Ultrahigh Vacuum Annealing of Atomic-Layer-Deposited Y2O3/GaAs in Perfecting Heterostructural Chemical Bonding for Effective Passivation

WS Chen, KY Lin, YHG Lin, HW Wan… - ACS Applied …, 2023 - ACS Publications
Direct deposition of high-dielectric-constant oxides on high-mobility semiconductors with low
trap densities is the key to high-performance metal–oxide–semiconductor (MOS) devices …

In situ Y2O3 on p-In0. 53Ga0. 47As—Attainment of low interfacial trap density and thermal stability at high temperatures

YHG Lin, HW Wan, LB Young, J Liu, YT Cheng… - Applied Physics …, 2021 - pubs.aip.org
By in situ depositing Y 2 O 3 on a pristine p-In 0.53 Ga 0.47 As surface under ultra-high
vacuum, we have attained a low interfacial trap density (D it) of (2–5)× 10 11 eV− 1 cm− 2 …

Electrically sign-reversible topological Hall effect in a top-gated topological insulator grown on europium iron garnet

JF Wong, KHM Chen, JM Chia, ZP Huang, SX Wang… - Physical Review B, 2024 - APS
The topological Hall effect (THE), an electrical transport signature of systems with chiral spin
textures like skyrmions, has been observed recently in topological insulator (TI)-based …

Attainment of low subthreshold slope in planar inversion-channel InGaAs MOSFET with in situ deposited Al2O3/Y2O3 as a gate dielectric

LB Young, J Liu, YHG Lin, HW Wan… - Japanese Journal of …, 2022 - iopscience.iop.org
We have demonstrated a record low 85 mV dec− 1 subthreshold slope (SS) at 300 K among
the planar inversion-channel InGaAs metal-oxide-semiconductor field-effect transistors …

Low-Temperature-Grown Single-Crystal Si Epitaxially on Ge, Followed by Direct Deposition of High-κ Dielectrics–Attainment of Low Interfacial Traps and Highly …

HW Wan, YJ Hong, YT Cheng, CK Cheng… - ACS Applied …, 2021 - ACS Publications
Single-crystal silicon (Si) of six monolayer thickness was epitaxially grown on epi-
germanium (Ge) in the (001) orientation at substrate temperatures lower than 300° C …

Effective passivation of p-and n-type In0. 53Ga0. 47As in achieving low leakage current, low interfacial traps, and low border traps

YHG Lin, HW Wan, LB Young, KH Lai, J Liu… - Journal of Applied …, 2024 - pubs.aip.org
We have attained low leakage current, low interfacial traps, and low border traps by
effectively passivating both p-and n-In0. 53Ga0. 47As (InGaAs) surfaces using the same …

[HTML][HTML] Nanometer-thick molecular beam epitaxy Al films capped with in situ deposited Al2O3—High-crystallinity, morphology, and superconductivity

YHG Lin, CK Cheng, LB Young, LS Chiang… - Journal of Applied …, 2024 - pubs.aip.org
Achieving high material perfection in aluminum (Al) films and their associated Al/AlO x
heterostructures is essential for enhancing the coherence time in superconducting quantum …

Low-temperature grown single-crystal Si on epi Ge (001)-2× 1 and its oxidation: Electronic structure study via synchrotron radiation photoemission

YT Cheng, HW Wan, CK Cheng, CP Cheng… - Applied Physics …, 2020 - iopscience.iop.org
The capped Si expels completely the Ge dimers on top of the epi Ge (001)-2× 1 and exhibits
a multiphase electronic structure consisting of strained surface atoms bonded with Ge in the …

Surface electronic structure of Si1− xGex (001)-2× 1: A synchrotron radiation photoemission study

YT Cheng, HW Wan, CK Cheng, CP Cheng… - Applied Physics …, 2020 - iopscience.iop.org
By using synchrotron radiation photoemission, this study investigates the room-temperature
surface electronic structure of Si 1− x Ge x (001)-2× 1 grown by molecular-beam epitaxy on …

In-situ deposited HfO2 and Y2O3 on epi-Si/p-Ge—A comparative study of the interfacial properties and reliability

TY Chu, HW Wan, YT Cheng, CK Cheng… - Japanese Journal of …, 2022 - iopscience.iop.org
Single-crystal Si films six-monolayers in thickness were epitaxially grown on Ge (001)
surface to minimize the formation of undesirable GeO x with subsequent deposition of HfO 2 …