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Relevant bibliographies by topics / Accumulation de charge photoinduite / Dissertations / Theses

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Dissertations / Theses on the topic 'Accumulation de charge photoinduite'

Author: Grafiati

Published: 7 December 2024

Last updated: 31 July 2025

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1

Cruz, neto Daniel H. "Photophysical investigations of reversible charge accumulation in photocatalytic molecular systems." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP098.

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Inspirée de la nature, la conversion de l’énergie solaire par photosynthèse artificielle est l’une des solutions les plus prometteuses à la crise énergétique mondiale actuelle. Cependent, déployer des systèmes artificiels fonctionnels nécessite une compréhension approfondie des processus intégrés dans le fonctionnement des systèmes naturels car ils fournissent les directions pour réaliser des dispositifs de photosynthèse artificielle. Ces processus incluent l’absorption de la lumière, la séparation des charges, plusieurs étapes de transfert de charges menant à leur accumulation et, enfin, la c

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2

Di, Pietro Riccardo. "Charge accumulation spectroscopy of organic semiconductors." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610645.

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3

Liu, Q. "Charge transport and accumulation around HVDC insulators." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3019590/.

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High voltage direct current (HVDC) based transmission of electric power, in comparison with high voltage alternating current (HVAC) transmission over a distance of over 800 km, has the advantages of higher transmission capability, lower line loss, more confined damage by fault, and that all AC lines connected to an HVDC system do not need to be synchronized. However, under DC conditions the electric field across the insulation space remains unidirectional and stable, which results in charge accumulation, leading to significant differences in the dielectric behavior and flashover characteristic

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4

Olson, Carol Louise. "Charge accumulation and recombination in nanocrystalline metal oxide electrodes." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405970.

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5

Glicofridis, Paul Ioannis 1973. "Subsurface Charge Accumulation imaging of the quantum Hall liquid." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/29894.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2001.<br>Includes bibliographical references (p. 161-172).<br>We describe results obtained by a novel scanning technique, called Subsurface Charge Accumulation (SCA) Imaging, that enables the direct imaging of electronic systems buried inside semiconductor materials. Using SCA Imaging, we image and measure properties of a two-dimensional electron system (2DES) in a GaAs/AlGaAs heterostructure, in the regime of the integer quantum Hall effect. We observe general charging features in a plain 2DES near quantum Hall integer

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6

Mauseth, Frank. "Charge accumulation in rod-plane air gap with covered rod." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1489.

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<p>The focus of this work has been on hybrid insulation in inhomogeneous electric fields under lightning impulse voltage stress. The principal idea behind hybrid insulation is the intentional use of surface charges to re-distribute the electric field within an insulation system. This allows a significant part of the electric stress to be transferred from the dielectric weaker gas to the dielectric stronger solid insulation thus increasing the total electric strength of the insulation system.</p><p>The concept has been theoretically and experimentally addressed by means of a hemispheric rod cov

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7

Nikonov, Vladimir. "Influence of electrode surface charge accumulation upon partial discharge behavior." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/MQ53594.pdf.

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8

Cherukupalli, Sudhakar Ellapragada. "Surface charge accumulation on spacers under switching impulses in sulphur hexafluoride gas." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26973.

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Metal encapsulation with compressed sulphur hexafluoride gas insulation has reduced the size of power substations and improved their reliability. Due to the superior insulating properties of this gas, its application in Gas Insulated Transmission lines (GITL) and Gas Insulated Substations (GIS) is increasing. Such systems invariably require solid support spacers for supporting high voltage conductors and for compartmentalizing sections of the systems. It has been found that, although the dielectric strength of sulphur hexafluoride is high compared to other gases, in the presence of a solid spa

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9

Zhou, Jianping. "A study of charge accumulation and spacer flashover in compressed gas insulation." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/32116.

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Compressed gas insulated substation (GIS) and transmission line (GITL) equipment have been developed rapidly throughout the world during the past decades. Compactness is the main advantage of GIS and GITL over conventional air-insulated substations and transmission lines. Sulphur hexafluoride (SF₆) is used as an insulation gas in GIS and GITL because of its excellent insulating properties. Supporting spacers are identified as the most likely places for flashover to occur and they often determine the overall strength of a system. For energized system, surface charges have been observed on space

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10

Okubo, Hitoshi, Fumihiro Endo, Naoki Hayakawa, Hiroki Kojima, Kanako Nishizawa, and Diaa-Eldin A. Mansour. "Charge accumulation effects on time transition of partial discharge activity at GIS spacer defects." IEEE, 2010. http://hdl.handle.net/2237/14529.

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11

Bonafè, Filippo. "Charge accumulation and transport in degenerately doped semiconducting polymers with mixed ionic and electronic conductivity." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21710/.

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This thesis is part of the fields of Material Physics and Organic Electronics and aims to determine the charge carrier density and mobility in the hydrated conducting polymer–polyelectrolyte blend PEDOT:PSS. This kind of material combines electronic semiconductor functionality with selective ionic transport, biocompatibility and electrochemical stability in water. This advantageous material properties combination makes PEDOT:PSS a unique material to build organic electrochemical transistors (OECTs), which have relevant application as amplifying transducers for bioelectronic signals. In order t

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12

Okubo, Hitoshi, Diaa-Eldin A. Mansour, Hiroki Kojima, Naoki Hayakawa, and Fumihiro Endo. "Surface charge accumulation and partial discharge activity for small gaps of electrode/epoxy interface in sf6 gas." IEEE, 2009. http://hdl.handle.net/2237/13944.

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13

Lopes, Ludovic. "Transfert de charge des aquahydroxocomplexes de fer (III) : mécanismes d'oxydation radicalaire de composés aliphatiques hydroxylés photoinduite par l'ion hexaaqua fer (III), réactivité des radicaux peroxyle, rendements quantiques de photoréduction." Poitiers, 2002. http://www.theses.fr/2002POIT2269.

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Le transfert de charge des principaux aquahydroxocomplexes de Fer(III) a été étudié par spectroscopie électronique. Les résultats obtenus, confrontés à ceux de calculs semi-empiriques, ont permis d'assigner le type de transitions, ainsi que les orbitales moléculaires impliquées. La photolyse de l'ion hexaaquafer(III) a par la suite été explorée à l'aide d'alcools aliphatiques, employés comme pièges à radicaux. En absence totale d'oxygène, la dégradation photoinduite de ces substrats, a fourni des méthodes convergentes de détermination de rendements quantiques. L'impact des radicaux péroxyle su

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14

Amiaud, Anne-Charlotte. "Modélisation du transport électronique et de l'accumulation de la charge dans les isolants en couches minces." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS004/document.

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Les matériaux diélectriques sont présents dans de nombreux dispositifs en microélectronique. Ces derniers peuvent être soumis à de fortes contraintes électriques impactant leur durée de vie. Le stress électrique peut en effet provoquer le claquage du diélectrique ou la modification des performances des composants par accumulation de charges. Dans ces travaux de thèse, différentes méthodes de caractérisation et d'analyse physique ont été utilisées pour étudier la structure des échantillons et identifier les mécanismes en jeu dans le processus d'accumulation de charges dans des couches minces de

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15

Okubo, Hitoshi, Diaa-Eldin A. Mansour, Hiroki Kojima, Naoki Hayakawa, and Fumihiro Endo. "Influence of accumulated surface charges on partial discharge activity at micro gap delamination in epoxy GIS spacer." IEEE, 2009. http://hdl.handle.net/2237/13942.

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16

Bahout, Mona. "Propriétés photophysiques de complexes polypyridine de Fe(II), Ru(II) et Os(II) : mise en évidence d'une localisation de l'électron dans les états excités de complexes 4-phényl-terpyridine de Ru(II)." Paris 11, 1989. http://www.theses.fr/1989PA112389.

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Ce mémoire porte sur l'étude des propriétés spectroscopiques, photo physiques et photochimiques ainsi que sur les calculs d'O. M. De complexes phényl-4'-terpyridine ( ptpy ), parasubstitués M(Xptpy)² ⁺/₂ (M =Fe(II), Ru(ll) ou Os (II) ;X =-OCH₃, CH₃, CI,-OH). La bande d'absorption visible MLCT des complexes Ru(Xptpy )² ⁺/₂ est plus intense et déplacée de 50 nm vers le rouge par rapport à celle de Ru(bpy)² ⁺/₃. Leur émission observée, à température ambiante, en solution et dans les membranes est très faible avec une durée de vie de quelques nanosecondes. Par spectroscopie éclair laser, nous avon

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17

Bowen, Martin. "Tranport Tunnel Polarisé en Spin à l'Etat Solide." Phd thesis, Université Paris Sud - Paris XI, 2003. http://tel.archives-ouvertes.fr/tel-00003921.

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Cette These experimentale examine le transport par effet tunnel entre deux couches ferromagnetiques separees par une barriere isolante ultrafine. L'enjeu de ces travaux est de rapprocher la comprehension theorique, basee sur des systemes ideaux, de la realite experimentale domin´ee par des jonctions comprenant une barriere amorphe. Au moyen de jonctions partiellement ou entierement epitaxiees integrant le materiau La0:7Sr0:3MnO3 dont nous avons confirme la polarisation de spin tunnel quasi-totale, l'influence de la structure electronique de materiaux isolants tels que SrTiO3, Ce0:69La0:31O1:84

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18

Pachoumi, Olympia. "Metal oxide/organic interface investigations for photovoltaic devices." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/246263.

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This thesis outlines investigations of metal oxide/organic interfaces in photo-voltaic devices. It focuses on device instabilities originating from the metal oxide layer surface sensitivity and it presents suggested mechanisms behind these in- stabilities. A simple sol-gel solution deposition technique for the fabrication of stable and highly performing transparent conducting mixed metal oxides (ZnMO) is presented. It is demonstrated that the use of amorphous, mixed metal oxides allows improving the performance and stability of interfacial charge extraction layers for organic solar cells. Two

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19

Pelčák, Jaromír. "Transport elektrického náboje v tantalovém kondenzátoru." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233579.

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The task of the thesis was studding of tantalum capacitors with solid electrolytes properties. Ta – Ta2O5 – MnO2 capacitor by its construction represents MIS structure, where tantalum anode has metal conductivity and MnO2 cathode is semiconductor. Isolation layer consists of tantalum pentoxide Ta2O5 with relative permitivity r = 27. Dielectric thickness is typically in range from 30 to 150nm. The capacitor charge is not only stored and accumulated on electrodes but also in localised states (oxide vacancies) in isolation layer. The capacitor connected in normal mode represents MIS structure po

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20

Yu-YingChen and 陳昱穎. "Study of the mechanism of charge accumulation in organic nonvolatile memories." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/6fy8kp.

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碩士<br>國立成功大學<br>光電科學與工程學系<br>100<br>Pentacene and N,N’-dioctadecy1-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C13H27) are used as active layers to fabricate organic non-volatile memory devices with various types of charge trapping layer. Several types of semiconductor film are used to determine the impact of surface morphology and electrical properties. In the first part, a single-layer structure that has a trapping layer, Polystyrene (Ps), and cross-linked poly (4-vinylphenol) (C-PVP) and a double-layer structure that has a modification layer and a trapping layer, PS + PS, C-PVP + Poly

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21

KRČKA, Pavel. "Fotovoltaické dobíjecí regulátory v ostrovních systémech." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-156255.

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This diploma thesis deals with photovoltaic rechargable regulators used in isolated, or off-grid photovoltaic systems. First, basic types of off-grid installations, including their functions and applications in practice are described. Then, possibilities of electric energy accumulation in photovoltaic systems are mentioned, considering actual, accesible technologies. Matters of electric energy accumulation in leaden accumulators are examined in detail. Main part of the diploma thesis is about electronic designs of photovoltaic, also called solar, rechargable regulators. These are the main conn

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