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Littérature scientifique sur le sujet « Nanocrystals Synthesis »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 6 septembre 2023

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Articles de revues sur le sujet "Nanocrystals Synthesis"

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Mohammadrezaee, Mohammad, Naser Hatefi-Kargan et Ahmadreza Daraei. « Enhancing crystal quality and optical properties of GaN nanocrystals by tuning pH of the synthesis solution ». Zeitschrift für Naturforschung A 75, no 6 (26 mai 2020) : 551–56. http://dx.doi.org/10.1515/zna-2019-0378.

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AbstractGallium nitride nanocrystals as a wide bandgap semiconductor material for optoelectronic applications can be synthesized using chemical methods. In this research using co-precipitation and nitridation processes gallium nitride nanocrystals have been synthesized, and by tuning pH of the synthesis solution at the co-precipitation step, crystal quality and optical property of the resultant gallium nitride nanocrystals have been enhanced. Gallium nitride nanocrystal samples were synthesized using solutions with pH values of 2.1, 4.8, 7.8, and 9.0, and then nitridation at 950 °C under the flow of ammonia gas. The synthesized nanocrystal samples were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and photoluminescence techniques. The XRD data show that the nanocrystals have hexagonal wurtzite crystal structure, and using Scherer’s equation the sizes of the synthesized nanocrystals are 23.6, 26.6, 19.7, and 10.4 nm for the samples synthesized using the solutions with pH values of 2.1, 4.8, 7.8, and 9.0 respectively. The sizes of the nanocrystals obtained from SEM images are larger than the values obtained using Scherer’s equation, due to the aggregation of nanocrystals. EDX spectra show that pH of the synthesis solution affects the elemental stoichiometry of the gallium nitride nanocrystals. We obtained better stoichiometry for the nanocrystal sample synthesized using solution with the pH of 4.8. Photoluminescence spectra show that for this sample the emission intensity is higher than the others.
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Lin, Weyde M. M., Maksym Yarema, Mengxia Liu, Edward Sargent et Vanessa Wood. « Nanocrystal Quantum Dot Devices : How the Lead Sulfide (PbS) System Teaches Us the Importance of Surfaces ». CHIMIA International Journal for Chemistry 75, no 5 (28 mai 2021) : 398–413. http://dx.doi.org/10.2533/chimia.2021.398.

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Semiconducting thin films made from nanocrystals hold potential as composite hybrid materials with new functionalities. With nanocrystal syntheses, composition can be controlled at the sub-nanometer level, and, by tuning size, shape, and surface termination of the nanocrystals as well as their packing, it is possible to select the electronic, phononic, and photonic properties of the resulting thin films. While the ability to tune the properties of a semiconductor from the atomistic- to macro-scale using solution-based techniques presents unique opportunities, it also introduces challenges for process control and reproducibility. In this review, we use the example of well-studied lead sulfide (PbS) nanocrystals and describe the key advances in nanocrystal synthesis and thin-film fabrication that have enabled improvement in performance of photovoltaic devices. While research moves forward with novel nanocrystal materials, it is important to consider what decades of work on PbS nanocrystals has taught us and how we can apply these learnings to realize the full potential of nanocrystal solids as highly flexible materials systems for functional semiconductor thin-film devices. One key lesson is the importance of controlling and manipulating surfaces.
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Komarov, Fadey, Altynay Togambayeva, Ludmila Vlasukova, Irina Parkhomenko, Oleg Milchanin, Maksim Makhavikov et Murat Tolkynay. « Ion-Beam Synthesis of InSb Nanocrystals in Si Matrix ». Advanced Materials Research 679 (avril 2013) : 9–13. http://dx.doi.org/10.4028/www.scientific.net/amr.679.9.

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The results of structural and optical investigation of crystalline Si with embedded InSb nanocrystals are reported. These nanocrystals were synthesized in silicon matrix by means of high-fluence “hot” implantation of Sb and In ions followed by thermal treatment. TEM gives an evidence of nanocrystal formation in implanted and annealed samples as well as an existence of microtwins and dislocation-type defects and substantial residual mechanical strains. We have identified nanocrystals as InSb from RS data. Mechanical strains in “silicon – InSb nanocrystals” system have been evaluated, too.
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Svrcek, Vladimir. « (Invited) Atmospheric Plasmas Synthesized Nanocrystals with Quantum Confinement and Quantum Hybrids in Photovoltaics ». ECS Meeting Abstracts MA2022-02, no 19 (9 octobre 2022) : 889. http://dx.doi.org/10.1149/ma2022-0219889mtgabs.

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Nanocrystals share lot of advantages of organics namely scalable and controlled synthesis, an ability to be processed in solution while additionally retaining the broadband absorption and superior transport properties of traditional photovoltaic semiconductors. Nanocrystal solar cells have the potential to considerably increase the maximum attainable thermodynamic conversion efficiency (> 50%). Nanocrystal solution-processed can be used in solar cell structure not only as an absorber but also as electron and hole transport layer where the HOMO and LUMO levels can be efficiently controlled by size and/or plasma induced surface engineering directly in colloidal solution. Solution-processed and surface engineered nanocrystals with quantum confinement can be then further used to fabricate new class of quantum hybrids when blended for instance with polymers or perovskites and serves as absorbing and/or e-h transporting material. In this presentation, we overview the atmospheric plasma-based approaches to synthesis and surface engineering of nanocrystals with quantum confinement. We will compare surface engineering by fs laser processing in liquid solutions and synthesis of nanocrystals with strong quantum confinement by atmospheric plasmas. Moreover, to understand the thermal stability of nanocrystals observed experimentally, we calculate the cohesive and the formation energies of nanocrystals by means of first-principle calculations. Finally, we overview our recent progress in integration of surface engineered nanocrystal as a quantum hybrids incorporated within perovskites solar cells.
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Kim, Jong Ung, Jeong A. Lee, Beyong Hwan Ryu, Ki Won Jun, In Ho Kim et Young Min Choi. « Synthesis and Characterization of PbSe Nanocrystals by a Microchannel Reactor ». Solid State Phenomena 124-126 (juin 2007) : 1285–88. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1285.

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The synthesis of high-quality monodispersed nanocrystal is very important. Typical synthetic method is rapid nucleation by injection of an organometallic precursor into a solvent maintaining the reaction temperature. Since these methods are discontinuous processes, they are not efficient for large-scale production of monodisperse nanocrystals. In this study, continuous microchannel reaction technique is presented for synthesis of monodisperse lead selenide nanocrystals in a diphenyl ether as high-temperature organic media. The microchannel reactor was used due to its possibility of continuous process and reproducibility of narrow size distribution in nanocrystal synthesis. The synthesis was carried out in microchannel reactor (800 μm diameter) made from PTFE. Lead oleate and TOP-Se were used as organic precursor and diphenyl ether as high-temperature organic solvents. Lead selenide particles with a size of less than 10nm could be continuously prepared by this method. The nanocrystals have been characterized by X-ray diffraction, TEM and optical absorption spectrometer.
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Feng, Anni, Jiankang Cao, Junying Wei, Feng Chang, Yang Yang et Zongyuan Xiao. « Facile Synthesis of Silver Nanoparticles with High Antibacterial Activity ». Materials 11, no 12 (8 décembre 2018) : 2498. http://dx.doi.org/10.3390/ma11122498.

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We report on a reverse microemulsion method for the synthesis of silver nanocrystals and examine their antibacterial activities. As the molar ratio of water to sodium bis(2-ethylhexyl) sulfosuccinate (AOT) increases to 25, a morphology transition from a sphere-like nanocrystal to a wire-like one was observed. For both the gram-negative and gram-positive bacteria, the wire-like silver nanocrystal showed higher antibacterial activities. We conclude that the morphology of silver nanocrystals dominates their antibacterial activity.
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Xiong, Zichang, Himashi P. Andaraarachchi, Jacob T. Held, Rick W. Dorn, Yong-Jin Jeong, Aaron Rossini et Uwe R. Kortshagen. « Inductively Coupled Nonthermal Plasma Synthesis of Size-Controlled γ-Al2O3 Nanocrystals ». Nanomaterials 13, no 10 (12 mai 2023) : 1627. http://dx.doi.org/10.3390/nano13101627.

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Gamma alumina (γ-Al2O3) is widely used as a catalyst and catalytic support due to its high specific surface area and porosity. However, synthesis of γ-Al2O3 nanocrystals is often a complicated process requiring high temperatures or additional post-synthetic steps. Here, we report a single-step synthesis of size-controlled and monodisperse, facetted γ-Al2O3 nanocrystals in an inductively coupled nonthermal plasma reactor using trimethylaluminum and oxygen as precursors. Under optimized conditions, we observed phase-pure, cuboctahedral γ-Al2O3 nanocrystals with defined surface facets. Nuclear magnetic resonance studies revealed that nanocrystal surfaces are populated with AlO6, AlO5 and AlO4 units with clusters of hydroxyl groups. Nanocrystal size tuning was achieved by varying the total reactor pressure yielding particles as small as 3.5 nm, below the predicted thermodynamic stability limit for γ-Al2O3.
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Chernomordik, B. D., A. E. Béland, N. D. Trejo, A. A. Gunawan, D. D. Deng, K. A. Mkhoyan et E. S. Aydil. « Rapid facile synthesis of Cu2ZnSnS4 nanocrystals ». J. Mater. Chem. A 2, no 27 (2014) : 10389–95. http://dx.doi.org/10.1039/c4ta01658k.

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A method for rapid synthesis of 2–40 nm diameter nanocrystal dispersions of the emerging sustainable thin-film solar absorber copper zinc tin sulfide is reported: the average crystals size is controlled by varying the synthesis temperature between 150 °C and 340 °C. Films cast from larger nanocrystals, are crack-free and suitable for making thin film solar cells.
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Gao, Yukun, et PG Yin. « Synthesis of cubic CdSe nanocrystals and their spectral properties ». Nanomaterials and Nanotechnology 7 (1 janvier 2017) : 184798041770174. http://dx.doi.org/10.1177/1847980417701747.

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The cadmium selenide nanocrystals are prepared by colloidal chemistry under mild conditions. X-ray diffraction and high-resolution transmission electron microscopy measurements indicate that as-prepared cadmium selenide nanocrystals are zinc blende cubic structure. We carry out an analysis of quantum size effect in the Raman spectra of cadmium selenide nanocrystals performed by utilizing the chemical bond theory of Raman peak shift developed recently. It is revealed that the shifts of Raman peaks in cadmium selenide nanocrystals result from the overlapping of the quantum effect shifts and surface effect shifts. The sizes of the as-prepared cadmium selenide nanocrystals obtained by employing the Raman peak shift theory are in good agreement with the nanocrystal sizes determined by high-resolution transmission electron microscopy.
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Della Gaspera, Enrico, Noel W. Duffy, Joel van Embden, Lynne Waddington, Laure Bourgeois, Jacek J. Jasieniak et Anthony S. R. Chesman. « Plasmonic Ge-doped ZnO nanocrystals ». Chemical Communications 51, no 62 (2015) : 12369–72. http://dx.doi.org/10.1039/c5cc02429c.

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Thèses sur le sujet "Nanocrystals Synthesis"

1

Zhang, Jun. « Shape control in synthesis of functional nanocrystals ». Diss., Online access via UMI:, 2009.

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Dinega, Dmitry P. (Dmitry Petrovich) 1969. « Synthesis and characterization of cobalt nanocrystals ». Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8250.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2001.
Includes bibliographical references.
Although several theoretical models for the behavior of magnetic crystals smaller than a single domain size were developed in the 1950's and 60's, they have hardly been verified experimentally because of the lack of appropriate material systems. This thesis is an attempt to develop such a system using metallic cobalt as a magnetic material and to verify its magnetic behavior in the context of a Stoner-Wohlfarth model of coherent rotation. The problem of preparing crystals of a desired shape and the effect of the crystal shape on its magnetic properties is also addressed. Cobalt nanocrystals are prepared by thermal decomposition of dicobalt octacarbonyl in solution and in the presence of suitable surfactants and coordinating ligands, which influence the shape of the resulting crystals as well as their internal structure. The presence of trialkylphosphines in the growth solution leads to the formation of spherical nanocrystals with mixed fcc-hcp structure, where as trioctylphosphine oxide leads to a newly discovered structure of [epsilon]-cobalt. The final size of the crystals is controlled by the precursor-to-ligand ratio, and low polydispersity is achieved by the separation of nucleation and growth stages. Size-selective precipitation is used to further reduce the size variation of the samples. As a result, cobalt nanocrystals in the size range of 4-12 nm in diameter can be routinely produced with size distributions as small as 6%. The study of magnetic properties reveals the superparamagnetic nature of cobalt nanocrystals of this size range at room temperature. At low temperatures, a good qualitative agreement with the theoretical (Stoner-Wohlfarth) model is found,
(cont.) although quantitative results are strongly influenced by the presence of an oxide shell around each nanocrystal. The presence of two surfactants (trialkylphosphines and sodium carboxylates) during the growth leads to the formation of a significant number of triangular and rod-shaped nanocrystals. Unlike disordered spherical particles, these nanocrystals have pure fcc structure without visible defects. The length of the rods is roughly controlled by the concentration of carboxylates in the growth solution and can be changed within a 40-400 nm range. Unlike spherical crystals of comparable volume, the rods are ferromagnetic even at room temperature due to an added effect of shape anisotropy. A growth mechanism for the formation of nanorods with cubic structure is also proposed.
by Dmitry P. Dinega.
Ph.D.
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IMRAN, MUHAMMAD. « Synthesis and Post-synthesis Transformations of Colloidal Semiconductor Nanocrystals ». Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/945513.

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The present PhD thesis focuses on two main classes of semiconductor colloidal nanocrystals, i.e. lead halide perovskite and copper chalcogenides. The former class of semiconductor NCs are promising materials for many high performance optoelectronics applications, as they exhibit a tunable band gap in the range of 1.4 to 2.9 eV and an efficient photoluminescence characterized by narrow emission linewidths and have been explored the most in the last years. Following the standard hot injection based synthesis and selecting a combination of short chain acid (octanoic acid or hexanoic acid) together with alkyl amines (octylamine and oleylamine) we prepared strongly fluorescent CsPbBr3 perovskite nanowires with tuneable width, in the range from 20 nm (exhibiting no quantum confinement, hence emitting in the green) to 3 nm (in the strong quantum-confinement regime, emitting in the blue) for the first time. However the main limitation of the colloidal synthesis protocols that was followed in aforementioned case including the ligand assisted reprecipitation routes which is the second most frequently used method for preparation of LHPs, is that they employ PbX2 (X= Cl, Br, or I) salts as both lead and halide precursors which consequently limit the precise tunability of the amount of reaction species such as metals or halides precursors and are not applicable to entire family of APbX3 (A=FA, MA and Cs; X=Cl, Br, I). To overcome this issue we developed benzoyl halide based colloidal synthesis route i.e broadly applicable to the entire family of LHP NCs and not only ensures the independent tunability of reaction precursors but also maintain the overall integrity of the NCs such as phase purity and high PLQY. Despite the significant advances in synthesis procedures, the control over size monodispersity, shape and phase purity remains another long standing challenge. This is in fact due to the tendency of primary alkyl amine in the form of alkylammonium ions that could compete with Cs+ ions and leads to the anisotropic growth such as NPLs or their use in excess permotes the Pb-depleted Cs4PbX6 phases. We develop here a strategy to achieve size, shape and phase pure CsPbBr3 nanocubes by substituting primary alkyl amines with secondary alkyl amines. We attributed this excellent control over the shape and phase purity to the inability of secondary amines to find the right steric conditions at the surface of the nanocrystals which consequently limits the formation of low dimensional structures. The shape purity and narrow size distribution leads to their ease of self-assembly in superlattices reaching up to 50 microns in lateral dimensions, which are the largest dimensions reported to date for superlattices of LHP NCs. The second class of materials studied here, i.e. copper chalcogenides, are mainly attractive due to their tunable composition via post synthesis chemical transformations, plasmonic properties, low toxicity and environmental friendliness. Taking the advantage of colloidal synthesis and using Cu2S as a template we develop a strategy to obtain novel AuCuS-Cu2S heterostructure through cation exchange, which cannot be realized through conventional synthesis approaches. We further investigated the stability of Cu2S NCs with different dimensionalities and their thermal evolution subsequent to the metal decoration. Interestingly the presence of additional metallic NCs, such as Au and Pt not only improves their thermal stability but also leads to the formation of bi-metallic alloys semiconductor heterostructure.
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Murphy, James Edward. « Semiconductor nanocrystals and nanocrystal arrays : Synthesis, characterization, and time-resolved terahertz spectroscopy photoconductivity measurements ». Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3207726.

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Schmidt, Jan-Uwe. « Synthesis of silicon nanocrystal memories by sputter deposition ». Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28765.

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Aim of this work was, to investigate the preparation of Si NC memories by sputter deposition. The milestones are as follows: - Review of relevant literature. - Development of processes for an ultrathin tunnel-oxide and high quality sputtered SiO2 for use as control-oxide. - Evaluation of methods for the preparation of an oxygen-deficient silicon oxide inter-layer (the precursor of the Si NC layer). - Characterization of deposited films. - Establishment of techniques capable of probing the phase separation of SiOx and the formation of Si NC. - Establishment of annealing conditions compatible with the requirements of current CMOS technology based on experimental results and simulations of Si NC formation. - Preparation Si NC memory capacitors using the developed processes. - Characterization of these devices by suitable techniques. Demonstration of their memory functionality.
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Schmidt, Jan-Uwe. « Synthesis of silicon nanocrystal memories by sputter deposition ». Forschungszentrum Rossendorf, 2005. https://hzdr.qucosa.de/id/qucosa%3A21703.

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Aim of this work was, to investigate the preparation of Si NC memories by sputter deposition. The milestones are as follows: - Review of relevant literature. - Development of processes for an ultrathin tunnel-oxide and high quality sputtered SiO2 for use as control-oxide. - Evaluation of methods for the preparation of an oxygen-deficient silicon oxide inter-layer (the precursor of the Si NC layer). - Characterization of deposited films. - Establishment of techniques capable of probing the phase separation of SiOx and the formation of Si NC. - Establishment of annealing conditions compatible with the requirements of current CMOS technology based on experimental results and simulations of Si NC formation. - Preparation Si NC memory capacitors using the developed processes. - Characterization of these devices by suitable techniques. Demonstration of their memory functionality.
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Yen, Brian K. H. « Microfluidic reactors for the synthesis of nanocrystals ». Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38619.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2007.
Vita.
Includes bibliographical references.
Several microfluidic reactors were designed and applied to the synthesis of colloidal semiconductor nanocrystals (NCs). Initially, a simple single-phase capillary reactor was used for the synthesis of CdSe NCs. Precursors were delivered into a section of the capillary maintained at high temperature where they decomposed and reacted to form NCs. Monodisperse, bright CdSe NC samples were prepared over a significant range of average sizes. The excellent stability and reproducibility of the continuous flow system was also demonstrated. However, a limitation of the single-phase flow approach was that slow mixing and large residence time distributions can be detrimental to the overall quality (eg. size distribution) of the NC samples produced. These limitations were overcome by designing and fabricating in silicon a gas-liquid segmented flow microreactor. In contrast to the single-phase flow, recirculation within the liquid segments provides a mechanism to exchange fluid elements located near the channel walls with those in the center. This recirculation has the dual of effect of reducing axial dispersion and greatly improving the mixing efficiency - factors which have a strong influence on the ultimate size and size distribution of NCs produced.
(cont.) Compared to single-phase operation, preparation of CdSe NCs in segmented flow resulted in superior reactor throughput and narrower size distributions. Finally, the segmented flow method was extended in a microreactor designed for the synthesis of more complicated NC architectures. The design incorporated multiple inlet channels, which allowed for continuous injection of multiple precursor streams. This reactor was used to synthesize several core/shell NC structures - CdSe/ZnS, CdSe/ZnSe, and CdSe/CdxZnl-xSe.
by Brian K.H. Yen.
Ph.D.
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Khon, Elena. « Synthesis and Applications of Heterostructured Semiconductor Nanocrystals ». Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1374512926.

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Jansons, Adam. « Living Nanocrystals : Synthesis of Precisely Defined Metal Oxide Nanocrystals Through a Continuous Growth Process ». Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23172.

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Colloidal nanocrystals offer new and improved performance in applications as well as less environmental impact when compared to traditional device fabrication methods. The important properties that enable improved applications are a direct result of nanocrystal structure. While there have been many great advances in the production of colloidal nanocrystals over the past three decades, precise, atomic-level control of the size, composition, and structure of the inorganic core remains challenging. Rather than dictate these material aspects through traditional synthetic routes, this dissertation details the development and exploitation of a colloidal nanocrystal synthetic method inspired by polymerization reactions. Living polymerization reactions offer precise control of polymer size and structure and have tremendously advanced polymer science, allowing the intuitive production of polymers and block co-polymers of well-defined molecular weights. Similarly, living nanocrystal synthetic methods allow an enhanced level of structural control, granting the synthesis of binary, doped, and core/shell nanocrystals of well-defined size, composition, and structure. This improved control in turn grants enhanced nanocrystal property performance and deepens our understanding of structure/property relationships. This dissertation defines living nanocrystal growth and demonstrates the potential of the living methods in the colloidal production of oxide nanocrystals. After a brief introduction, living growth is defined and discussed in the context of synthetic prerequisites, attributes, and outcomes. Living growth is also compared to more traditional colloidal nanocrystal synthetic methods. The following chapters then demonstrate the precise control living approaches offer in three separate studies; the first highlights sub-nanometer control of nanocrystal size from 2-22+ nm in diameter. Next the improvement in nanocrystal composition is illustrated using several transition metal dopants into an oxide nanocrystal matrix at near thermodynamically allowed compositions. Additionally, precise radial dopant placement is demonstrated, which has striking implications for material properties. The radial position of tin in tin-doped indium oxide nanocrystals and the resulting differences on the localized surface plasmon resonance are discussed. Finally, future opportunities are reviewed. This dissertation includes previously published co-authored material.
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SARTORI, EMANUELA. « EMISSIVE NANOCRYSTALS FOR OPTOELECTRONIC APPLICATIONS ». Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1074636.

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Metal halide perovskites (particularly doped perovskites and lead free double perovskites) are starting to generate great interest in the scientific community due to their unique electronic and structural properties, such as high photoluminescent quantum yields (PLQY, up to 90%), chemical diversity in terms of elements employed and tunable optical properties. Consequently, their application in optoelectronic devices gained attention. During these three years, I intensively worked on the synthesis and characterization of inorganic perovskites nanocrystals, starting from lead halide perovskites (LHPs) in 3D and 0D structure and then moving to the double perovskites (DPs). Generally, the aim of these studies is to replace Pb with less toxic elements, producing materials more stable to atmosphere conditions and with good optical properties. Thus, synthesis and optimization are the key words of this part of the work. Pb has been replaced with a monovalent (Ag, Na) and a trivalent (In, Bi), or a bivalent (Cu, Mn) and a trivalent (Sb) metal cation, leading to DPs (e.g. Cs2AgInCl6) and layered perovskites (e.g. Cs4CuSb2Cl12), respectively. However, perovskites are not the only promising candidate for optoelectronic devices, in particular considering the increasing interest in studying NIR emitting materials. In this field, my work on silicates takes place. In fact, Cu - based silicates (e.g. CaCuSi4O10) possess a high emission in NIR region (900–1000 nm). Moreover, their high Stokes shift, which limits re-absorbance phenomenon, and the high stability to ambient condition and sun irradiation, suggest their use in solar absorbing devices. During my PhD I performed deep structural investigation using synchrotron radiation after an optimization of the material synthesis; then, I worked on their exfoliation leading to the formation of very homogeneous nanosheets.
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Livres sur le sujet "Nanocrystals Synthesis"

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Pavesi, Lorenzo, et Rasit Turan. Silicon nanocrystals : Fundamentals, synthesis and applications. Weinheim : Wiley-VCH, 2010.

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Li, Ji-Guang. TiO2 nanocrystals : Synthesis and enhanced functionality. Hauppauge, N.Y : Nova Science Publishers, 2010.

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Hendricks, Mark Patrick. The Synthesis of Colloidal Metal Sulfide Nanocrystals. [New York, N.Y.?] : [publisher not identified], 2015.

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Iwasaki, Tomohiro, et Tomohiro Iwasaki. Organic solvent-free synthesis of magnetic nanocrystals with controlled particle sizes. Hauppauge, N.Y : Nova Science Publishers, 2010.

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Iwasaki, Tomohiro. Organic solvent-free synthesis of magnetic nanocrystals with controlled particle sizes. Hauppauge, N.Y : Nova Science Publishers, 2010.

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McMurtry, Brandon Makana. Synthesis and Formation Mechanism of Metal Phosphide and Chalcogenide Nanocrystals. [New York, N.Y.?] : [publisher not identified], 2021.

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7

I, Klimov Victor, dir. Semiconductor and metal nanocrystals : Synthesis and electronic and optical properties. New York : Marcel Dekker, Inc., 2004.

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8

Glezer, A. M. Nanokristally, zakalennye iz rasplava. Moskva : Fizmatlit, 2012.

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J, Glembocki O., Materials Research Society et Materials Research Society Meeting, dir. Nanoparticles and nanowire building blocks--synthesis, processing, characterization and theory : Symposium held April 13-16, 2004, San Francisco, California, U.S.A. Warrendale, Pa : Materials Research Society, 2004.

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L, Rogach Andrey, dir. Semiconductor nanocrystal quantum dots : Synthesis, assembly, spectroscopy, and applications. Wien : Springer, 2008.

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Chapitres de livres sur le sujet "Nanocrystals Synthesis"

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Mangolini, Lorenzo, et Uwe Kortshagen. « Nonthermal Plasma Synthesis of Silicon Nanocrystals ». Dans Silicon Nanocrystals, 309–48. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527629954.ch13.

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Elliman, Robert. « The Synthesis of Silicon Nanocrystals by Ion Implantation ». Dans Silicon Nanocrystals, 223–45. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527629954.ch9.

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Huang, He. « Synthesis of Perovskite Nanocrystals ». Dans Perovskite Quantum Dots, 1–18. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6637-0_1.

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Nakamura, Hiroyuki, Masato Uehara et Hideaki Maeda. « Nanocrystals Synthesis by Microreactors ». Dans Advances in Science and Technology, 652–59. Stafa : Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.652.

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Cozzoli, P. Davide, Concetta Nobile, Riccardo Scarfiello, Angela Fiore et Luigi Carbone. « Magnetic Multicomponent Heterostructured Nanocrystals ». Dans Magnetic Nanomaterials - Fundamentals, Synthesis and Applications, 217–90. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527803255.ch8.

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Ehrenberg, Samantha K., Katharine I. Hunter et Uwe R. Kortshagen. « Silicon nanocrystals from plasma synthesis ». Dans Silicon Nanomaterials Sourcebook, 271–92. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2017] | Series : Series in materials science and engineering : CRC Press, 2017. http://dx.doi.org/10.4324/9781315153544-14.

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Lee, Soo Jin, Woon Jo Cho, Chong Shik Chin et Il Ki Han. « Sonochemical Synthesis of Silicon Nanocrystals ». Dans Key Engineering Materials, 995–99. Stafa : Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-958-x.995.

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Liu, Yang. « Synthesis and Characterization of Nanocrystals and Nanoparticles ». Dans Semiconductor Nanocrystals and Metal Nanoparticles, 1–38. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742 : CRC Press, 2016. http://dx.doi.org/10.1201/9781315374628-2.

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Thomas, P. John, Oliver L. Armstrong et Sean N. Baxter. « Advances in Synthesis of Metal Nanocrystals ». Dans Metal Nanoparticles and Clusters, 31–54. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68053-8_2.

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Korotcenkov, Ghenadii, et Igor A. Pronin. « Synthesis of II-VI Semiconductor Nanocrystals ». Dans Handbook of II-VI Semiconductor-Based Sensors and Radiation Detectors, 277–323. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-19531-0_11.

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Actes de conférences sur le sujet "Nanocrystals Synthesis"

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RAZUMOV, V., et S. BRICHKIN. « MICELLAR SYNTHESIS OF NANOCRYSTALS ». Dans Proceedings of the International Conference on Nanomeeting 2007. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812770950_0064.

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Bastus, Neus, Jordi Piella, Carmen Hervés, Elizaveta Demakova, Jana Oliveras, Oscar Moriones et Victor Puntes. « Colloidal Synthesis of Complex Multicomponent Inorganic Nanocrystals ». Dans Internet NanoGe Conference on Nanocrystals. València : Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.incnc.2021.049.

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Calcabrini, Mariano, Jordi Lorca, Jonathan De Roo et Maria Ibáñez. « Unexpected ligand transformation in metal oxide nanocrystals synthesis ». Dans Internet NanoGe Conference on Nanocrystals. València : Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.incnc.2021.036.

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Shcheglov, K. V., C. M. Yang et H. A. Atwater. « Photoluminescence and Electroluminescence of Ge-Implanted Si/SiO2/Si Structures ». Dans Microphysics of Surfaces : Nanoscale Processing. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/msnp.1995.msab3.

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Although it was observation of efficient photoluminescence [PL] from porous silicon that prompted numerous investigations into the optoelectronic properties of group IV semiconductor nanocrystals, there is interest in other related materials which are more robust in various chemical and thermal ambients and which can be easily incorporated into standard silicon VLSI processing. A promising approach that meets the above requisites is synthesis of semiconductor nanocrystals in an SiO2 matrix accomplished by various techniques. In this letter we report on the fabrication of a Ge nanocrystal-based electroluminescent device using ion implantation and precipitation.
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Blanton, Sean A., Ahmad Dehestani, Peter C. Lin et Philippe Guyot-Sionnest. « Single Nanocrystal Spectroscopy by Two Photon Excitation ». Dans Microphysics of Surfaces : Nanoscale Processing. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/msnp.1995.msaa4.

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Current methods of semiconductor nanocrystal synthesis produce samples which are nearly monodisperse in size. The remaining polydispersity in size, along with possible variations in surface configuration, still introduce an inhomogeneous broadening to most spectroscopic studies. In an effort to eliminate this broadening, we perform spectroscopy on single nanocrystals.
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Akylbekova, A., A. Dauletbekova, Z. Baymukhanov, A. Kozlovsky et A. Usseinov. « Template synthesis of ZnSe2O5 nanocrystals ». Dans PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019) : Proceedings of the VI International Young Researchers’ Conference. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5134152.

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Karpovich, Natalia F., Ilya V. Korolkov, Konstantin S. Makarevich, Maxim A. Pugachevsky, Dmitry S. Shtarev, Alexander V. Syuy et Victor V. Atuchin. « Hydrothermal synthesis of anatase nanocrystals ». Dans 2012 IEEE 13th International Conference and Seminar of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM 2012). IEEE, 2012. http://dx.doi.org/10.1109/edm.2012.6310181.

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Weller, Horst Weller. « Synthesis, Properties and Applications of Nanocrystals in Materials and Life Sciences ». Dans Internet NanoGe Conference on Nanocrystals. València : Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.incnc.2021.060.

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Hill, Eric. « Synthesis of Semiconductors Confined in Nanoscopic Colloidal Templates toward Heterostructured Nanomaterials ». Dans Internet NanoGe Conference on Nanocrystals. València : Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.incnc.2021.008.

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Oliveras, Jana, Neus Bastús et Víctor Puntes. « SYNTHESIS AND APPLICATION STUDY OF Fe3O4/GRAPHENE HYBRID FOR WATER REMEDIATION ». Dans Internet NanoGe Conference on Nanocrystals. València : Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.incnc.2021.022.

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Rapports d'organisations sur le sujet "Nanocrystals Synthesis"

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Dinh, L. N., T. Trelenberg, B. Torralva, B. C. Stuart et M. Balooch. Femtosecond Laser Synthesis of Multi-Element Nanocrystals. Office of Scientific and Technical Information (OSTI), janvier 2003. http://dx.doi.org/10.2172/15006361.

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Chan, Emory Ming-Yue. Synthesis and Manipulation of Semiconductor Nanocrystals inMicrofluidic Reactors. Office of Scientific and Technical Information (OSTI), janvier 2006. http://dx.doi.org/10.2172/926707.

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White, C. W., J. D. Budai et A. L. Meldrum. Ion beam synthesis of CdS, ZnS, and PbS compound semiconductor nanocrystals. Office of Scientific and Technical Information (OSTI), décembre 1997. http://dx.doi.org/10.2172/564245.

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Budai, J. D., C. W. White, S. P. Withrow, R. A. Zuhr et J. G. Zhu. Synthesis, optical properties, and microstructure of semiconductor nanocrystals formed by ion implantation. Office of Scientific and Technical Information (OSTI), décembre 1996. http://dx.doi.org/10.2172/425296.

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Perepezko, J. H. High Temperature AL-Nanocrystal Alloy Synthesis. Fort Belvoir, VA : Defense Technical Information Center, janvier 2001. http://dx.doi.org/10.21236/ada391741.

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Liu, Haitao. Chemistry of the Colloidal Group II-VI Nanocrystal Synthesis. Office of Scientific and Technical Information (OSTI), mai 2007. http://dx.doi.org/10.2172/918668.

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