Quantum dots (QDs) for photonic applications

Prabhakaran, Prém; Kim, Won Jin; Lee, Kwang-Sup; Prasad, Paras N.

doi:10.1364/ome.2.000578

Cited by 48 publications

(28 citation statements)

References 48 publications

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“…These bioconjugates have a wide field of applications, from immunoassays to cells and organelles imaging or mutation detection. Other important applications of QDs appear to be traceable drug delivery, intracellular sensors [9], vectors for gene therapy [10], quantum computers, [11] and photodetectors [12].…”

Section: Introductionmentioning

confidence: 99%

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

et al. 2015

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Section: Introductionmentioning

confidence: 99%

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

et al. 2015

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“…QWs are widely used for many years to make semiconductor lasers 56 or photodetectors 57 . QDs have already many applications in particular in biology, for single photon generation, to enhance solar cell efficiency 58 . The demonstration of quantum confinement has been shown for a lot of semiconductor materials.…”

Section: Back To Basic 2: Refractive Index and Quantum Structuresmentioning

confidence: 99%

Low dimensional optics

Flory

Escoubas

Rouzo

et al. 2014

Nanostructured Thin Films VII

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Thanks to progresses in material science and nanotechnologies, surfaces and thin films can now be structured at different scales. Photonics components take benefit of this possibility to fulfill still more and more complex functions. They are composed as well of organic as inorganic materials, dielectric, semiconductor, and metallic materials, or a mixture of them. Multiscale and chiral structures can be used to control both spectral, spatial distribution of light together with its polarization state. The optical mode density in the near field and in the far field can then be designed in particular by combining more or less resonant structures for the optical waves, associating diffraction, interferences and anisotropic structures like Fabry-Perot, waveguide, plasmons, photonic crystals ... Artificially nanostructured materials often called metamaterials exhibit new properties. Different phenomena recently considered, including optical topological insulator and structures for vortex waves transporting angular momentum of photons, will be also discussed and illustrated. With the development of nanometer size structures another step is overtaken allowing the control of the intimate interaction of optical waves with materials to tune their basic electronic properties and permittivity. Both optical and electronic properties are also strongly dependent on coupling effects needing a global approach.

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“…P HOTONIC and electronic properties of quantum dots (QDs) are drawing tremendous attention for a broad range of applications [1]- [3]. The luminescence quantum efficiency (LQE) of QDs is a key parameter determining the performance in devices such as photovoltaic (PV) cells, photo detectors, light emitters, imagers, etc.…”

Section: Introductionmentioning

confidence: 99%

Spectrally Resolved Dynamics of Synthesized CdSe/ZnS Quantum Dot/Silica Nanocrystals for Photonic Down-Shifting Applications

Sadeghimakki

Jahed

Sivoththaman

2014

IEEE Trans. Nanotechnology

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Photonic structures capable of luminescence downshifting (LDS) have strong application potential in several areas of optoelectronics. Such structures can be formed by overcoating quantum dots (QDs) with integrable, transparent layers. In this paper, silica was grown on CdSe/ZnS QDs to form QD/silica nanocrystals (NCs) in a microemulsion synthesis process. The synthesized structures were structurally and optically characterized to understand the growth mechanism, luminescence properties, and the influence of process parameters on excitonic decay and lifetime. Process conditions were established to have single QDs at the centers of the silica particles. The effects of temperature, excitation duration, size of QDs, and type of ligands on decay dynamics were established. Temperature-and time-resolved excitonic decay study of QD/silica NCs suggested carrier-trapping at the QD/silica interface and the exciton-phonon coupling to be the two main nonradiative processes limiting the luminescence efficiency. The synthesized NCs displayed intense photoluminescence (PL) with slight decrease in lifetime. The PL efficiency of the NCs improved for longer illumination. The NC structures that safely embed QDs in transparent medium are good candidates for LDS applications in photovoltaic, imaging, and detection devices.Index Terms-CdSe/ZnS quantum dot (QD), excitonic decay, ligand exchange, luminescence down-shifting (LDS), photoluminescence (PL), QD/silica nanocrystals (NCs), synthesis.

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Quantum dots (QDs) for photonic applications

Cited by 48 publications

References 48 publications

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

Low dimensional optics

Spectrally Resolved Dynamics of Synthesized CdSe/ZnS Quantum Dot/Silica Nanocrystals for Photonic Down-Shifting Applications

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