Results 61 to 70 of about 140,358 (312)

Porous Si-SiO₂ UV Microcavities to Modulate the Responsivity of a Broadband Photodetector

Nanomaterials, 2020
Porous Si-SiO2 UV microcavities are used to modulate a broad responsivity photodetector (GVGR-T10GD) with a detection range from 300 to 510 nm. The UV microcavity filters modified the responsivity at short wavelengths, while in the visible range the ...
María R. Jimenéz-Vivanco, Godofredo García, Jesús Carrillo, Francisco Morales-Morales, Antonio Coyopol, Miguel Gracia, Rafael Doti, Jocelyn Faubert, J. Eduardo Lugo   +8 more
doaj   +1 more source

Enhanced Photodetection in Graphene-Integrated Photonic Crystal Cavity

, 2013
We demonstrate the controlled enhancement of photoresponsivity in a graphene photodetector by coupling to slow light modes in a long photonic crystal linear defect cavity.
Englund, Dirk, Gan, Xuetao, Gao, Yuanda, Hone, James, Li, Luozhou, Shiue, Ren-Jye, Szep, Attila, Walker, Jr., Dennis, Yao, Xinwen   +8 more
core   +1 more source

High-performance near-infrared photodetector based on nano-layered MoSe2 [PDF]

, 2017
In recent years, the integration of two-dimensional (2D) nanomaterials, especially transition metal chalcogendies (TMCs) and dichalcogendies (TMDCs), into electronic devices have been extensively studied owing to their exceptional physical properties ...
Abdelkader Abderrahmane, Adarsh Sandhu, Nam–Hoon Kim, Pil Ju Ko   +3 more
core   +2 more sources

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

Advanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang, Xingyue Yang, Zongmeng Yang, Jing Lu, Pin Ho, Wenhong Wang, Yee Sin Ang, Zhenxiang Cheng, Shibo Fang   +8 more
wiley   +1 more source

High-Responsivity Unitraveling Carrier–Type Photodetector Using Avalanche InAlAs as a Collector at a High-Frequency Range

IEEE Access
In this study, we proposed a novel design for fabricating a unitraveling carrier–type photodetector using In0.52Al0.48As as the collector material. The proposed InAlAs photodetector is based on the structure of a conventional unitraveling carrier&#
Yaofeng Yi, Toshimasa Umezawa, Kouichi Akahane, Tetsuya Kawanishi   +3 more
doaj   +1 more source

Integrated filter and detector array for spectral imaging [PDF]

, 1992
A spectral imaging system having an integrated filter and photodetector array is disclosed. The filter has narrow transmission bands which vary in frequency along the photodetector array.
Labaw, Clayton C.
core   +1 more source

MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]

, 2009
In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
E. Leitgeb, E.J. Lee, G.R. Osche, H. Willebrand, I.B. Djordjevic, J. Li, M. Razavi, M. Uysal, R.L. Mitchell, R.M. Gagliardi, S. Karp, W.O. Popoola, X. Zhu   +12 more
core   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

Voltage-Tunable Mid- and Long-Wavelength Dual-Band Infrared Photodetector Based on Hybrid Self-Assembled and Sub-Monolayer Quantum Dots

Micromachines, 2018
In this paper, we report a mid-wave infrared (MWIR) and long-wave infrared (LWIR) dual-band photodetector capable of voltage-controllable detection band selection.
Yao Zhai, Guiru Gu, Xuejun Lu
doaj   +1 more source

Enhanced Performance of Single-Walled Carbon Nanotube-Germanium Near-Infrared Photodetector by Doping with Au Nanoparticles

Photonics, 2022
This paper presents a near-infrared (near-IR) photodetector based on a gold nanoparticles-doped (AuNPs-doped), single-walled carbon nanotube–germanium (SWCNT/Ge) heterojunction.
Tao Qi, Yaolun Yu, Junku Liu, Yi Jia, Dazhi Ding   +4 more
doaj   +1 more source