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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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Selective internalization of ZnAl-HTlc nanoparticles in normal and tumor cells. A study of their potential use in cellular delivery
Tamara Posati,Francesca Bellezza,Luigi Tarpani,Stefano Perni,Loredana Latterini,Valeria Marsili,Antonio Cipiciani +6 more
TL;DR: Fluorescence confocal imaging showed a different localization pattern of nanosized HTlc in the two cell lines and a higher fluorescence signals in tumor cells supporting the occurrence of more efficient internalization processes in the pathogen cell line as observed in the cellular uptake experiments.
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Graphene as a Reversible and Spectrally Selective Fluorescence Quencher
TL;DR: Graphene can be used as an electrically tunable and wavelength selective fluorescence quencher and will provide tunable light-matter interaction and energy transfer that could yield hybrid QDs-graphene based optoelectronic devices with novel functionalities, and may be useful as a spectroscopic ruler in bioimaging and biomolecular sensing.
Journal ArticleDOI
Balanced Photodetection in Mixed-Dimensional Phototransistors Consisting of CsPbBr3 Quantum Dots and Few-Layer MoS2
Abstract: Balanced photodetection endows photoconductive detectors with high photoresponsivity and fast photoresponse speed. Here, we report a mixed-dimensional phototransistor consisting of CsPbBr3 colloida...
Journal ArticleDOI
Photodetector with superior functional capabilities based on monolayer WO3 developed by atomic layer deposition
TL;DR: In this paper, a monolayer of tungsten trioxide (WO3) was fabricated by atomic layer deposition (ALD) and its structure and properties were analyzed by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), ellipsometry, and spectrophotometry techniques.
Journal ArticleDOI
Two-step vapor deposition of self-catalyzed large-size PbI2 nanobelts for high-performance photodetectors
Mingming Han,Jiamin Sun,Luozhen Bian,Zhou Wang,Lei Zhang,Yanxue Yin,Zhaofeng Gao,Fulin Li,Qian Xin,Longbin He,Ning Han,Aimin Song,Zaixing Yang +12 more
TL;DR: In this paper, large-size (length > 100 μm), single-crystalline and high-density PbI2 nanobelts are successfully synthesized by manipulating the microenvironment in a two-step vapor deposition process at a slow heating rate of ∼18 °C min−1.
References
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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
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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.
Journal ArticleDOI
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.