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Relevant bibliographies by topics / Chalcogenide quantum dots

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Dissertations / Theses

Academic literature on the topic 'Chalcogenide quantum dots'

Author: Grafiati

Published: 13 April 2024

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Dissertations / Theses on the topic "Chalcogenide quantum dots"

1

Wang, Zheng. "Synthesis, properties and applications of glasses containing chalcogenide quantum dots." Electronic Thesis or Diss., Université de Rennes (2023-....), 2023. http://www.theses.fr/2023URENS093.

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Dans cette thèse, la synthèse, les propriétés et les applications de verres contenant des quantum dots (QDs) de chalcogénure ont été étudiées. Des verres contenant des QDs à base de chalcogénure de plomb (PbSe ou PbS) ont été préparés. Leurs propriétés optiques et leurs applications potentielles ont été explorées en combinaison avec le co-dopage aux ions Tm3+. De plus, sur la base de ces résultats, des verres contenant des QDs de ZnS ou de ZnSe, sans plomb, ont été préparés avec succès. Leurs performances luminescentes ont été encore améliorées par dopage avec des ions de métaux de transition

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2

Schnitzenbaumer, Kyle J. "The Impact of Chalcogenide Ligands on the Photoexcited States of Cadmium Chalcogenide Quantum Dots." Thesis, University of Colorado at Boulder, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3704804.

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<p> Quantum dots (QDs) are the foundation of many optoelectronic devices because their optical and electronic properties are synthetically tunable. The inherent connection between synthetically controllable physical parameters, such as size, shape, and surface chemistry, and QD electronic properties provides flexibility in manipulating excited states. The properties of the ligands that passivate the QD surface and provide such synthetic control, however, are quite different from those that are beneficial for use in optoelectronic devices. In these applications, ligands that promote charge tran

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3

Schornbaum, Julia [Verfasser], and Jana [Akademischer Betreuer] Zaumseil. "Lead Chalcogenide Quantum Dots and Quantum Dot Hybrids for Optoelectronic Devices / Julia Schornbaum. Gutachter: Jana Zaumseil." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1082426415/34.

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4

Schornbaum, Julia Verfasser], and Jana [Akademischer Betreuer] [Zaumseil. "Lead Chalcogenide Quantum Dots and Quantum Dot Hybrids for Optoelectronic Devices / Julia Schornbaum. Gutachter: Jana Zaumseil." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://nbn-resolving.de/urn:nbn:de:bvb:29-opus4-68977.

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5

Lystrom, Levi Aaron. "Influence of Organic and Inorganic Passivation on the Photophysics of Cadmium Chalcogenide and Lead Chalcogenide Quantum Dots." Diss., North Dakota State University, 2020. https://hdl.handle.net/10365/31926.

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Quantum dots (QDs) are promising materials for photovoltaic (PV) and light-emitting diode (LED) applications due to their unique properties: photostability, size-tunable absorptivity, and narrow line-width emission. These properties are tailored by surface passivations by ligands. However, ligands used in the synthesis of colloidal QDs need to be exchanged with ligands designed for specific applications. The mechanism behind ligand exchange is not well understood. Density functional theory (DFT) is utilized to gain fundamental understanding of ligand exchange (LE) and the resulting effect on t

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6

Page, Robert Christopher. "Synthesis of cadmium chalcogenide based quantum dots for enhanced multiple exciton generation." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/synthesis-of-cadmium-chalcogenide-based-quantum-dots-for-enhanced-multiple-exciton-generation(0e0f2e8d-ea7f-42dc-abef-f230e20eabe5).html.

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Quantum dots (QDs) have the potential to produce more than one exciton per incident photon, if the photon energy is greater than twice the band gap energy. This process of multiple exciton generation (MEG) has the potential to lead to a step change in the efficiency of solar panels, by utilising energy commonly wasted as heat in conventional solar cells. A wide range of CdSe/CdTe and CdTe/CdSe quantum dots with and without a CdS shell were synthesised with varying core sizes and shell thicknesses. The excited state dynamics of these samples were studied with transient absorption and photolumin

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7

Thiagarajan, Suraj Joottu. "Thermoelectric properties of rare-earth lead selenide alloys and lead chalcogenide nanocomposites." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196263620.

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8

Nxusani, Ezo. "Synthesis and analysis of Novel Platinum group Metal Chalcogenide Metal Quantum Dot and Electrochemical Markers." University of the Western Cape, 2018. http://hdl.handle.net/11394/6424.

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Magister Scientiae - MSc (Chemistry)<br>Although cadmium and lead chalcogenide quantum dot have excellent optical and photoluminescent properties that are highly favorable for biological applications, there still exists increasing concerns due to the toxicity of these metals. We, therefore, report the synthesis of new aqueous soluble IrSe quantum dot at room temperature utilizing a bottom-up wet chemistry approach. NaHSe and H2IrCl6 were utilized as the Se and Ir source, respectively. High-resolution transmission electron microscopy reveals that the synthesized 3MPA-IrSe Qd are 3 nm in diamete

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9

Akdas, Tugce [Verfasser], and Wolfgang [Gutachter] Peukert. "Colloidal Semiconductor Nanocrystals: The Interplay of Process Steps and Product Properties for the Case of non-toxic Compound Chalcogenide Quantum Dots / Tugce Akdas ; Gutachter: Wolfgang Peukert." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2017. http://d-nb.info/1129455106/34.

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10

Chassin, de Kergommeaux Antoine. "Synthèse de nouveaux types de nanocristaux semi-conducteurs pour application en cellules solaires." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENV057/document.

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Pour que l'énergie photovoltaïque devienne compétitive, les coûts de production doivent être baissés et l'efficacité des cellules augmentée. Les cellules solaires à base de nanocristaux semi-conducteurs constituent une approche prometteuse pour remplir ces objectifs combinant une mise en œuvre par voie liquide avec la possibilité d'ajuster précisément la largeur de bande interdite et les niveaux électroniques. Aujourd'hui, les rendements de conversion des cellules constituées de nanocristaux de sulfure de plomb approchent les 7%. Seulement, à cause des normes européennes destinées à l'affranch

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