Littérature scientifique sur le sujet « Quantum Dots - SiOx Matrix »
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Articles de revues sur le sujet "Quantum Dots - SiOx Matrix"
Han, Li Hao, Jing Wang et Ren Rong Liang. « Germanium-Silicon Quantum Dots Produced by Pulsed Laser Deposition for Photovoltaic Applications ». Advanced Materials Research 383-390 (novembre 2011) : 6270–76. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6270.
Texte intégralZhang, X. H., Soo Jin Chua, A. M. Yong, S. Y. Chow, H. Y. Yang, S. P. Lau, S. F. Yu et X. W. Sun. « Fabrication and Optical Properties of ZnO Quantum Dots ». Advanced Materials Research 31 (novembre 2007) : 71–73. http://dx.doi.org/10.4028/www.scientific.net/amr.31.71.
Texte intégralYazicioglu, Deniz, Sebastian Gutsch et Margit Zacharias. « (Invited) Size Controlled Silicon Quantum Dots : Understanding Basic Properties and Electronic Applications ». ECS Meeting Abstracts MA2022-01, no 20 (7 juillet 2022) : 1077. http://dx.doi.org/10.1149/ma2022-01201077mtgabs.
Texte intégralZhang, X. H., S. J. Chua, A. M. Yong, S. Y. Chow, H. Y. Yang, S. P. Lau et S. F. Yu. « Exciton radiative lifetime in ZnO quantum dots embedded in SiOx matrix ». Applied Physics Letters 88, no 22 (29 mai 2006) : 221903. http://dx.doi.org/10.1063/1.2207848.
Texte intégralHuang, Jie, Jian Liang Jiang et Abdelkader Sabeur. « Application of Finite Difference Method in Modeling Quantum Dot Superlattice Silicon Tandem Solar Cell ». Advanced Materials Research 898 (février 2014) : 249–52. http://dx.doi.org/10.4028/www.scientific.net/amr.898.249.
Texte intégralKuryliuk, Vasyl, Andriy Nadtochiy, Oleg Korotchenkov, Chin-Chi Wang et Pei-Wen Li. « A model for predicting the thermal conductivity of SiO2–Ge nanoparticle composites ». Physical Chemistry Chemical Physics 17, no 20 (2015) : 13429–41. http://dx.doi.org/10.1039/c5cp00129c.
Texte intégralYi, Dong Kee. « Synthesis and Applications of Crack-Free SiO2 Monolith Containing CdSe/ZnS Quantum Dots as Passive Lighting Sources ». Journal of Nanoscience and Nanotechnology 8, no 9 (1 septembre 2008) : 4538–42. http://dx.doi.org/10.1166/jnn.2008.ic46.
Texte intégralSamanta, Arup, et Debajyoti Das. « Effect of RF power on the formation and size evolution of nC-Si quantum dots in an amorphous SiOx matrix ». Journal of Materials Chemistry 21, no 20 (2011) : 7452. http://dx.doi.org/10.1039/c1jm10443h.
Texte intégralXu, C. S., Y. C. Liu, R. Mu, C. Muntele et D. Ila. « Structural and optical properties of GaAs quantum dots formed in SiO2 matrix ». Materials Letters 61, no 14-15 (juin 2007) : 2875–78. http://dx.doi.org/10.1016/j.matlet.2007.01.073.
Texte intégralSlunjski, R., P. Dubček, N. Radić, S. Bernstorff et B. Pivac. « Structure and transport properties of Ge quantum dots in a SiO2 matrix ». Journal of Physics D : Applied Physics 48, no 23 (14 mai 2015) : 235301. http://dx.doi.org/10.1088/0022-3727/48/23/235301.
Texte intégralThèses sur le sujet "Quantum Dots - SiOx Matrix"
Little, William Robert. « Structure of, and light emission in, matrix-free Germanium quantum dots ». Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8954.
Texte intégralOkrepka, G. M. « Influence of the matrix on the photoluminescence propeties of quantum dots ». Thesis, БДМУ, 2021. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/18527.
Texte intégralHussain, Laiq§. « Characterization of InSb quantum dots in InAs matrix grown by molecular beam epitaxy for infrared photodetectors ». Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-52901.
Texte intégralZell, Elizabeth T. « A Novel Synthesis and Characterization of Copper Chloride Nanocrystals in a Sodium Chloride Matrix ». Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1387281922.
Texte intégralNdangili, Peter Munyao. « Electrochemical and optical modulation of selenide and telluride ternary alloy quantum dots genosensors ». Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/4025.
Texte intégralElectroanalytical and optical properties of nanoscale materials are very important for biosensing applications as well as for understanding the unique one-dimensional carrier transport mechanism. One-dimensional semiconductor nanomaterials such as semiconductor quantum dots are extremely attractive for designing high-density protein arrays. Because of their high surfaceto-volume ratio, electro-catalytic activity as well as good biocompatibility and novel electron transport properties make them highly attractive materials for ultra-sensitive detection of biological macromolecules via bio-electronic or bio-optic devices. A genosensor or gene based biosensor is an analytical device that employs immobilized deoxyribonucleic acid (DNA) probes as the recognition element and measures specific binding processes such as the formation of deoxyribonucleic acid-deoxyribonucleic acid (DNA-DNA), deoxyribonucleic acid- ribonucleic acid (DNA-RNA) hybrids, or the interactions between proteins or ligand molecules with DNA at the sensor surface.In this thesis, I present four binary and two ternary-electrochemically and optically modulated selenide and telluride quantum dots, all synthesised at room temperature in aqueous media. Cationic gallium (Ga3+) synthesized in form of hydrated gallium perchlorate salt[Ga(ClO4)3.6H2O] from the reaction of hot perchloric acid and gallium metal was used to tailor the optical and electrochemical properties of the selenide and telluride quantum dots. The synthesized cationic gallium also allowed successful synthesis of novel water soluble and biocompatible capped gallium selenide nanocrystals and gallium telluride quantum dots. Cyclic voltammetric studies inferred that presence of gallium in a ZnSe-3MPA quantum dot lattice improved its conductivity and significantly increased the electron transfer rate in ZnTe-3MPA.Utraviolet-visible (UV-vis) studies showed that incorporation of gallium into a ZnSe-3MPA lattice resulted in a blue shift in the absorption edge of ZnSe-3MPA from 350 nm to 325 nm accompanied by decrease in particle size. An amphiphilic bifunctional molecule, 3-Mercaptopropionic acid (3-MPA) was used as a capping agent for all quantum dots. It was found that 3-MPA fully solubilised the quantum dots, made them stable, biocompatible, non agglomerated and improved their electron transfer kinetics when immobilized on gold electrodes.Retention of the capping agent on the quantum dot surface was confirmed by Fourier transform infrared spectroscopy (FTIR) which gave scissor type bending vibrations of C-H groups in the region 1365 cm-1 to 1475 cm-1, stretching vibrations of C=O at 1640 cm-1, symmetric and asymmetric vibrations of the C-H in the region 2850 cm-1 to 3000 cm-1 as well as stretching vibrations of –O-H group at 3435 cm-1. The particle size and level of non-agglomeration of the quantum dots was studied by high resolution transmission electron microscopy (HRTEM). The optical properties of the quantum dots were studied using UV-vis and fluorescence spectroscopic techniques.Quantum dot/nanocrystal modified gold electrodes were prepared by immersing thoroughly cleaned electrodes in the quantum dot/nanocrystal solution, in dark conditions for specific periods of time. The electrochemical properties of the modified electrodes were characterized by cyclic voltammetry (CV), square wave voltammetry (SWV), electrochemical impedance and spectroscopy (EIS). Six sensing platforms were then prepared using quantum dot/nanocrystal, one of which was used for detection of dopamine while the rest were used for detection of a DNA sequence related to 5-enolpyruvylshikimate-3-phosphate synthase, a common vector gene in glyphosate resistant transgenic plants.The first sensing platform, consisting of ZnSe-3MPA modified gold electrode (Au|ZnSe-3MPA) gave rise to a novel method of detecting dopamine in presence of excess uric acid and ascorbic acid. Using a potential window of 0 to 400 mV, the ZnSe-3MPA masked the potential for oxidation of uric and ascorbic acids, allowing detection of dopamine with a detection limit of 2.43 x 10-10 M (for SWV) and 5.65 x 10-10 M (for steady state amperometry), all in presence of excess uric acid (>6500 higher) and ascorbic acid (>16,000 times higher). The detection limit obtained in this sensor was much lower than the concentration of dopamine in human blood(1.31 x 10-9 M), a property that makes this sensor a potential device for detection of levels of dopamine in human blood.The other sensing platforms were prepared by bioconjugation of amine-terminated 20 base oligonucleotide probe DNA (NH2-5′-CCC ACC GGT CCT TCA TGT TC-3′) onto quantum dot modified electrodes with the aid of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). The prepared DNA electrodes were electrostatically hybridized with different sequences which included 5′-GAA CAT GAA GGA CCG GTG GG-3′ (complementary target), 5′-CATAGTTGCAGCTGCCACTG-3′ (non complementary target) and 5′-GATCATGAAGCACCGGAGGG-3′ (3-base mismatched target).The hybridization events were monitored using differential pulse voltammetry (DPV) and SWV by monitoring the guanine oxidation signal or using EIS by monitoring changes in the charge transfer resistance. The quantum dot genosensors were characterized by low detection limits (in the nanomolar range), long linear range (40 - 150 nM) and were able to discriminate among complementary, non-complementary and 3-base mismatched target sequences.
Liyanage, Geethika Kaushalya. « Infrared Emitting PbS Nanocrystals through Matrix Encapsulation ». Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1403953924.
Texte intégralSala, Elisa Maddalena [Verfasser], Dieter [Akademischer Betreuer] Bimberg, Xavier [Gutachter] Wallart et Dieter [Gutachter] Bimberg. « Growth and characterization of antimony-based quantum dots in GaP matrix for nanomemories / Elisa Maddalena Sala ; Gutachter : Xavier Wallart, Dieter Bimberg ; Betreuer : Dieter Bimberg ». Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1161007008/34.
Texte intégralShiman, Dmitriy I., Vladimir Sayevich, Christian Meerbach, Pavel A. Nikishau, Irina V. Vasilenko, Nikolai Gaponik, Sergei V. Kostjuk et Vladimir Lesnyak. « Robust Polymer Matrix Based on Isobutylene (Co)polymers for Efficient Encapsulation of Colloidal Semiconductor Nanocrystals ». American Chemical Association, 2019. https://tud.qucosa.de/id/qucosa%3A74322.
Texte intégralBaronnier, Justine. « Encapsulation de nanocristaux II-VI dans une matrice semiconductrice de pérovskite hybride d’halogénure de plomb en vue de la création d’un dispositif de contrôle du clignotement ». Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1297.
Texte intégralTo construct a device for controlling the blinking of nanocrystals, it was necessary to create a solid-state active material that can be integrated in such an apparatus. To this end, we have encapsulated cadmium-based quantum dots (QDs) in a crystalline matrix of a hybrid lead-bromide perovskite. This manuscript describes all the steps that have been undertaken to achieve the creation of this new composite. We have developed a synthesis of QDs that are resistant to encapsulation in an ionic matrix by means of an organic-inorganic ligand exchange that allowed us to integrate nanocrystals into the matrix while conserving their luminescence properties. We were thus able to document efficient encapsulation and a coupling between the QDs and the matrix. These two characteristics are favorable for using this composite in a control device which ultimately aims at optically following the luminescence of the BQs and applying an electric field to extract and evacuate the excess charges responsible for the nonemissive state. The successful completion of this step will enable us in the future to study the phenomenon of blinking and, more importantly, to construct a stable on-demand single-photon source
Oliveira, Elenilda Josefa de. « Transporte quântico decoerente em sistemas mesoscópicos ». Universidade Federal de Sergipe, 2015. https://ri.ufs.br/handle/riufs/5363.
Texte intégralThe scientific advances we have experienced in recent decades have enabled us to produce systems in the mesoscopic scale. These systems have become very useful as research tools in various areas of science. In mesoscopic physics the ondulatory characteristic of electrons is more evident than in classical physics and the electron conduction process is better represented by the wave function that describes it. Examples of application of mesoscopic systems are quantum dots which are open cavities where electrons are limited to flow through. Thus, the objective of this work is to study the effects of decoherence in the transport of electrons in two systems: i) quantum dot with a fictitious guide and ii) quantum dot with stub, where we take into account ondulatory properties of electrons. The formalism that we use is the scattering matrix, which relates the incoming and outgoing amplitudes in the scattering of waves coming in and out of the scattering region. Since the studied systems are chaotic, the scattering matrices can be treated as random. These matrices were generated by computational simulation and then the conductance values were computed. The conductance distribution was obtained by means of probabilistic analysis.
Os avanços científicos que temos experimentado nas últimas décadas proporcionaram a construção de sistemas em escala mesoscópica. Esses sistemas tornaram-se muito úteis como ferramentas de investigação em diversas áreas da ciência. Na física mesoscópica a característica ondulatória dos elétrons é mais evidente do que na física clássica e o processo de condução dos elétrons é melhor representado pela função de onda que os descreve. Exemplos da aplicação de sistemas mesoscópicos são os pontos quânticos que são cavidades abertas por onde os elétrons são limitados a fluirem. Dessa forma, o objetivo deste trabalho é estudar os efeitos da decoerência no transporte de elétrons em dois sistemas: i) ponto quântico com guia fictício e ii) ponto quântico com estube, onde levamos em consideração as propriedades ondulatórias dos elétrons. O formalismo que utilizamos é o da matriz de espalhamento, a qual relaciona as amplitudes das ondas que entram e saem da região de espalhamento. Como os sistemas estudados são caóticos, as matrizes de espalhamento podem ser tratadas como aleatórias. Geramos estas matrizes por meio de simulação computacional e delas extraímos a condutância do sistema. A distribuição da condutância foi obtida por meio de uma análise probabilística.
Livres sur le sujet "Quantum Dots - SiOx Matrix"
Towe, E., et D. Pal. Intersublevel quantum-dot infrared photodetectors. Sous la direction de A. V. Narlikar et Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.7.
Texte intégralFyodorov, Yan, et Dmitry Savin. Condensed matter physics. Sous la direction de Gernot Akemann, Jinho Baik et Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.35.
Texte intégralChapitres de livres sur le sujet "Quantum Dots - SiOx Matrix"
Leitsmann, R., et F. Bechstedt. « Ab-initio Characterization of Electronic Properties of PbTe Quantum Dots Embedded in a CdTe Matrix ». Dans High Performance Computing in Science and Engineering '10, 135–47. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-15748-6_10.
Texte intégralRacec, P. N., E. R. Racec et H. Neidhardt. « R-matrix Formalism for Electron Scattering in Two Dimensions with Applications to Nanostructures with Quantum Dots ». Dans Engineering Materials, 149–74. Berlin, Heidelberg : Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12070-1_7.
Texte intégralFortunati, I., S. Gardin, F. Todescato, R. Signorini, R. Bozio, J. J. Jasieniak, A. Martucci et al. « One- and Two-Photon Pumped DFB Laser Based on Semiconductor Quantum Dots Embedded in a Sol-Gel Matrix ». Dans Biophotonics : Spectroscopy, Imaging, Sensing, and Manipulation, 415–16. Dordrecht : Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9977-8_44.
Texte intégralHeidarzadeh, Hamid, Ghassem Rostami, Mahboubeh Dolatyari et Ali Rostami. « Comparison the Effect of Size and Inter-dot Spaces in Different Matrix Embedded Silicon Quantum Dots for Photovoltaic Applications ». Dans 2nd International Congress on Energy Efficiency and Energy Related Materials (ENEFM2014), 77–83. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16901-9_10.
Texte intégralBailes, Julian, et Mikhail Soloviev. « The Application of Semiconductor Quantum Dots for Enhancing Peptide Desorption, Improving Peak Resolution and Sensitivity of Detection in Matrix-Assisted Laser Desorption/Ionization (MALDI) Mass Spectrometry ». Dans Nanoparticles in Biology and Medicine, 211–17. Totowa, NJ : Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-953-2_16.
Texte intégralVerma, A., P. K. Bhatnagar, P. C. Mathur, S. Nagpal, P. K. Pandey et J. Kumar. « Development of Low Size Dispersion, High Volume Fraction and Strong Quantum Confined CdSxSe1-x Quantum Dots Embedded in Borosilicate Glass Matrix and Study of their Optical Properties ». Dans Semiconductor Photonics : Nano-Structured Materials and Devices, 161–63. Stafa : Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-471-5.161.
Texte intégralSingh, Babita, Sonali Singhal et Tanzeel Ahmed. « Cosmetic and Medical Applications of Fungal Nanotechnology ». Dans Mycology : Current and Future Developments, 238–58. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051360122030013.
Texte intégralIgor, Vurgaftman. « Superlattice and Quantum-Well Band Structure ». Dans Bands and Photons in III-V Semiconductor Quantum Structures, 303–42. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198767275.003.0010.
Texte intégralMaxwell Andrews, Aaron, Matthias Schramböck et Gottfried Strasser. « InAs Quantum Dots on AlxGa1−xAs Surfaces and in an AlxGa1−xAs Matrix ». Dans Handbook of Self Assembled Semiconductor Nanostructures for Novel Devices in Photonics and Electronics, 62–83. Elsevier, 2008. http://dx.doi.org/10.1016/b978-0-08-046325-4.00002-5.
Texte intégralAntolini, F., et L. Ortolani. « CdTe QUANTUM DOTS NANOCOMPOSITE FILMS OBTAINED BY THERMAL DECOMPOSITION OF PRECURSORS EMBEDDED IN POLYMERIC MATRIX ». Dans Physics, Chemistry and Application of Nanostructures, 349–52. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813224537_0080.
Texte intégralActes de conférences sur le sujet "Quantum Dots - SiOx Matrix"
Panigrahi, Shrabani, Durga Basak, Alka B. Garg, R. Mittal et R. Mukhopadhyay. « Emission Properties from ZnO Quantum Dots Dispersed in SiO[sub 2] Matrix ». Dans SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3606317.
Texte intégralTsang, W. M., V. Stolojan, B. J. Sealy, S. P. Wong et S. R. P. Silva. « Electron Field Emission Properties of Co Quantum Dots in SiO2 Matrix Synthesised by Ion Implantation ». Dans 2006 19th International Vacuum Nanoelectronics Conference. IEEE, 2006. http://dx.doi.org/10.1109/ivnc.2006.335345.
Texte intégralLiang, Yu, Yan Jia, Yichun Liu, Yuxue Liu, De Z. Shen, Yuling Sun et Zhongmin Su. « Mechanism of formation and photoluminescence of Si quantum dots embedded in amorphous SiO 2 matrix ». Dans 4th International Conference on Thin Film Physics and Applications, sous la direction de Junhao Chu, Pulin Liu et Yong Chang. SPIE, 2000. http://dx.doi.org/10.1117/12.408423.
Texte intégralDi, Dawei, Ivan Perez-Wurfl, Gavin Conibeer et Martin A. Green. « Fabrication and characterisation of silicon quantum dots in SiO 2 /Si 3 N 4 hybrid matrix ». Dans SPIE Solar Energy + Technology, sous la direction de Loucas Tsakalakos. SPIE, 2010. http://dx.doi.org/10.1117/12.859715.
Texte intégralKaplan, L., Y. Alhassid, Pawel Danielewicz, Piotr Piecuch et Vladimir Zelevinsky. « Interaction matrix element fluctuations in quantum dots ». Dans NUCLEI AND MESOSCOPIC PHYSICS : Workshop on Nuclei and Mesoscopic Physic - WNMP 2007. AIP, 2008. http://dx.doi.org/10.1063/1.2915599.
Texte intégralKar, Debjit, et Debajyoti Das. « Silicon quantum dots in SiOx dielectrics as energy selective contacts in hot carrier solar cells ». Dans NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4917926.
Texte intégralLai, Bo-Han, Chih-Hsien Cheng et Gong-Ru Lin. « Influence of the thickness variation of the SiOx layer on the Si Quantum Dots based MOSLED ». Dans Asia Communications and Photonics Conference and Exhibition. Washington, D.C. : OSA, 2010. http://dx.doi.org/10.1364/acp.2010.798703.
Texte intégralLai, Bo-Han, Chih-Hsien Cheng et Gong-Ru Lin. « Influence of the thickness variation of the SiOx layer on the Si quantum dots based MOSLED ». Dans 2010 Asia Communications and Photonics Conference and Exhibition (ACP 2010). IEEE, 2010. http://dx.doi.org/10.1109/acp.2010.5682837.
Texte intégralZhao, Xudong, Wenlong Ma et Xianghua 未. Wang. « Optical properties of CsPbBr3 quantum dots in PMMA matrix ». Dans International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), sous la direction de Yabo Fu et Kolla Bhanu Prakash. SPIE, 2023. http://dx.doi.org/10.1117/12.2686941.
Texte intégralMoiseev, K. D., M. P. Mikhailova, Ya A. Parkhomenko, E. V. Gushchina, S. S. Kizhaev, E. V. Ivanov, N. A. Bert et Yu P. Yakovlev. « InSb quantum dots and quantum rings in a narrow-gap InAsSbP matrix ». Dans SPIE OPTO : Integrated Optoelectronic Devices, sous la direction de Kurt G. Eyink, Frank Szmulowicz et Diana L. Huffaker. SPIE, 2009. http://dx.doi.org/10.1117/12.809312.
Texte intégralRapports d'organisations sur le sujet "Quantum Dots - SiOx Matrix"
Oktyabrsky, Serge. Performance of Scintillation Detectors Based on Quantum Dots in a Semiconductor Matrix (Final Technical Report). Office of Scientific and Technical Information (OSTI), décembre 2020. http://dx.doi.org/10.2172/1756058.
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