Ultrafast terahertz self-induced absorption and phase modulation on a graphene-based thin film absorber

AD Koulouklidis, AC Tasolamprou, S Doukas… - ACS …, 2022 - ACS Publications
Interaction of intense terahertz (THz) waves with graphene based modulation devices holds
great potential for the optoelectronic applications of the future. Here, we present a thin film …

Localized surface plasmon resonance enables Si-based near-infrared photodetector

G Zhang, S Zhang, L Zheng, H Wu… - … on Electron Devices, 2023 - ieeexplore.ieee.org
Compared with silicon (Si), 2D-graphene is a promising candidate for broadband
photodetection. However, its flat surface and extremely low light absorption properties …

Guiding charge injection in Schottky-barrier transistors through the spatial Fermi-level gradients of heterogeneous bimetallic systems

MJ Kim, WS Kim, CH Kim, JH Kwon… - Journal of Materials …, 2023 - pubs.rsc.org
A heterogeneous bimetallic system (HBS), composed of two metallic thin films with
inherently different Fermi levels, is potentially usable for the fine tuning of interfacial charge …

[HTML][HTML] Electrical detection of graphene plasmons for mid-infrared photodetection and chemical sensing: A computational study

S Doukas, P Sharma, I Goykhman… - Applied Physics Letters, 2022 - pubs.aip.org
Electrical detection of graphene plasmons is important for developing mid-infrared
photodetection and sensing applications based on graphene. Here, we theoretically …

Two-Step Relaxation of Non-Equilibrium Electrons in Graphene: The Key to Understanding Pump–Probe Experiments

DFP Cunha, R Dias, MJLF Rodrigues, MI Vasilevskiy - Applied Sciences, 2024 - mdpi.com
In the majority of experiments targeting nonlinear optical phenomena, the application of high-
intensity pulses drives electrons in graphene into a strongly non-equilibrium state. Under …

Photodetection properties of graphene/silicon van der Waals heterojunction

S Gupta, R Kumar - ECS Journal of Solid State Science and …, 2022 - iopscience.iop.org
The integration of graphene with the bulk semiconductor leads to the formation of van der
Waals heterojunction exhibiting distinctive electrical and optical properties which can …

Ultrafast pulse propagation in graphene-comprising nanophotonic waveguides considering nonperturbative electrodynamic nonlinearity

A Pitilakis, EE Kriezis - JOSA B, 2022 - opg.optica.org
We outline a comprehensive model for ultrafast optical pulse propagation along nonlinear
graphene-comprising integrated photonic waveguides. An electrodynamic graphene hot …

Bilayer graphene/HgCdTe heterojunction based novel GBn infrared detectors

S Bansal, A Das, K Prakash, K Sharma… - Micro and …, 2022 - Elsevier
This paper presents different configurations of bilayer graphene (BLG)/mercury cadmium
telluride (Hg 1–x Cd x Te) based GBn detectors operating in the mid-and long-wave infrared …

Enhanced photovoltaic effect in graphene–silicon Schottky junction under mechanical manipulation

D Pu, MA Anwar, J Zhou, R Mao, X Pan, J Chai… - Applied Physics …, 2023 - pubs.aip.org
A graphene–silicon Schottky junction (GSJ), which has potentials of large-scale
manufacturing and integration, can bring new opportunities to Schottky solar cells for …

A self-consistent simulation framework for modelling graphene-based optoelectronics in the THz regime

S Doukas, AD Koulouklidis, S Tzortzakis… - … on Artificial Materials …, 2024 - ieeexplore.ieee.org
We present a self-consistent multiphysics simulation framework for modelling graphene
optoelectronic response in the THz regime. Our model accounts for realistic graphene …