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Nanostructured materials for photon detection
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TLDR
Progress in light sensing using nanostructured materials is reviewed, focusing on solution-processed materials such as colloidal quantum dots and metal nanoparticles.Abstract:
The detection of photons underpins imaging, spectroscopy, fibre-optic communications and time-gated distance measurements. Nanostructured materials are attractive for detection applications because they can be integrated with conventional silicon electronics and flexible, large-area substrates, and can be processed from the solution phase using established techniques such as spin casting, spray coating and layer-by-layer deposition. In addition, their performance has improved rapidly in recent years. Here we review progress in light sensing using nanostructured materials, focusing on solution-processed materials such as colloidal quantum dots and metal nanoparticles. These devices exhibit phenomena such as absorption of ultraviolet light, plasmonic enhancement of absorption, size-based spectral tuning, multiexciton generation, and charge carrier storage in surface and interface traps.read more
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Journal ArticleDOI
Photosensitive Graphene Transistors
TL;DR: This review will introduce the applications of graphene transistors as photodetectors in different wavelength ranges including terahertz, infrared, visible, and ultraviolet, focusing on the device design, physics and photosensitive performance.
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High Responsivity and Gate Tunable Graphene‐MoS2 Hybrid Phototransistor
TL;DR: A 2D atomic-layer-thickness phototransistor based on a graphene-MoS2 bybrid device is constructed with a photoresponse much larger than that of individual graphene or MoS2 basedphototransistors, with great potential for future application in integrated nano-optoelectronic systems.
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Two-Dimensional Materials for Halide Perovskite-Based Optoelectronic Devices
Shan Chen,Gaoquan Shi +1 more
TL;DR: The recent advancements in the applications of conventional 2D materials for halide perovskite-based photodetectors, solar cells and light-emitting diodes are comprehensively summarized.
Journal ArticleDOI
New ultraviolet photodetector based on individual Nb2O5 nanobelts
Xiaosheng Fang,Linfeng Hu,Kaifu Huo,Biao Gao,Lijuan Zhao,Meiyong Liao,Paul K. Chu,Yoshio Bando,Dmitri Golberg +8 more
TL;DR: In this article, a high-performance UV photodetector made of an individual Nb 2 O 5 nanobelt was presented, which exhibited linear photocurrent characteristics, excellent light selectivity, and high external quantum-effiency (EQE) of 6070%.
Journal ArticleDOI
Self-powered, visible-light photodetector based on thermally reduced graphene oxide–ZnO (rGO–ZnO) hybrid nanostructure
TL;DR: In this article, a new type of self-powered, visible-light photodetector fabricated from thermally reduced rGO-ZnO hybrid nanostructure was reported.
References
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Journal ArticleDOI
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
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Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites
TL;DR: In this paper, a simple route to the production of high-quality CdE (E=S, Se, Te) semiconductor nanocrystallites is presented, based on pyrolysis of organometallic reagents by injection into a hot coordinating solvent.
Journal ArticleDOI
Shape-Controlled Synthesis of Gold and Silver Nanoparticles
Yugang Sun,Younan Xia +1 more
TL;DR: Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP), characterized by a slightly truncated shape bounded by {100, {110}, and {111} facets.
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Hybrid Nanorod-Polymer Solar Cells
TL;DR: It is demonstrated that semiconductor nanorods can be used to fabricate readily processed and efficient hybrid solar cells together with polymers and Tuning the band gap by altering the nanorod radius enabled us to optimize the overlap between the absorption spectrum of the cell and the solar emission spectrum.
Journal ArticleDOI
Plasmonics: merging photonics and electronics at nanoscale dimensions.
TL;DR: The current status and future prospects of plAsmonics in various applications including plasmonic chips, light generation, and nanolithography are reviewed.