgap aluminum nitride platform

AL Hickman, R Chaudhuri, SJ Bader… - Semiconductor …, 2021 - iopscience.iop.org
Gallium nitride high-electron-mobility transistors (GaN HEMTs) are at a point of rapid growth
in defense (radar, SATCOM) and commercial (5G and beyond) industries. This growth also …

Very High Density (>1014 cm−2) Polarization‐Induced 2D Hole Gases Observed in Undoped Pseudomorphic InGaN/AlN Heterostructures

R Chaudhuri, Z Zhang, HG Xing… - Advanced Electronic …, 2022 - Wiley Online Library
High hole densities are desired in p‐channel field effect transistors to improve the speed
and on‐currents. Building on the recently discovered undoped, polarization‐induced …

High density polarization-induced 2D hole gas enabled by elevating Al composition in GaN/AlGaN heterostructures

P Shao, X Fan, S Li, S Chen, H Zhou, H Liu… - Applied Physics …, 2023 - pubs.aip.org
A two-dimensional hole gas (2DHG) induced by polarization charges at the GaN/AlGaN
hetero-interface is attracting much attention because of its potential to develop p-channel …

Hole mobility enhancement mechanism of Wurtzite GaN/AlN heterojunction quantum well under tensile and compressive stresses

X Li, Y Liu, J Wang, E Wang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The hole mobility enhancement mechanism of wurtzite (0001)-oriented gallium nitride
(GaN)/AlN heterojunction quantum well (QW) under stress engineering is investigated to …

Demonstration of controllable Si doping in N-polar AlN using plasma-assisted molecular beam epitaxy

MI Khan, C Lee, E Ahmadi - Applied Physics Letters, 2024 - pubs.aip.org
In this study, we present the demonstration of controllable Si doping in N-polar AlN films
grown on single-crystal AlN substrates by plasma-assisted molecular beam epitaxy …

Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings

P Gopalan, Y Wang, B Sensale-Rodriguez - Scientific Reports, 2021 - nature.com
While terahertz spectroscopy can provide valuable information regarding the charge
transport properties in semiconductors, its application for the characterization of low …

Electric fields and surface fermi level in undoped GaN/AlN two‐dimensional hole gas heterostructures

Ł Janicki, R Chaudhuri, SJ Bader… - physica status solidi …, 2021 - Wiley Online Library
Undoped GaN/AlN heterostructures with a high‐density 2D hole gas (2DHG) have recently
been reported, demonstrating that holes can be generated in GaN without magnesium (Mg) …

Tuning interfacial thermal conductance of GaN/AlN heterostructure nanowires by constructing core/shell structure

X Ren, CW Wu, SY Li, ZX Xie… - Journal of Physics …, 2023 - iopscience.iop.org
The ability to tune the interfacial thermal conductance of GaN/AlN heterojunction nanowires
(NWs) with a core/shell structure is shown using molecular dynamics and non-equilibrium …

[HTML][HTML] Quantitative scanning microwave microscopy of 2D electron and hole gases in AlN/GaN heterostructures

X Wang, G Fabi, R Chaudhuri, A Hickman… - Applied Physics …, 2022 - pubs.aip.org
Although the scanning microwave microscope (SMM) is based on the atomic force
microscope (AFM), the SMM differs from the AFM by being able to sense subsurface …

Raman spectroscopy as a reliable tool for strain analysis in iii-nitride superlattices

F Maia de Oliveira - 2021 - repositorio.ufscar.br
Since its discovery, the Raman effect has been a great ally in the structural investigation of a
wide variety of materials, from macro to nanoscale. However, despite the remarkable …