Ferroelectric YAlN grown by molecular beam epitaxy

D Wang, S Mondal, J Liu, M Hu, P Wang… - Applied Physics …, 2023 - pubs.aip.org
We report the demonstration of ferroelectric switching in yttrium (Y)-doped nitride
semiconductors. In this study, single-crystalline, wurtzite Y 0.07 Al 0.93 N films were …

Ferroelectric nitride heterostructures on CMOS compatible molybdenum for synaptic memristors

P Wang, D Wang, S Mondal, M Hu, Y Wu… - ACS Applied Materials …, 2023 - ACS Publications
Achieving ferroelectricity in III-nitride (III-N) semiconductors by alloying with rare-earth
elements, eg, scandium, has presented a pivotal step toward next-generation electronic …

From wide to ultrawide-bandgap semiconductors for high power and high frequency electronic devices

K Woo, Z Bian, M Noshin, RP Martinez… - Journal of Physics …, 2024 - iopscience.iop.org
Wide and ultrawide-bandgap (U/WBG) materials have garnered significant attention within
the semiconductor device community due to their potential to enhance device performance …

Perspectives and progress on wurtzite ferroelectrics: Synthesis, characterization, theory, and device applications

J Casamento, SM Baksa, D Behrendt… - Applied Physics …, 2024 - pubs.aip.org
Wurtzite ferroelectrics are an emerging material class that expands the functionality and
application space of wide bandgap semiconductors. Promising physical properties of binary …

Band alignment and charge carrier transport properties of YAlN/III-nitride heterostructures

D Wang, S Mondal, P Kezer, M Hu, J Liu, Y Wu… - Applied Surface …, 2023 - Elsevier
Incorporating rare earth element scandium (Sc) into III-nitride wurtzite lattice offers
remarkable non-oxide ferroelectrics, tunable spontaneous polarization coefficients, and …

Voltage-margin limiting mechanisms of AlScN-based HEMTs

P Döring, S Krause, P Waltereit, P Brückner… - Applied Physics …, 2023 - pubs.aip.org
In this work, the off-state characteristics of AlScN/GaN high electron mobility transistors
(HEMTs) grown by metalorganic chemical vapor deposition (MOCVD) were studied and …

Pulsed E-/D-mode switchable GaN HEMTs with a ferroelectric AlScN gate dielectric

JY Yang, SY Oh, MJ Yeom, S Kim, G Lee… - IEEE Electron …, 2023 - ieeexplore.ieee.org
In this study, we demonstrate ferroelectric GaN high-electron mobility transistors (HEMTs)
with a sputtered AlScN gate dielectric, exhibiting a large memory window of~ 14.6 V and a …

Controlled ferroelectric switching in ultrawide bandgap AlN/ScAlN multilayers

D Wang, P Wang, S Mondal, J Liu, M Hu, M He… - Applied Physics …, 2023 - pubs.aip.org
Ultrawide bandgap ferroelectric nitride semiconductors have shown promising applications
in electronic, micromechanical, and optical devices. Current studies, however, have largely …

High Quality Epitaxial Piezoelectric and Ferroelectric Wurtzite Al1‐xScxN Thin Films

Y Zeng, Y Lei, Y Wang, M Cheng, L Liao… - Small …, 2024 - Wiley Online Library
Piezoelectric and ferroelectric wurtzite are promising to reshape modern microelectronics
because they can be easily integrated with mainstream semiconductor technology. Sc …

Demonstration and STEM Analysis of Ferroelectric Switching in MOCVD‐Grown Single Crystalline Al0.85Sc0.15N

N Wolff, G Schönweger, I Streicher… - Advanced Physics …, 2024 - Wiley Online Library
Wurtzite‐type Al1− xScxN solid solutions grown by metal organic chemical vapor deposition
are for the first time confirmed to be ferroelectric. The film with 230 nm thickness and x= 0.15 …