Ultrawide‐bandgap semiconductors: research opportunities and challenges

JY Tsao, S Chowdhury, MA Hollis… - Advanced Electronic …, 2018 - Wiley Online Library
Abstract Ultrawide‐bandgap (UWBG) semiconductors, with bandgaps significantly wider
than the 3.4 eV of GaN, represent an exciting and challenging new area of research in …

A critical review of thermal boundary conductance across wide and ultrawide bandgap semiconductor interfaces

T Feng, H Zhou, Z Cheng, LS Larkin… - ACS applied materials …, 2023 - ACS Publications
The emergence of wide and ultrawide bandgap semiconductors has revolutionized the
advancement of next-generation power, radio frequency, and opto-electronics, paving the …

Unambiguously enhanced ultraviolet luminescence of AlGaN wavy quantum well structures grown on large misoriented sapphire substrate

H Sun, S Mitra, RC Subedi, Y Zhang… - Advanced Functional …, 2019 - Wiley Online Library
High‐quality epitaxy consisting of Al1− xGaxN/Al1− yGayN multiple quantum wells (MQWs)
with sharp interfaces and emitting at≈ 280 nm is successfully grown on sapphire with a …

The role of surface kinetics on composition and quality of AlGaN

I Bryan, Z Bryan, S Mita, A Rice, L Hussey… - Journal of Crystal …, 2016 - Elsevier
Abstract Metal–polar, Al-rich AlGaN films were grown on both single crystalline AlN and
sapphire substrates. The role of surface morphology and surface kinetics on AlGaN …

Reduction of threading dislocation density and suppression of cracking in sputter-deposited AlN templates annealed at high temperatures

K Uesugi, Y Hayashi, K Shojiki… - Applied Physics …, 2019 - iopscience.iop.org
Combination of sputter deposition and high-temperature annealing is a promising technique
for preparing AlN templates with a low threading dislocation density (TDD) at a lower film …

Status of the growth and fabrication of AlGaN-based UV laser diodes for near and mid-UV wavelength

R Kirste, B Sarkar, P Reddy, Q Guo, R Collazo… - Journal of Materials …, 2021 - Springer
In this article, the development of mid-UV laser diodes based on the AlGaN materials system
is reviewed. The targeted wavelength for these lasers covers the range from 200 to 350 nm …

[HTML][HTML] Exploring miscut angle influence on (100) β-Ga2O3 homoepitaxial films growth: Comparing MOVPE growth with MBE approaches

TS Chou, J Rehm, S Bin Anooz, O Ernst… - Journal of Applied …, 2023 - pubs.aip.org
In this work, we explored the growth regime of (100) β-Ga 2 O 3 homoepitaxial films on
substrates with different miscut angles (1, 2, and 4) in the MOVPE system. Under a low O …

Paving the Way for High‐Performance UVB‐LEDs Through Substrate‐Dominated Strain‐Modulation

T Li, W Luo, S Liu, J Yang, R Tao… - Advanced Functional …, 2023 - Wiley Online Library
AlGaN‐based ultraviolet‐B light‐emitting diodes (UVB‐LEDs) exhibit great potential in
phototherapy, vitamin D3 synthesis promotion, plant growth regulation, and so on. However …

[HTML][HTML] Surface control and MBE growth diagram for homoepitaxy on single-crystal AlN substrates

K Lee, YJ Cho, LJ Schowalter, M Toita, HG Xing… - Applied Physics …, 2020 - pubs.aip.org
The evolution of surface morphology for single-crystal bulk Al-polar aluminum nitride
substrates during ex situ cleaning, in situ cleaning, and subsequent homoepitaxy is …

Four-inch high quality crack-free AlN layer grown on a high-temperature annealed AlN template by MOCVD

S Liu, Y Yuan, S Sheng, T Wang, J Zhang… - Journal of …, 2021 - iopscience.iop.org
In this work, based on physical vapor deposition and high-temperature annealing (HTA), the
4-inch crack-free high-quality AlN template is initialized. Benefiting from the crystal …