Download or read book Synthetic Control of Semiconductor Nanocrystal Properties Through Precursor Chemistry written by Soren F. Sandeno and published by . This book was released on 2021 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanocrystals, more commonly known as quantum dots, have recently become a popular discipline of research due to their unique size-dependent photoluminescent properties leading towards a diverse variety of applications in solar cell technologies, highly efficient displays, biomedical imaging, and tumor therapy. These materials require a high degree of synthetic control due to the number of variables that can affect their formation. One approach to influencing the synthesis of quantum dots uses the structure of precursors to fine-tune their reactivity and, by doing so, control the kinetics of the reaction. This strategy can be applied to controlling many physical properties of the nanocrystals including size, shape, and crystalline phase. Presented here are two attempts at using precursor structure to influence the properties of quantum dots. Firstly, the possibility of using thiourea structure to control the formation of copper sulfide phases was investigated. Due to the complex valencies of both elements in copper sulfide phases, achieving phase selectivity and control has been a persistent challenge in nanocrystal synthesis. Influencing reaction kinetics through tuning precursor reactivity presents itself as a powerful possible solution to synthetically controlling the phases of copper sulfide. Secondly, zinc sulfide single-source precursors were designed and tested to gauge if their structure can be used to influence crystal size. It was shown that the thermal decomposition of substituted thiourea-based single-source precursors resulted in zinc sulfide nanocrystals with measurable reaction kinetics. Both the phase control of copper sulfide and the design of zinc sulfide single-source precursors generate promising potential in synthetic control through precursor chemistry.

Download or read book Colloidal Semiconductor Nanocrystals Synthesis Properties and Applications written by Vladimir Lesnyak and published by Frontiers Media SA. This book was released on 2020-01-06 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semiconductor and Metal Nanocrystals written by Victor I. Klimov and published by CRC Press. This book was released on 2003-11-07 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast technological potential of nanocrystalline materials, as well as current intense interest in the physics and chemistry of nanoscale phenomena, has led to explosive growth in research on semiconductor nanocrystals, also known as nanocrystal quantum dots, and metal nanoparticles. Semiconductor and Metal Nanocrystals addresses current topics impacting the field including synthesis and assembly of nanocrystals, theory and spectroscopy of interband and intraband optical transitions, single-nanocrystal optical and tunneling spectroscopies, electrical transport in nanocrystal assemblies, and physical and engineering aspects of nanocrystal-based devices. Written by experts who have contributed pioneering research, this reference comprises key advances in the field of semiconductor nanocrystal quantum dots and metal nanoparticles over the past several years. Focusing specifically on nanocrystals generated through chemical techniques, Semiconductor and Metal Nanocrystals Merges investigative frontiers in physics, chemistry, and engineering Documents advances in nanocrystal synthesis and assembly Explores the theory of electronic excitations in nanoscale particles Presents comprehensive information on optical spectroscopy of interband and intraband optical transitions Reviews data on single-nanocrystal optical and tunneling spectroscopies Weighs controversies related to carrier relaxation dynamics in ultrasmall nanoparticles Discusses charge carrier transport in nanocrystal assemblies Provides examples of lasing and photovoltaic nanocrystal-based devices Semiconductor and Metal Nanocrystals is a must read for scientists, engineers, and upper-level undergraduate and graduate students interested in the physics and chemistry of nanoscale semiconductor and metal particles, as well as general nanoscale science.

Download or read book The Colloidal Chemistry Synthesis and Electron Microscopy Characterization of Shape controlled Metal and Semiconductor Nanocrystals written by Adam Biacchi and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solution methods of materials synthesis have found application in a variety of fields due to the diversity of products accessible, facility of process scalability, and the ease of tuning their properties through prudent selection of reaction conditions. Control of experimental variables during the formation of colloidally stable nanoscale solids within a liquid matrix allows for tailoring of the particles' characteristics, including shape, size, composition, and surface chemistry. In this dissertation, I will discuss how the manipulation of reaction chemistries can be used to synthesize shape-controlled metal and semiconductor colloidal nanocrystals. Further, I will elaborate on the mechanisms by which these particles form from molecular precursors and describe how their properties can differ from their bulk analogues through extensive characterization, especially using transmission electron microscopy. These studies contribute to the continued development of chemical routes to nanocrystals and their application as functional materials.First, I will review recent advances in the synthesis and characterization of shape-controlled nanocrystals, as well as highlight their promising applicability in a number of emerging technologies. These principles will then be leveraged to the specific case of catalytically-active rhodium nanocrystals, which can be synthesized with morphological and dimensional control using a polyol solution-mediated strategy. I describe an innovative shape-controlled synthesis to monodisperse colloidal rhodium icosahedra, cubes, triangular plates, and octahedra using this route. Additionally, new insights into the important role of the polyol reducing solvent on the synthesis of these nanocrystals are revealed, and how these might be exploited to engender superior reaction control and novel products.Next, I will describe how a crystallization mechanism was established for the synthesis of numerous morphologies of noble metal nanocrystals. I present a thorough analysis of the synthesis of shape-controlled rhodium nanocrystals, using extensive transmission electron microscopy characterization, and relate these findings to one of the primary synthetic levers available in the polyol synthesis: the anionic ligands present. Further, I show that the crystallization process proceeds by a nonclassical mechanism in which cluster particles serve as a stable intermediate between molecular precursors and the final product. I then apply these principles to the shape-controlled synthesis of other noble metal nanocrystals before expounding a generalized formation mechanism in the polyol synthesis of colloidal metal nanocrystals. Finally, I will highlight my efforts in the designed synthesis and characterization of colloidal tin(II) sulfide (SnS) semiconducting "quantum dot" nanocrystals. I describe a route for the solution synthesis of monodisperse colloidal SnS nanosheets, nanocubes, and nanospherical polyhedra in high yield. Further, detailed crystallographic characterization of these nanocrystals using transmission electron microscopy indicates that their atomic structure possesses a previously-unreported nanoscale deviation from the bulk phase. Additionally, I show that their electronic and photocatalytic properties of these quantum dots are both shape-dependent and distinct from bulk SnS.

Download or read book Semiconductor Nanocrystals written by Alexander L. Efros and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: A physics book that covers the optical properties of quantum-confined semiconductor nanostructures from both the theoretical and experimental points of view together with technological applications. Topics to be reviewed include quantum confinement effects in semiconductors, optical adsorption and emission properties of group IV, III-V, II-VI semiconductors, deep-etched and self assembled quantum dots, nanoclusters, and laser applications in optoelectronics.

Download or read book The Role of Precursor Conversion in the Nucleation and Growth of Zinc Pnictide Based Semiconductor Quantum Dots written by Benjamin Andrew Glassy and published by . This book was released on 2017 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the synthesis of colloidal semiconductor nanocrystals has boomed over the last thirty years. This is, in part, due to the tunable optoelectronic properties of these colloids, which stems from the quantum confinement effect where the electronic structure evolves as a function of crystal volume. The other promising attribute of these colloidal semiconductors is their ability to be prepared and processed in solution, allowing device fabrication under ambient conditions and enabling deposition onto a wide variety of substrates. Most research to date has focused on synthesizing materials in the II-VI, IV-VI, and III-V families. The II-V class of semiconductors, including Zn3P2, Cd3P2, Zn3As2, and Cd3As2, have not been given much attention from the colloidal nanocrystal community despite their enormous promise for light harvesting applications. These four semiconductors have bulk band gaps ranging between 1.5 eV (Zn3P2) and 0 eV (Cd3As2). They are also completely soluble within each other, meaning an alloy of any composition is achievable and thus the bulk band gap is completely tunable over this 1.5 eV range. As a result, these semiconductors may offer advantages for a wide variety of light absorbing applications including the high earth abundance of zinc and phosphorus for cost effective light absorbing layers in solar cells, or less toxic alternatives to cadmium mercury telluride alloys for IR light detection applications. This thesis dissertation describes our efforts to elucidate and exploit novel precursor chemistry for the synthesis of Zn3P2, larger Zn3P2, and alloys of composition (CdyZn1-y)3As2. Chapter 1 serves as an introduction into the synthesis of II-V colloidal nanocrystals as well as describing typical synthetic challenges and structural differences among the products that result from the various methodologies. Chapter 2 describes a novel synthesis of 3 nm Zn3P2 nanocrystals that utilizes an activated intermediate, [Zn5(O2CR)6(Et)4], to promote reactivity with P(SiMe3)3. A novel P-Zn containing species then forms in a rate-limiting step prior to the nucleation and growth of the 3 nm Zn3P2 quantum dots. Chapter 3 will describe efforts to grow larger Zn3P2 particles from 3 nm seeds, which led to the identification of a different P-Zn containing intermediate with lower relative reactivity that afforded access to either bulk zinc phosphide or large 5 nm particles depending on the supporting ligands present. This chapter will also discuss the structural evolution that occurs as the particles grow from 3 to 5 nm in diameter. Chapter 4 discusses an extension of these synthetic methods for the synthesis of (CdyZn1-y)3As2 alloys. Lastly, Appendix B serves as a reference towards the synthesis of a family of arylsilylphosphines with varying electron withdrawing or electron donating groups in the para position of the aryl rings to serve as a library of potential phosphide precursors where the electronics of the P-Si bonds could be toggled.

Download or read book Semiconductor Nanocrystals and Silicate Nanoparticles written by Xiaogang Peng and published by Springer Science & Business Media. This book was released on 2005-11-03 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Niet afgebeeld. 1896 edition. Uittreksel: ...van kai met een verbaal woord, bij de verleden deelwoorden met raa, den passieven vorm met ndai en het participium passivum praesens. behandeld in 62, de eenigste vormen, waarin zich in het Bim. eene bepaalde passieve constructie ontwikkeld heeft. Dit is zeer begrijpelijk, bij de actieve constructie toch is het alleen maar eene zaak van vorm of men zegt: ta-bonto-ku kai malanta of ta-bonto-kai-ku malanta (vgl. de vorige ), bij de passieve constructie daarentegen gaat daaraan tevens verschil in beteekenis gepaard. Beteekenen toch, bijv. de van het eenvoudige diki (binden) afgeleide vormen raa-diki en ndai diki, dat, wat gebonden is en dat, wat te binden is (dat, wat gebonden wordt), zoo hebben de van het uit diki en kai samengestelde werkwoord diki afgeleide vormen raa-diki kai en ndai diki kai eene beteekeuis, die wij moeten omschrijven mei, dat, waarmede is gebonden," en dat, waarmede te binden is (gebonden wordt)." Heeft het werkwoord oorspronkelijk intransitieve beteekeuis, dan wordt het door samenstelling met kai transitief, zoodat er dus ook bovengenoemde passieve vormen van afgeleid kunnen worden, bijv. van mat (komen) raa-mai kai en ndai mai kai, de beteekenis van welke vormen wij moeten omschrijven met dat, waarmede (men) gekomen is" en dat, waarmede men komen moet (dat, waarmede men komt)." Wat de beteekenis dezer vormen betreft, is nog op te merken, dat zij behalve het instrument, ook nog de oorzaak kunnen aanduiden, in welk geval wij ze op bovengenoemde wijze kunnen omschrijven door in plaats van waarmede," waardoor" of waarom" te bezigen. De samenhang dezer beteekenissen is bekend genoeg (zie ook Aanm. U. na 140), alleen zij nog...

Download or read book Role of Surface Ligand Chemistry on Shape Evolution and Optoelecronic Properties of Direct Band Gap Semiconductors written by Meghan Teunis McLeod and published by . This book was released on 2017 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expansion of the applications of direct band gap semiconductor nanocrystals (NCs) has been a result of the control colloidal synthetic methods offer on the optoelectronic properties. These properties are readily controlled by the surface chemistry and even a small change in the surface passivating ligand can show profound effects. Furthermore, the choice of surface passivating ligand also impacts the NC shape evolution, which in turn influence the surface area, quantum yield, and charge transport properties that are critical to optimize device fabrication. In this dissertation, the unique aspects of surface chemistry that control both NC shape evolution and optoelectronic properties are investigated. We began by investigating how surface chemistry controls the shape evolution of methyl ammonium lead bromide (CH3NH3PbBr3) perovskite NCs. In addition to the surface passivating ligand, the reaction temperature and solvent system were also examined. Through a series of control experiments, the critical parameter for the formation of quantum wires (QWs) was found to be the presence of a long chain acid, while the quantum platelets (QPLs) required a long chain amine and chlorinated solvent, and quantum cube (QC) formation was kinetically driven. The higher ordered stacking of the QPLs and bundling of the QWs was also found to be controlled by surface ligand chemistry. Next we further examined how surface chemistry impacts shape evolution, but in the system of metal chalcogenide NCs. We developed a versatile, low temperature, and gram scale synthesis of QWs, QPLs, and quantum rods (QRs) using both cadmium and zinc as metal precursors and sulfur and selenium as chalcogenide precursors. Through systematic investigation of both the surface chemistry and reaction progression, the growth and formation mechanism was also determined. The 1D QW growth required a long chain amine while the QPLs required the presence of both a long and short chain amine to drive 2D growth. Finally, the QRs would found to be a kinetically-controlled process. Ultrasmall semiconductor NCs are known to possess high surface to volume ratios and therefore even a minute change in surface chemistry will have a significant impact on the optoelectronic properties. Our investigation focused on (CdSe)34 NCs, and how exchanging native amine ligands with various chalcogenol based ligands influences these properties. These NCs lie in the strong confinement regime and therefore have a higher probability of undergoing exciton delocalization, resulting in red shifts of the first excitonic peak and reduction of the optical band gap. Additionally, we examined different characteristics of the ligand (level of conjugation, electron withdrawing or donating nature of para-substitution, binding mode and head group) to examine how these parameters impact exciton delocalization. We observed the highest shift in the optical band gap (of 650 meV) after exchanging the native amine ligands with pyrene dithiocarbamate. Through this investigation it was determined that ligand characteristics (specifically conjugation and binding mode) have significant influence in the proposed hole delocalization. Finally, we continued the investigation of how surface chemistry controls optoelectronic properties of ultrasmall NCs, but expand our work to those of methyl ammonium lead halide. We developed a low temperature and colloidal synthesis of white-light emitting NCs with a diameter of 1.5 nm. Through precise manipulation of the surface halide ions, it was possible to tailor the emission to match that of nearly pure white light.

Download or read book Metal Nanocrystals written by Kallum M. Koczkur and published by American Chemical Society. This book was released on 2020-07-31 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our society depends heavily on metals. They are ubiquitous construction materials, critical interconnects in integrated circuits, common coinage materials, and more. Excitingly, new uses for metals are emerging with the advent of nanoscience, as metal crystals with nanoscale dimensions can display new and tunable properties. The optical and photothermal properties of metal nanocrystals have led to cancer diagnosis and treatment platforms now in clinical trials, while, at the same time, the ability to tune the surface features of metal nanocrystals is giving rise to designer catalysts that enable more sustainable use of precious resources. These are just two examples of how metal nanocrystals are addressing important social needs.

Download or read book Semiconductor Nanocrystal Quantum Dots written by Andrey Rogach and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to specifically focus on semiconductor nanocrystals, and address their synthesis and assembly, optical properties and spectroscopy, and potential areas of nanocrystal-based devices. The enormous potential of nanoscience to impact on industrial output is now clear. Over the next two decades, much of the science will transfer into new products and processes. One emerging area where this challenge will be very successfully met is the field of semiconductor nanocrystals. Also known as colloidal quantum dots, their unique properties have attracted much attention in the last twenty years.

Download or read book Metal Oxide Nanoparticles in Organic Solvents written by Markus Niederberger and published by Springer Science & Business Media. This book was released on 2009-09-17 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxide Nanoparticles in Organic Solvents discusses recent advances in the chemistry involved for the controlled synthesis and assembly of metal oxide nanoparticles, the characterizations required by such nanoobjects, and their size and shape depending properties. In the last few years, a valuable alternative to the well-known aqueous sol-gel processes was developed in the form of nonaqueous solution routes. Metal Oxide Nanoparticles in Organic Solvents reviews and compares surfactant- and solvent-controlled routes, as well as providing an overview of techniques for the characterization of metal oxide nanoparticles, crystallization pathways, the physical properties of metal oxide nanoparticles, their applications in diverse fields of technology, and their assembly into larger nano- and mesostructures. Researchers and postgraduates in the fields of nanomaterials and sol-gel chemistry will appreciate this book’s informative approach to chemical formation mechanisms in relation to metal oxides.

Download or read book Chemistry of Semiconductors written by Sergio Pizzini and published by Royal Society of Chemistry. This book was released on 2023-11-24 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon, germanium, and compound semiconductors, among which silicon carbide, gallium arsenide and gallium nitride are the most representative examples, play a withstanding role in the world economy, since they were and still are the keys for the advancement of modern microelectronics and optoelectronics, with a wealth of sister technologies relevant for renewable energy solutions and advanced spectroscopy applications. This textbook will cover the synthesis, spectroscopic characterisation and optimisation of semiconductor materials, accounting for the most recent developments in the field of nanomaterials. It will be of great interest for scholars and instructors to have the chance to look at semiconductor science with a basic chemical approach. Homopolar semiconductors (silicon and germanium) are examined first, considering the role of these materials in modern microelectronics and in photovoltaics. Compound semiconductors (for example, carbides, arsenides, tellurides, nitrides) are also discussed in detail, considering that the chemistry of their preparation is even more critical and their role in photonic applications is strategic. Authored by a leading expert in the field, this easily accessible text is appropriate for advanced undergraduates and postgraduates studying materials science and technology.

Download or read book Quantum Confined Semiconductor Nanocrystals written by Wesley Chiang and published by American Chemical Society. This book was released on 2023-09-26 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, the fascinating story of colloidal quantum dots has no series finale yet. Instead, there continue to be advancements in our understanding of the fundamental properties of these nanocrystals, each of these advancements catalyzing a spin-off into a new journey toward potential applications. These remarkable advancements include improving the synthesis techniques, characterizing nanocrystals at the single-particle level, and tailoring their properties for specific applications. The quantum-confined colloidal semiconductor nanocrystals field has witnessed a remarkable convergence of nanoscience, materials chemistry, and spectroscopy, resulting in unprecedented control over their properties. With ongoing research efforts, the potential of semiconductor nanocrystals continues to unfold. Scientists are exploring new materials, developing scalable synthesis methods, and pushing the boundaries of their applications in fields such as quantum computing, energy storage, and biological sensing. The authors take the reader into quantum confinement and quantum dots. While the contents of this primer are rather expansive, they merely scratch the surface of the complex voyage that quantum dot sciences have undergone. The authors have identified vital terminology, valuable concepts, techniques, and applications.

Download or read book Comprehensive Nanoscience and Technology written by and published by Academic Press. This book was released on 2010-10-29 with total page 2785 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Introduction: Nanotechnology and its underpinning sciences are progressing with unprecedented rapidity. With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold. The means of fabricating and controlling matter on the nanoscale afford striking and unprecedented opportunities to exploit a variety of exotic phenomena such as quantum, nanophotonic and nanoelectromechanical effects. Moreover, researchers are elucidating new perspectives on the electronic and optical properties of matter because of the way that nanoscale materials bridge the disparate theories describing molecules and bulk matter. Surface phenomena also gain a greatly increased significance; even the well-known link between chemical reactivity and surface-to-volume ratio becomes a major determinant of physical properties, when it operates over nanoscale dimensions. Against this background, this comprehensive work is designed to address the need for a dynamic, authoritative and readily accessible source of information, capturing the full breadth of the subject. Its six volumes, covering a broad spectrum of disciplines including material sciences, chemistry, physics and life sciences, have been written and edited by an outstanding team of international experts. Addressing an extensive, cross-disciplinary audience, each chapter aims to cover key developments in a scholarly, readable and critical style, providing an indispensible first point of entry to the literature for scientists and technologists from interdisciplinary fields. The work focuses on the major classes of nanomaterials in terms of their synthesis, structure and applications, reviewing nanomaterials and their respective technologies in well-structured and comprehensive articles with extensive cross-references. It has been a constant surprise and delight to have found, amongst the rapidly escalating number who work in nanoscience and technology, so many highly esteemed authors willing to contribute. Sharing our anticipation of a major addition to the literature, they have also captured the excitement of the field itself in each carefully crafted chapter. Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for (largely) adhering to the given deadlines. Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception. We have greatly enjoyed working with them all, as we have with each other.

Download or read book Handbook on Synthesis Strategies for Advanced Materials written by A. K. Tyagi and published by Springer Nature. This book was released on 2021-08-17 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art coverage of synthesis of advanced functional materials. Unconventional synthetic routes play an important role in the synthesis of advanced materials as many new materials are metastable and cannot be synthesized by conventional methods. This book presents various synthesis methods such as conventional solid-state method, combustion method, a range of soft chemical methods, template synthesis, molecular precursor method, microwave synthesis, sono-chemical method and high-pressure synthesis. It provides a comprehensive overview of synthesis methods and covers a variety of materials, including ceramics, films, glass, carbon-based, and metallic materials. Many techniques for processing and surface functionalization are also discussed. Several engineering aspects of materials synthesis are also included. The contents of this book are useful for researchers and professionals working in the areas of materials and chemistry.

Download or read book Novel Synthetic Routes to High quality II VI Colloidal Nanocrystals written by Nathan E. Stott and published by . This book was released on 2004 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanometer-sized colloidal quantum dots, or nanocrystals, are of current scientific interest based on their mesoscopic properties as an intermediate state between molecular and bulk materials. Particles sizes of semiconductor materials smaller than the Bohr exciton radius result in a quantum confinement effect that allows the optical properties to be tuned within the band energies of the bulk material such that smaller sizes lead to higher energy transitions at the band edge. The small sizes and tunable monochromatic emission properties make these nanocrystals desirable for a variety of applications, both realized and sought after. Research to further the exploitation of quantum dots includes such applications as biological fluorescence tracer tags and imaging agents, high resolution displays, light emitting diodes (LEDs), low bandwidth lasers, photovoltaic solar cells, and future "nanoelectronics." The thesis of this dissertation is that high-quality II-VI colloidal nanocrystals, CdSe and (CdSe)ZnS in particular, can be synthesized using mild precursors, exerting fine control though the proper selection of ligands. Chapters 2 and 3 show that extremely high-quality CdSe nanocrystals can be synthesized using mild precursors such as Cd(acac)2 and Cd(OH)2 while achieving higher quantum efficiencies, higher reaction yields, smaller size-distributions, and with finer control over the final size in comparison to previous methods. In addition to the batch synthesis, Chapter 3 shows the development of a microfluidic flow reactor using a mixed highboiling STP liquid solvent. It is found that the temperature, flow rate, and precursor ratios are parameters that can be used to control the size and size-distributions of the final products. The CdSe cores are overcoated with ZnS from Zn(acac)2 to form highly stable and highly luminescent (core)shell colloids in Chapter 4. Chapter 5 develops qualitative arguments based on the Drago-Wayland extension of Hard-Soft Acid-Base Theory to describe the actions of surfactant ligands in the growth solution. It is shown that crystal growth inhibitors can be used to finely control nanocrystal growth, and the precursor-to-inhibitor ratio is fundamental to the final size.

Download or read book Semiconductor Nanocrystals and Metal Nanoparticles written by Tupei Chen and published by CRC Press. This book was released on 2016-10-14 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanocrystals and metal nanoparticles are the building blocks of the next generation of electronic, optoelectronic, and photonic devices. Covering this rapidly developing and interdisciplinary field, the book examines in detail the physical properties and device applications of semiconductor nanocrystals and metal nanoparticles. It begins with a review of the synthesis and characterization of various semiconductor nanocrystals and metal nanoparticles and goes on to discuss in detail their optical, light emission, and electrical properties. It then illustrates some exciting applications of nanoelectronic devices (memristors and single-electron devices) and optoelectronic devices (UV detectors, quantum dot lasers, and solar cells), as well as other applications (gas sensors and metallic nanopastes for power electronics packaging). Focuses on a new class of materials that exhibit fascinating physical properties and have many exciting device applications. Presents an overview of synthesis strategies and characterization techniques for various semiconductor nanocrystal and metal nanoparticles. Examines in detail the optical/optoelectronic properties, light emission properties, and electrical properties of semiconductor nanocrystals and metal nanoparticles. Reviews applications in nanoelectronic devices, optoelectronic devices, and photonic devices.