Fundamentals, progress, and future directions of nitride-based semiconductors and their composites in two-dimensional limit: A first-principles perspective to recent …

D Kecik, A Onen, M Konuk, E Gürbüz, F Ersan… - Applied Physics …, 2018 - pubs.aip.org
Potential applications of bulk GaN and AlN crystals have made possible single and
multilayer allotropes of these III-V compounds to be a focus of interest recently. As of 2005 …

III-nitride short period superlattices for deep UV light emitters

SA Nikishin - Applied Sciences, 2018 - mdpi.com
Featured Application Advanced infrared, visible, and ultraviolet light emitters. Abstract III-
Nitride short period superlattices (SPSLs), whose period does not exceed~ 2 nm (~ 8 …

High breakdown voltage in AlGaN/GaN HEMTs using AlGaN/GaN/AlGaN quantum-well electron-blocking layers

YJ Lee, YC Yao, CY Huang, TY Lin, LL Cheng… - Nanoscale Research …, 2014 - Springer
In this paper, we numerically study an enhancement of breakdown voltage in AlGaN/GaN
high-electron-mobility transistors (HEMTs) by using the AlGaN/GaN/AlGaN quantum-well …

Asymmetrical reciprocal space mapping using X-ray diffraction: a technique for structural characterization of GaN/AlN superlattices

HV Stanchu, AV Kuchuk, M Barchuk, YI Mazur… - …, 2017 - pubs.rsc.org
A new approach is described that is applicable for structural characterization of any
heteroepitaxially grown (strained or relaxed) III-nitride superlattices (SLs). The proposed …

Strain-compensated InGaAsP superlattices for defect reduction of InP grown on exact-oriented (001) patterned Si substrates by metal organic chemical vapor …

L Megalini, ST Šuran Brunelli, WO Charles, A Taylor… - Materials, 2018 - mdpi.com
We report on the use of InGaAsP strain-compensated superlattices (SC-SLs) as a technique
to reduce the defect density of Indium Phosphide (InP) grown on silicon (InP-on-Si) by Metal …

Local strain and crystalline defects in GaN/AlGaN/GaN (0001) heterostructures induced by compositionally graded AlGaN buried layers

HV Stanchu, AV Kuchuk, YI Mazur, C Li… - Crystal Growth & …, 2018 - ACS Publications
Plastic strain relaxation in epitaxial layers is one of the crucial factors that limits the
performance of III-nitride-based heterostructures. In this work, we report on strain relaxation …

Dominant influence of interface roughness scattering on the performance of GaN terahertz quantum cascade lasers

J Cheng, P Quach, D Wang, F Liu, S Liu, L Yang… - Nanoscale research …, 2019 - Springer
Abstract Effect of interface roughness of quantum wells, non-intentional doping, and alloy
disorder on performance of GaN-based terahertz quantum cascade lasers (QCL) has been …

Nanoscale Electrostructural Characterization of Compositionally Graded AlxGa1–xN Heterostructures on GaN/Sapphire (0001) Substrate

AV Kuchuk, PM Lytvyn, C Li, HV Stanchu… - … applied materials & …, 2015 - ACS Publications
We report on Al x Ga1–x N heterostructures resulting from the coherent growth of a positive
then a negative gradient of the Al concentration on a [0001]-oriented GaN substrate. These …

Measuring the depth profiles of strain/composition in AlGaN-graded layer by high-resolution x-ray diffraction

AV Kuchuk, HV Stanchu, C Li, ME Ware… - Journal of Applied …, 2014 - pubs.aip.org
Here, we demonstrate X-ray fitting through kinematical simulations of the intensity profiles of
symmetric reflections for epitaxial compositionally graded layers of AlGaN grown by …

Arrangement of GaN nanowires on Si (001) substrates studied by X-ray diffraction: Importance of silicon nitride interlayer

A Wierzbicka, G Tchutchulashvili, M Sobanska… - Applied Surface …, 2017 - Elsevier
X-ray diffraction measurements with the use of both laboratory and synchrotron X-ray
sources and transmission electron microscopy have been applied to study two types of GaN …