Results 21 to 30 of about 272,034 (235)
Selective Enhancement of Photoresponse with Ferroelectric‐Controlled BP/In2Se3 vdW Heterojunction
Advanced Science, 2023 Owing to the large built‐in field for efficient charge separation, heterostructures facilitate the simultaneous realization of a low dark current and high photocurrent.
Jian Wang +13 more
doaj +1 more source
Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks
Nanomaterials, 2021 Fast detection of near-infrared (NIR) photons with high responsivity remains a challenge for photodetectors. Germanium (Ge) photodetectors are widely used for near-infrared wavelengths but suffer from a trade-off between the speed of photodetection and ...
Reza Masoudian Saadabad +5 more
doaj +1 more source
Spectrally Switchable Photodetection with Near-Infrared-Absorbing Covalent Organic Frameworks [PDF]
Journal of the American Chemical Society, 2017 Most covalent organic frameworks (COFs) to date are made from relatively small aromatic subunits, which can only absorb the high-energy part of the visible spectrum. We have developed near-infrared-absorbing low bandgap COFs by incorporating donor-acceptor-type isoindigo- and thienoisoindigo-based building blocks.
Derya Bessinger +3 more
openaire +2 more sources
Near-Infrared Photoresponse in Ge/Si Quantum Dots Enhanced by Photon-Trapping Hole Arrays
Nanomaterials, 2021 Group-IV photonic devices that contain Si and Ge are very attractive due to their compatibility with integrated silicon photonics platforms. Despite the recent progress in fabrication of Ge/Si quantum dot (QD) photodetectors, their low quantum efficiency
Andrew I. Yakimov +4 more
doaj +1 more source
Photonics, 2023 We report on the near-infrared (NIR) photoresponse of a micropatterned Ge/Si quantum dot (QD) pin photodiode at different angles of radiation incidence.
Andrew I. Yakimov +4 more
doaj +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 +3 more
core +2 more sources
Nanomaterials, 2022 Photodetection based on assemblies of quantum dots (QDs) is able to tie the advantages of both the conventional photodetector and unique electronic properties of zero-dimensional structures in an unprecedented way. However, the biggest drawback of QDs is
Andrew I. Yakimov +3 more
doaj +1 more source
Photo-FETs: phototransistors enabled by 2D and 0D nanomaterials [PDF]
, 2016 The large diversity of applications in our daily lives that rely on photodetection technology requires photodetectors with distinct properties. The choice of an adequate photodetecting system depends on its application, where aspects such as spectral ...
Konstantatos, Gerasimos, Kufer, Dominik
core +2 more sources
Research, 2023 Recent advancements in two-dimensional materials have shown huge potential for optoelectronic applications. It is challenging to achieve highly effective and sensitive broadband photodetection based on MoS2 devices.
Ran Duan +5 more
doaj +1 more source
Optical detection and modulation at 2µm-2.5µm in silicon [PDF]
, 2014 Recently the 2µm wavelength region has emerged as an exciting prospect for the next generation of telecommunications. In this paper we experimentally characterise silicon based plasma dispersion effect optical modulation and defect based photodetection ...
Ackert, J.J. +7 more
core +1 more source