Efficient low-loss InGaAsP/Si hybrid MOS optical modulator

JH Han, F Boeuf, J Fujikata, S Takahashi, S Takagi… - Nature …, 2017 - nature.com
An optical modulator integrated on silicon is a key enabler for high-performance optical
interconnects,,,,,. However, Si-based optical modulators suffer from low phase-modulation …

III–V/Si hybrid MOS optical phase shifter for Si photonic integrated circuits

M Takenaka, JH Han, F Boeuf, JK Park, Q Li… - Journal of Lightwave …, 2019 - opg.optica.org
We present a novel optical phase modulation scheme on a Si photonic platform that uses a
III–V/Si hybrid metal–oxide–semiconductor (MOS) capacitor formed by bonding an n-type …

Ultra-power-efficient 2× 2 Si Mach-Zehnder interferometer optical switch based on III-V/Si hybrid MOS phase shifter

Q Li, JH Han, CP Ho, S Takagi, M Takenaka - Optics express, 2018 - opg.optica.org
We have demonstrated an ultra-power-efficient 2× 2 Si Mach–Zehnder interferometer optical
switch with III-V/Si hybrid metal-oxide-semiconductor (MOS) phase shifters. The efficient low …

Promoting the photocatalytic activity of Bi 4 Ti 3 O 12 microspheres by incorporating iron

Z Liu, Z Ma - RSC advances, 2020 - pubs.rsc.org
Small amounts of Fe (NO3) 3 were added to the synthesis mixture prior to the hydrothermal
synthesis of Bi4Ti3O12 microspheres. The physicochemical properties of the resulting …

Modulation bandwidth improvement of III-V/Si hybrid MOS optical modulator by reducing parasitic capacitance

H Tang, Q Li, CP Ho, J Fujikata, M Noguchi… - Optics …, 2022 - opg.optica.org
In this work, we numerically and experimentally examined the impact of parasitic
capacitance on the modulation bandwidth of a III-V/Si hybrid metal-oxide-semiconductor …

High-responsivity InAs quantum well photo-FET integrated on Si substrates for extended-range short-wave infrared photodetector applications

DH Ahn, S Jeon, H Suh, S Woo, RJ Chu, D Jung… - Photonics …, 2023 - opg.optica.org
Low-intensity light detection necessitates high-responsivity photodetectors. To achieve this,
we report In_0. 53Ga_0. 47As/InAs/In_0. 53Ga_0. 47As quantum well (InAs QW) photo-field …

Energy-Efficient III–V Tunnel FET-Based Synaptic Device with Enhanced Charge Trapping Ability Utilizing Both Hot Hole and Hot Electron Injections for Analog …

DH Ahn, S Hu, K Ko, D Park, H Suh… - … Applied Materials & …, 2022 - ACS Publications
A charge trap device based on field-effect transistors (FET) is a promising candidate for
artificial synapses because of its high reliability and mature fabrication technology. However …

Heterogeneous CMOS photonics based on SiGe/Ge and III–V semiconductors integrated on Si platform

M Takenaka, Y Kim, J Han, J Kang… - IEEE Journal of …, 2017 - ieeexplore.ieee.org
The heterogeneous integration of SiGe, Ge, and III-V semiconductors on Si provides many
opportunities to develop high-performance photonic integrated circuits through …

Octahedral distortion and oxygen vacancies induced band-gap narrowing and enhanced visible light absorption of Co/Fe co-doped Bi3. 25Nd0. 75Ti3O12 …

MS Alkathy, FL Zabotto, MH Lente… - Journal of Physics D …, 2020 - iopscience.iop.org
Reducing bandgap energy in ferroelectric materials has become an important commitment
to improve the performance of the photovoltaic solar cell. This study reports the effect of the …

Influence of transition metal doping (X= Mn, Fe, Co, Ni) on the structure and bandgap of ferroelectric Bi3. 15Nd0. 85Ti2X1O12

X Chen, F Huang, Z Lu, Y Xue, J Min, J Li… - Journal of Physics D …, 2017 - iopscience.iop.org
Although the internal field can effectively maintain the separation between photo-excited
charge carriers, the wide bandgap restrains ferroelectric materials from visible light …