Relevant bibliographies by topics / Excitonic transport

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Excitonic transport'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Excitonic transport"

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MATSUI, A. H., M. TAKESHIMA, K. MIZUNO, and T. AOKI-MATSUMOTO. "PHOTOPHYSICAL OVERVIEW OF EXCITATION ENERGY TRANSFER IN ORGANIC MOLECULAR ASSEMBLIES — A ROUTE TO STUDY BIO-MOLECULAR ARRAYS —." International Journal of Modern Physics B 15, no. 28n30 (December 10, 2001): 3857–60. http://dx.doi.org/10.1142/s0217979201008846.

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Excitonic processes in organic molecular crystals are discussed in terms of two parameters, the crystal size and the constituent molecule size. From the luminescence and absorption spectra of a series of aromatic molecular crystals we find a systematic change in exciton energy transport as functions of the size of crystal and its constituent molecule size. Characteristic features of bulk crystals and microcrystallites are as follows. (1) In bulk crystals exciton energy transport depends on the constituent molecule size. When molecules are small, the exciton energy transport occurs by free excitons, but when molecules are large free exciton transport disappears because excitons get self-trapped. (2) In microcrystallites, exciton energy transport depends on the crystallite size. When the size is larger than a critical one, excitons travel as quantum mechanical waves but when the size is smaller than the critical one the exciton waves get confined within the crystallite. The results are independent of the chemical species of constituent molecules and thus applicable to novel molecular arrays such as biological molecular arrays.
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Fortin, E., S. Fafard, and André Mysyrowicz. "Exciton transport inCu2O: Evidence for excitonic superfluidity?" Physical Review Letters 70, no. 25 (June 21, 1993): 3951–54. http://dx.doi.org/10.1103/physrevlett.70.3951.

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Noltemeyer, Martin, Frank Bertram, Thomas Hempel, Barbara Bastek, Andrey Polyakov, Juergen Christen, Matthias Brandt, Michael Lorenz, and Marius Grundmann. "Excitonic transport in ZnO." Journal of Materials Research 27, no. 17 (June 14, 2012): 2225–31. http://dx.doi.org/10.1557/jmr.2012.139.

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Abramavicius, Darius, Vladimir Chorošajev, and Leonas Valkunas. "Tracing feed-back driven exciton dynamics in molecular aggregates." Physical Chemistry Chemical Physics 20, no. 33 (2018): 21225–40. http://dx.doi.org/10.1039/c8cp00682b.

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Excitation, exciton transport, dephasing and energy relaxation, and finally detection processes shift molecular systems into a specific superposition of quantum states causing localization, local heating and finally excitonic polaronic effects.
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Scholak, Torsten, Thomas Wellens, and Andreas Buchleitner. "Optimal networks for excitonic energy transport." Journal of Physics B: Atomic, Molecular and Optical Physics 44, no. 18 (September 14, 2011): 184012. http://dx.doi.org/10.1088/0953-4075/44/18/184012.

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Wolfe, J. P. "Imaging of excitonic transport in semiconductors." Journal of Luminescence 53, no. 1-6 (July 1992): 327–34. http://dx.doi.org/10.1016/0022-2313(92)90166-7.

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Benson, E., E. Fortin, and A. Mysyrowicz. "Anomalous exciton transport in Cu2O: Excitonic superfluidity or phonon-wind effect?" Solid State Communications 101, no. 5 (February 1997): 313–17. http://dx.doi.org/10.1016/s0038-1098(96)00600-x.

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Benson, E., E. Fortin, and A. Mysyrowicz. "Study of Anomalous Excitonic Transport in Cu2O." physica status solidi (b) 191, no. 2 (October 1, 1995): 345–67. http://dx.doi.org/10.1002/pssb.2221910211.

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Zhao, Hui, B. Dal Don, S. Moehl, and H. Kalt. "Non-classical excitonic transport in quantum wells." physica status solidi (b) 238, no. 3 (August 2003): 529–32. http://dx.doi.org/10.1002/pssb.200303181.

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Krasnok, Alexander, and Andrea Alù. "Valley-Selective Response of Nanostructures Coupled to 2D Transition-Metal Dichalcogenides." Applied Sciences 8, no. 7 (July 17, 2018): 1157. http://dx.doi.org/10.3390/app8071157.

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Monolayer (1L) transition-metal dichalcogenides (TMDCs) are attractive materials for several optoelectronic applications because of their strong excitonic resonances and valley-selective response. Valley excitons in 1L-TMDCs are formed at opposite points of the Brillouin zone boundary, giving rise to a valley degree of freedom that can be treated as a pseudospin, and may be used as a platform for information transport and processing. However, short valley depolarization times and relatively short exciton lifetimes at room temperature prevent using valley pseudospins in on-chip integrated valley devices. Recently, it was demonstrated how coupling these materials to optical nanoantennas and metasurfaces can overcome this obstacle. Here, we review the state-of-the-art advances in valley-selective directional emission and exciton sorting in 1L-TMDC mediated by nanostructures and nanoantennas. We briefly discuss the optical properties of 1L-TMDCs paying special attention to their photoluminescence/absorption spectra, dynamics of valley depolarization, and the valley Hall effect. Then, we review recent works on nanostructures for valley-selective directional emission from 1L-TMDCs.
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Dissertations / Theses on the topic "Excitonic transport"

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Breitkreiz, Maxim. "Transport Theory for Metals with Excitonic Instabilities." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-190697.

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Metals with excitonic instabilities are multiband systems with significant electron-electron interaction. The electronic transport in such systems is affected by collective fluctuations of the electrons, leading to anomalous features in the measured transport coefficients. Many of these anomalies have not been well understood because the transport mechanisms in these systems tend to be rather complex. The complexity arises, on the one hand, from the multiband nature and, on the other, from the anisotropic scattering of electrons accompanied by emitting or absorbing collective fluctuations. Previous works considering scattering due to collective fluctuations have mainly focused on single-band systems, for example in the context of the normal-state transport in cuprates. The recent discovery of high-temperature superconductivity in iron pnictides has renewed the interest in multiband systems. Exploring the transport mechanisms in multiband systems, I find some interesting new aspects, which do not occur in single-band systems. In particular, anisotropic scattering in a model with electronlike and holelike Fermi surfaces can lead to a negative conductivity contribution of the minority carriers, i.e., in an electric field, the minority carriers drift in the direction opposite of what one would expect based on their charge. I show that this effect can explain a reduced magnetoresistance in connection with an enhanced Hall coefficient, which has been measured in pnictides. Of particular interest are multiband models with hot spots on the Fermi surface, in part because of their relevance for the iron pnictides. Hot spots are states with enhanced scattering and therefore reduced excitation lifetimes. In single-band systems, the hot spots are found to have a much lower contribution to the total conductivity than other parts of the Fermi surface, which leads to the so-called hot-spot structure. I show that in the multiband case, the conductivity contributions are much more isotropic around the Fermi surface so that hot spots contribute to transport with a similar strength as other parts of the Fermi surface. I discuss this effect on the basis of an approximate analytical solution of the transport problem and numerically calculate the temperature dependence of several transport coefficients. It turns out that in the nematic phase of iron pnictides, the unexpectedly strong conductivity contribution of hot spots can explain the puzzling behavior of the resistive anisotropy. I show that the experimental observations can be explained within a scenario in which the anisotropy is mainly due to the broken symmetry of the spin-fluctuation spectrum in the nematic phase. In the spin-density-wave state, strongly anisotropic scattering can arise due to the propagating magnons. Using a two-band model relevant for iron pnictides, I find that this scattering can lead to an unusual interruption of the orbital motion of electrons in the magnetic field. As a consequence, the low-field magnetoresistance is linear with an alternating sign of the slope as a function of the direction of the current. In strong magnetic fields, the interrupted orbital motion makes the system unstable, which is characterized by a drop of the resistivity to zero.
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Chiaruttini, François. "États collectifs et dispositifs basés sur les excitons indirects dans des puits quantiques à grand gap." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTS029.

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Les excitons indirects dipolaires, sont des quasi-particules bosoniques dans les semi-conducteurs, composés d'un électron et d'un trou spatialement séparés mais toujours liés par interaction coulombienne. Leur grande durée de vie radiative et leur capacité à se déplacer sur de grandes distances avant leur recombinaison en font un système unique qui peut être à la fois optiquement actif mais également électriquement contrôlable. Ce système permet l'étude des propriétés fondamentales de la lumière et de la matière, mais aussi le développement de dispositifs excitoniques conceptuellement nouveaux. Les excitons dans les puits quantiques polaires en nitrure de gallium (GaN) peuvent être considérés comme des excitons naturellement indirects, en raison du fort champ électrique intrinsèque existant dans la direction de croissance cristalline. Cette thèse est consacrée à l'étude expérimentale et une étude des excitons indirects dans des hétérostructures GaN/(Al,Ga)N, ainsi que les états collectifs, depuis la conception et la fabrication jusqu'à la spectroscopie optique de leurs états collectifs.Les principaux résultats de ce travail sont (i) la démonstration du confinement spatial dans le plan et du refroidissement des excitons indirects, lorsqu'ils sont piégés dans le potentiel électrostatique créé par des électrodes semi-transparentes de géométries diverses soigneusement conçues et déposées sur la surface de l'échantillon, qui est une condition préalable à l'étude du diagramme de phase complexe de ces bosons dipolaires à basse température ; (ii) la preuve de principe du contrôle électrique des densités et des flux d'excitons indirects dans le plan du puits quantique. Cela ouvre des perspectives intéressantes pour la réalisation de dispositifs excitoniques ; (iii) les premiers points sur le diagramme de phase des bosons dipolaires, fournissant une première mise en évidence non seulement de l'existence d'un phase fortement corrélée résultant des corrélations induites à forte densité (phase de liquide dipolaire) mais aussi la dissociation (transition de Mott) de ces excitons indirects dans les hétérostructures GaN/(Al,Ga)N
Indirect, or dipolar excitons are bosonic quasi-particles in semiconductors composed of spatially separated but still Coulomb-bound electron and hole. They have long lifetime and can travel over large distances before recombination, offering a unique system that can be both optically active and electrically controllable. It is suitable for studies of fundamental properties of light and matter and for the development of conceptually new excitonic devices. Excitons in polar GaN quantum wells can be considered as naturally indirect excitons, because of the strong built-in electric field in the growth direction. This dissertation describes an experimental realization and investigation of indirect excitons engineered in GaN/(Al,Ga)N heterostructures, and the collective states that these can form. The main results of this work are (i) the demonstration of the in-plane confinement and cooling of indirect excitons, when trapped in the electrostatic potential created by semitransparent electrodes of various shapes carefully designed and deposited on the sample surface, this is a prerequisite for studies of the complex phase diagram of these dipolar bosons at low temperatures ; (ii) The proof-of-principle for electrical control of the indirect exciton densities and fluxes in the plane of the heterostructure, which opens attractive prospects for realization of excitonic devices ; (iii) the first points on the dipolar boson phase diagram, providing first evidence of the density-induced correlated state (dipolar liquid) and dissociation (Mott transition) of the indirect excitons in GaN/(Al,Ga)N heterostructures
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Fruchtman, Amir. "Theory and modelling of energy transport in quantum nanostructures." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:9c00d93c-c839-4342-9dc1-c2917c71a670.

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This thesis is concerned with quantum properties of excitonic energy transport in nanostructures that are embedded in a noisy environment. Of principal interests are ways to exploit this environment to facilitate the transport of energetic excitations. The first research chapter deals with an extension to the 'standard' open quantum system picture, where the Hilbert space is split into three: system, environment, and a wider universe. This division is natural for many biological and artificial nanostructures. A new analytical method, based on a phase space representation of the density matrix, is developed for studying such division. The effects of the wider universe are shown to be captured by a simple correction of the environmental response function. The second research chapter addresses the question: when do second-order perturbative approaches to open quantum systems, which are intuitive and simple to compute, provide adequate accuracy? A simple analytical criterion is developed, and its validity is verified for the case of the much-studied FMO dynamics as well as the canonical spin-boson model. In the third research chapter, an intuitive model of a photocell is studied. The model comprises two light-absorbing molecules coupled to an idealised reaction centre, showing asymmetric dimers are capable of providing a significant enhancement of light-to-current conversion under ambient conditions. This is done by 'parking' the energy of an absorbed photon in a dark state which neither absorbs nor emits light. In the final research chapter, a basic model for what can be thought as a "quantum brachistochrone" problem is investigated. Exotic energy configurations are found to yield considerable enhancement to the exciton's transfer probability, due to similar mechanisms studied in the previous chapter.
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Lafalce, Evan. "Photophysical and Electronic Properties of Low-Bandgap Semiconducting Polymers." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5424.

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In this Ph.D. work, we investigate the optoelectronic properties of low-bandgap semiconducting polymers and project the potential for employing these materials in electronic and photonics devices, with a particular emphasis on use in organic solar cells. The field of organic solar cells is well developed and many of the fundamental aspects of device operation and material requirements have been established. However, there is still more work to be done in order for these devices to ultimately reach their full potential and achieve commercialization. Of immediate concern is the low power conversion efficiency demonstrated in these devices so far. In order to improve upon this efficiency, several routes are being explored. Because the optical bandgaps of semiconducting polymers are larger than in inorganic semiconductors, one of the most promising routes currently under exploration is the development of low-bandgap materials. Using polymers with lower band gaps will allow more of the solar irradiance spectrum to be absorbed and converted into electricity and thus possibly boost the overall efficiency. The bandgap of these semiconducting polymers is determined by the chemical structure, and therefore can be tailored through synthesis if the relevant structure-property relationships are well-understood. The materials studied in this work, a new series of Poly(thienylenevinylene) (PTV) derivatives, posses lower band gaps than conventional polymers through a design that incorporates aromatic-quinoid structural disturbances. This type of chemical structure delocalizes the electronic structure along the polymer backbone and reduces the energy of the lowest excited-state leading to a smaller band-gap. We investigate these materials through a variety of techniques including linear spectroscopy such as absorption and photoluminescence, pump-probe techniques like cw-photoinduced absorption and transient photo-induced absorption, and the non-linear electroasborption technique in order to interrogate the consequences of the delocalized electronic structure and its response to optical stimuli. We additionally consider the effects of environmental factors such as temperature, solvents and chemical doping agents. During the course of these investigations, we consider both of the two primary categorical descriptions of structure-property relationships for polymers within the molecular exciton model, namely the role of inter-molecular interactions on the electronic properties through the variation of supermolecular order and the fundamental determination of electronic structure due to specific intra-molecular interaction along the backbone of the polymer chain. We show that the dilution of aromaticity in semiconducting polymers, while being a viable means of reducing the optical band gap, results in a significant increase in the role of electron-electron interactions in determining the electronic properties. This is observed to be detrimental for device performance as the highly polarizable excited state common to polymers gives way to highly correlated state that extinguishes both the emissive properties and more importantly for solar cells, the charge-generating characteristics. This situation is shown to be predominant regardless of the nature of interchain interactions. We therefore show that the method of obtaining low-bandgap polymers here comes along with costly side-effects that inhibit their efficient application in solar cells. Further, we directly probe the efficacy of these materials in the common bulk-heterojunction architecture with both spectroscopy and device characterization in order to determine the limiting and beneficial factors. We show that, while from the point of view of absorption of solar radiation these low-bandgap polymers are more suited for solar cells, the ability to convert the absorbed photons into electron-hole pairs and generate electricity is lacking, due to the internal conversion into the highly correlated state and thus, the absorbed photon energy is lost. For completeness, we fabricate devices and verify that both the charge-transport properties and alignment of charge extraction levels with those of the contacts can not be responsible for the dramatic decrease in efficiency found from these devices as compared to other higher band gap polymers. We thus conclusively determine that the lack of power converison efficiency is governed by the inefficiency of charge-generation resulting from the intrinsic defective molecular structures rendering a low-lying optically forbidden state below the lowest optical allowed state that consumes the majority of the photogenerated excitons. It is emphasized that our means of investigation allow us to truly access the potential of these materials. In contrast, the direct application of these systems in devices and interpretation of the performance is exceedingly complex and may obscure their true potential. In other words, poor performance from a device may be extrinsic in nature and the optimization process may be very costly with respect to both time and materials. The methods used here however, allow us to determine the intrinsic potential. Not only is this beneficial in terms of preserving the resources that would be used on the trial-and-error method for devices, but it also allows us to learn more on a fundamental level about the structure-property relationships and their implications for device performance. The benefits of this increased understanding are two-fold. First, by learning about the fundamental response of a material, a new application may be realized. For example, the rapidly efficient internal conversion process that renders the materials in this study as poor candidates for solar cells may make them useful for photonics applications, as optical switches, for instance. Secondly, this type of investigation has implications for the whole organic electronics community instead of just being limited to the particular material system and the primary application attempted. In this case, we are essentially able to determine a threshold for aromaticty necessary in a structure that will preserve the stability of the ionic excited state that is useful for charge generation in solar cells.
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Breitkreiz, Maxim [Verfasser], Carsten [Akademischer Betreuer] Timm, and Jörg [Akademischer Betreuer] Schmalian. "Transport Theory for Metals with Excitonic Instabilities / Maxim Breitkreiz. Betreuer: Carsten Timm. Gutachter: Carsten Timm ; Jörg Schmalian." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1080645284/34.

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Breitkreiz, Maxim [Verfasser], Carsten Akademischer Betreuer] Timm, and Jörg [Akademischer Betreuer] [Schmalian. "Transport Theory for Metals with Excitonic Instabilities / Maxim Breitkreiz. Betreuer: Carsten Timm. Gutachter: Carsten Timm ; Jörg Schmalian." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1080645284/34.

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Coulson, Christopher. "Charge transport of exciton-polaritons." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648166.

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Abdelmoula, Tarik. "Exciton transport in organic nanostructures." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/31376.

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Excitons are quasi-particles, which are responsible for energy transport in organic semiconductors. Excitons are therefore instrumental in understanding the photophysics of organic opto-electronic devices. The present work focused on describing the dynamics of spin-forbidden, long-lived triplet excitons in archetypal organic materials such as CBP. Triplet excitons lifetime and diffusion length are here estimated from modelling the results of triplet-triplet photoinduced absorption spectroscopy, steady-state photoluminescence spectroscopy and time-resolved photoluminescence measurements. The last two measurements are performed using a modified time-of-flight method, whereby the investigated material is adjacent to a phosphorescent sensing layer and optically excited from the opposite side. As the thickness of the material is increased, the variations of phosphorescence intensity coming from the sensing layer is correlated to the exciton diffusion parameters. We show that for fluorescent materials such as CBP, the near-field component of this emission couples to guided modes supported by the structure and directly excites the sensitizer - here Ir(ppy)3 doped into CBP - which lead to an overestimation of the diffusion length. In addition, we investigate a strategy to mitigate the effect of guided modes by using an optical quenching layer of C6. This results in an estimated triplet exciton lifetime in the ms range and a diffusion length in excess of 30 nm, based on modelling the steady-state and time-resolved emission of the sensing layer when varying CBP thickness.
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Ivanov, Anton [Verfasser], and Heinz-Peter [Akademischer Betreuer] Breuer. "Exciton and electron transport in open quantum systems." Freiburg : Universität, 2016. http://d-nb.info/1125905409/34.

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Bjorgaard, Josiah August. "Exciton Diffusion, Transport, and Localization in Conjugated Polymers." Diss., North Dakota State University, 2013. https://hdl.handle.net/10365/27196.

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Conjugated polymers are wide bandgap semiconductors which have a series of conjugated π-orbitals that extend along the polymer ‘backbone’. The π-orbital conjugation can be disrupted by twisting of the polymer, affecting their optical properties. These materials are very useful for devices, where they are frequently found in semicrystalline thin films. In thin films, Frenkel excitons diffuse on a nanometer scale. However, measurement of the diffusion length of excitons in conjugated polymer films is currently very difficult. Disordered packing and twisting of polymers plays a significant role, but has not been examined in detail. This dissertation presents methods of measuring exciton diffusion length in polymer films and nanoparticles and explains the effect of nuclear disorder on the optical spectra and exciton diffusion in semicrystalline polymer films.
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Books on the topic "Excitonic transport"

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Siebbeles, Laurens D. A., and Ferdinand Cornelius Grozema. Charge and exciton transport through molecular wires. Weinheim: Wiley-VCH, 2010.

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Siebbeles, Laurens D. A., and Ferdinand C. Grozema, eds. Charge and Exciton Transport through Molecular Wires. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633074.

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Leonard, Jason. Exciton Transport Phenomena in GaAs Coupled Quantum Wells. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69733-8.

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Siebbeles, Laurens D. A., and Ferdinand C. Grozema. Charge and Exciton Transport Through Molecular Wires. Wiley & Sons, Incorporated, John, 2011.

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Siebbeles, Laurens D. A., and Ferdinand C. Grozema. Charge and Exciton Transport Through Molecular Wires. Wiley & Sons, Incorporated, John, 2011.

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Siebbeles, Laurens D. A., and Ferdinand C. Grozema. Charge and Exciton Transport Through Molecular Wires. Wiley & Sons, Limited, John, 2011.

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Leonard, Jason. Exciton Transport Phenomena in GaAs Coupled Quantum Wells. Springer, 2019.

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Leonard, Jason. Exciton Transport Phenomena in GaAs Coupled Quantum Wells. Springer, 2017.

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Kavokin, Alexey V., Jeremy J. Baumberg, Guillaume Malpuech, and Fabrice P. Laussy. Polariton Devices. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198782995.003.0012.

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Polariton devices offer multiple advantages compared to conventional semiconductor devices. The bosonic nature of exciton polaritons offers opportunity of realisation of polariton lasers: coherent light sources based on bosonic condensates of polaritons. The final state stimulation of any transition feeding a polariton condensate has been used in many proposals such as for terahertz lasers based on polariton lasers. Furthermore, large coherence lengths of exciton-polaritons in microcavities open the way to realisation of polariton transport devices including transistors and logic gates. Being bosonic spin carriers, exciton-polaritons may be used in spintronic devices and polarisation switches. This chapter offers an overview on the existing proposals for polariton devices.
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LightDriven Alignment Springer Series in Optical Sciences. Springer, 2008.

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Book chapters on the topic "Excitonic transport"

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Leonard, Jason. "Observation of Exciton Spin Transport." In Exciton Transport Phenomena in GaAs Coupled Quantum Wells, 47–59. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69733-8_5.

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Leonard, Jason. "Controlled Exciton Transport via an Optically Controlled Exciton Transistor." In Exciton Transport Phenomena in GaAs Coupled Quantum Wells, 23–31. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69733-8_3.

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Tikhodeev, S. G., and N. A. Gippius. "Anomalous transport of excitons in Cu2O." In Springer Proceedings in Physics, 105–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59484-7_43.

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Leonard, Jason. "Controlled Exciton Transport via a Ramp." In Exciton Transport Phenomena in GaAs Coupled Quantum Wells, 15–22. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69733-8_2.

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Leonard, Jason. "Controlled Exciton Transport via a Conveyer." In Exciton Transport Phenomena in GaAs Coupled Quantum Wells, 33–45. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69733-8_4.

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Pugžlys, Audrius, Ralph Hania, Catalin Didraga, Victor Malyshev, Jasper Knoester, and Koos Duppen. "Ultrafast Exciton Transport in Organic Nanotubes." In Springer Series in Chemical Physics, 879–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27213-5_268.

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Miller, John R., Andrew R. Cook, Kirk S. Schanze, and Paiboon Sreearunothai. "Electron and Exciton Transport to Appended Traps." In Charge and Exciton Transport through Molecular Wires, 189–205. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633074.ch7.

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Grozema, Ferdinand C., and Laurens D. A. Siebbeles. "Introduction: Molecular Electronics and Molecular Wires." In Charge and Exciton Transport through Molecular Wires, 1–15. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633074.ch1.

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Andrew, Trisha L., and Timothy M. Swager. "Structure Property Relationships for Exciton Transfer in Conjugated Polymers." In Charge and Exciton Transport through Molecular Wires, 271–310. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633074.ch10.

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Solomon, Gemma C., David Q. Andrews, and Mark A. Ratner. "Quantum Interference in Acyclic Molecules." In Charge and Exciton Transport through Molecular Wires, 17–59. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527633074.ch2.

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Conference papers on the topic "Excitonic transport"

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Noltemeyer, Martin, Frank Bertram, Thomas Hempel, Barbara Bastek, Juergen Christen, Matthias Brandt, Michael Lorenz, and Marius Grundmann. "Excitonic transport in ZnO." In SPIE OPTO, edited by Ferechteh H. Teherani, David C. Look, and David J. Rogers. SPIE, 2012. http://dx.doi.org/10.1117/12.912308.

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Li, Jinwei, and Yong Shi. "Electron Transport and Recombination in TiO2 Nanofiber Dye Sensitized Solar Cell." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64979.

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Dye sensitized solar cells (DSSCs), a new type of photo-electrochemical solar cells, are a promising alternative to the silicon based photovoltaic because they hold advantages of low cost, simple manufacturing processes and higher conversion efficiency compared with other types of excitonic solar cell. DSSCs with conversion efficiencies of up to 11% have been achieved with a highly stable electrolyte under AM1.5G conditions. Recently, one dimensional (1D) electrospun TiO2 nanofibers have been used as the DSSC photoanode to improve the electron transport efficiency and enhance the light harvest efficiency by scattering more light in the red part of the solar spectrum. In this paper, stepped light induced transient measurement of photocurrent and voltage (SLIM-PCV) has been employed to study electron transport and recombination in DSSCs. Electron diffusion coefficients and electron lifetimes were measured with differing light intensities. The electron diffusion coefficients and electron lifetimes strong correlate with intensity, which indicates the trap limited diffusion process for electrons in the TiO2 nanofiber DSSC.
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Paiva, Laura Simonassi Raso de, Leonardo Evaristo de Sousa, and Pedro Henrique de Oliveira Neto. "Energy transport in conjugated polymers: electronic structure and kinetic Monte Carlo simulations." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol202076.

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Conjugated polymers are materials that have attracted much attention from the research community because of their charge and energy transport properties. In this sense, it is necessary to understand the mechanism behind exciton transfer in this particular class of systems. However, direct application of procedures done for different organic compounds is not straightforward for long polymeric chains, because such procedures would be computationally impracticable. In that matter, alternative treatments are required. In this work, we perform spectrum simulations for poly-thiophene (PTH) and poly(p-phenylene vinylene) (PPV) chains by analyzing the evolution of electronic properties with oligomer sizes and its effects on exciton diffusion. Furthermore, employing a kinetic Monte Carlo model, we also investigate the efficiency of intrachain exciton diffusion. Our results show a reliable description of the optical properties for long polymeric chains, and a comparison is made between the different approaches in describing the optical properties of such polymers. This study may be useful in the development of more sophisticated optoelectronic devices that use conjugated polymers as its active materials.
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Sneyd, Alexander, Tomoya Fukui, David Beljonne, Ian Manners, Richard Friend, Akshay Rao, and Suryoday Prodhan. "Long-Range Electrostatics Supercharge Exciton Transport." In 13th Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.hopv.2021.046.

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Binder, Robert, Wjatscheslaw Popp, Dominik Brey, and Irene Burghardt. "Coherent carrier and exciton transport in organic semiconductors." In Nanophotonics VIII, edited by David L. Andrews, Jean-Michel Nunzi, Martti Kauranen, and Angus J. Bain. SPIE, 2020. http://dx.doi.org/10.1117/12.2556073.

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Eda, Goki. "Charge Transport and Exciton Dynamics in 2D Semiconductors." In 2014 IEEE Photonics Society Summer Topical Meeting Series. IEEE, 2014. http://dx.doi.org/10.1109/sum.2014.9.

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Holmes, Russell, Tao Zhang, Dana Dement, and Vivian Ferry. "Intrinsic Measurements of Exciton Transport in Photovoltaic Cells." In 1st Interfaces in Organic and Hybrid Thin-Film Optoelectronics. València: Fundació Scito, 2019. http://dx.doi.org/10.29363/nanoge.inform.2019.041.

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Leonard, Jason, Mikas Remeika, Yuliya Y. Kuznetsova, Alexander A. High, Leonid V. Butov, Micah Hanson, and Arthur Gossard. "Transport of Indirect Excitons in a Potential Energy Gradient." In Quantum Electronics and Laser Science Conference. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/qels.2012.qm1g.7.

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Fainberg, B. D., P. Hanggi, S. Kohler, A. Nitzan, M. R. Singh, and R. H. Lipson. "Exciton- and Light-induced Current in Molecular Nanojunctions." In TRANSPORT AND OPTICAL PROPERTIES OF NANOMATERIALS: Proceedings of the International Conference—ICTOPON-2009. AIP, 2009. http://dx.doi.org/10.1063/1.3183490.

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Tripathi, L. N., M. Haridas, J. K. Basu, M. R. Singh, and R. H. Lipson. "Exciton Plasmon Coupling in Hybrid Semiconductor-Metal Nanoparticle Monolayers." In TRANSPORT AND OPTICAL PROPERTIES OF NANOMATERIALS: Proceedings of the International Conference—ICTOPON-2009. AIP, 2009. http://dx.doi.org/10.1063/1.3183467.

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Reports on the topic "Excitonic transport"

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Bommisetty, Venkat. Symposium GC: Nanoscale Charge Transport in Excitonic Solar Cells. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1017096.

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