Advances in memristor-based neural networks

W Xu, J Wang, X Yan - Frontiers in Nanotechnology, 2021 - frontiersin.org
The rapid development of artificial intelligence (AI), big data analytics, cloud computing, and
Internet of Things applications expect the emerging memristor devices and their hardware …

Novel III-V semiconductor epitaxy for optoelectronic devices through two-dimensional materials

C Zhao, Z Li, T Tang, J Sun, W Zhan, B Xu… - Progress in Quantum …, 2021 - Elsevier
III-V semiconductor materials are the basis of photonic devices due to their unique optical
properties. There is an increasing demand for fabricating these devices on unconventional …

Growth of bulk single crystal ScAlMgO4 boules and GaN films on ScAlMgO4 substrates for GaN-based optical devices, high-power and high-frequency transistors

T Fukuda, Y Shiraishi, T Nanto, T Fujii… - Journal of Crystal …, 2021 - Elsevier
Single crystal growth of ScAlMgO 4 boules with 10 mm up to 4 in.(ca 101.6 mm) in diameter
by Czochralski technique was demonstrated. Some high quality ScAlMgO 4 single crystal …

Promotion of lateral growth of GaN crystals on point seeds by extraction of substrates from melt in the Na-flux method

M Imanishi, K Murakami, T Yamada… - Applied Physics …, 2019 - iopscience.iop.org
In a previous study, we successfully obtained large-diameter, low-dislocation-density GaN
wafer using the Na-flux multi-point seed (MPS) technique. However, the lattice constants of …

GaN substrates having a low dislocation density and a small off-angle variation prepared by hydride vapor phase epitaxy and maskless-3D

T Yoshida, M Shibata - Japanese Journal of Applied Physics, 2020 - iopscience.iop.org
To produce high-quality GaN (0001) substrates with a low threading dislocation density
(TDD) and a small off-angle variation, we have developed a technique named the" maskless …

Smart-cut-like laser slicing of GaN substrate using its own nitrogen

A Tanaka, R Sugiura, D Kawaguchi, T Yui, Y Wani… - Scientific Reports, 2021 - nature.com
We have investigated the possibility of applying lasers to slice GaN substrates. Using a sub-
nanosecond laser with a wavelength of 532 nm, we succeeded in slicing GaN substrates. In …

Toward high‐performance diamond electronics: Control and annihilation of dislocation propagation by metal‐assisted termination

S Ohmagari, H Yamada, N Tsubouchi… - … status solidi (a), 2019 - Wiley Online Library
A major obstacle limiting diamond electronics is dislocations, which deteriorate device
properties. As threading dislocations (TDs) are normally inherited from the substrate to the …

Correlation between nanopipes formed from screw dislocations during homoepitaxial growth by metal-organic vapor-phase epitaxy and reverse leakage current in …

S Usami, A Tanaka, H Fukushima, Y Ando… - Japanese Journal of …, 2019 - iopscience.iop.org
We fabricated p− n diodes under different growth pressures on free-standing GaN substrates
of the same quality and observed a noteworthy difference in the reverse leakage current. A …

Vertical GaN-on-GaN Schottky diodes as α-particle radiation sensors

A Sandupatla, S Arulkumaran, NG Ing, S Nitta… - Micromachines, 2020 - mdpi.com
Among the different semiconductors, GaN provides advantages over Si, SiC and GaAs in
radiation hardness, resulting in researchers exploring the development of GaN-based …

Site control of quantum emitters in gallium nitride by polarity

MAP Nguyen, J Hite, MA Mastro, M Kianinia… - Applied Physics …, 2021 - pubs.aip.org
Gallium nitride (GaN) is a promising platform for integrated nanophotonic circuitry due to
highly versatile growth protocols for the material. With the discovery of quantum emitters …