The emergence and prospects of deep-ultraviolet light-emitting diode technologies

M Kneissl, TY Seong, J Han, H Amano - nature photonics, 2019 - nature.com
Abstract By alloying GaN with AlN the emission of AlGaN light-emitting diodes can be tuned
to cover almost the entire ultraviolet spectral range (210–400 nm), making ultraviolet light …

AlGaN photonics: recent advances in materials and ultraviolet devices

D Li, K Jiang, X Sun, C Guo - Advances in Optics and Photonics, 2018 - opg.optica.org
AlGaN-based materials own direct transition energy bands and wide bandgap and thus can
be used in high-efficiency ultraviolet (UV) emitters and detectors. Over the past two decades …

Polarization-induced do** in graded AlGaN epilayers grown on AlN single crystal substrates

R Dalmau, B Moody - ECS Transactions, 2018 - iopscience.iop.org
Compositionally graded AlxGa1-xN epilayers were coherently grown on AlN single crystal
substrates by MOCVD, and polarization-induced do** was determined by contactless …

[HTML][HTML] Cross-plane thermal conductivity of GaN/AlN superlattices

A Spindlberger, D Kysylychyn, L Thumfart… - Applied Physics …, 2021 - pubs.aip.org
Heterostructures consisting of alternating GaN/AlN epitaxial layers represent the building
blocks of state-of-the-art devices employed for active cooling and energy-saving lightning …

Polarization effects in graded AlGaN nanolayers revealed by current-sensing and Kelvin probe microscopy

PM Lytvyn, AV Kuchuk, YI Mazur, C Li… - … Applied Materials & …, 2018 - ACS Publications
We experimentally demonstrate that the conductivity of graded Al x Ga1–x N increases as a
function of the magnitude of the Al concentration gradient (% Al/nm) due to polarization …

Local structure and ordering of Al atoms in AlxGa1− xN epilayers

A Spindlberger, G Ciatto, R Adhikari, AK Yadav… - Applied Physics …, 2023 - pubs.aip.org
In this study, we investigate the local structure of aluminum (Al) in a comprehensive series of
Al x Ga 1− x N epilayers, where the Al concentration spans from the dilute limit to 100%. We …

Influence of Mn co-do** on the magnetic properties of planar arrays of Ga x Fe 4− x N nanocrystals in a GaN matrix

L Del Bianco, F Spizzo, T Li, R Adhikari… - Physical Chemistry …, 2018 - pubs.rsc.org
Magnetic nanocrystals embedded in a semiconducting matrix are gaining increasing
attention for potential applications in spintronic devices. We report about the magnetic …

Magnetotransport property of graded AlGaN/GaN heterostructure

KH Gao, XR Ma, DB Zhou, S Li, ZQ Li, T Lin… - Superlattices and …, 2019 - Elsevier
This paper reports magnetotransport property of a graded AlGaN/GaN heterostructure.
When temperature (T) is higher than 10 K, resistivity as a function of T exhibits a metallic …

AlGaN-based thin-film ultraviolet laser diodes and light-emitting diodes

H Sun, F Wu, J Dai, C Chen - Semiconductors and Semimetals, 2021 - Elsevier
Wide bandgap semiconductor aluminum gallium nitride (AlGaN) alloys have been identified
as the key materials to build ultraviolet light emitting devices owing to its direct tunable …