Biosynthesis Of Cadmium Chalcogenide Quantum Dots And Enhancement Of Their Functional Properties Via Surface Modification

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Biosynthesis of Cadmium Chalcogenide Quantum Dots and Enhancement of Their Functional Properties Via Surface Modification

Author : Zhou Yang
Publisher :
ISBN 13 : 9781369338386
Total Pages : 128 pages
Book Rating : 4.3/5 (383 download)

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Book Synopsis Biosynthesis of Cadmium Chalcogenide Quantum Dots and Enhancement of Their Functional Properties Via Surface Modification by : Zhou Yang

Download or read book Biosynthesis of Cadmium Chalcogenide Quantum Dots and Enhancement of Their Functional Properties Via Surface Modification written by Zhou Yang and published by . This book was released on 2016 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Post-treatments, such as core/shell growth, phase transfer, and photoenhancement were utilized to modify the surface chemistry of these nanocrystals to improve their properties for potential applications. Core/shell structures on both CdS and CdSe cores with different shell structure (ZnS for CdS, CdS for CdSe) were achieved. This significantly improved their optical properties, for example, core/shell CdSe/CdS exhibits a quantum yield up to 12 %. A facile phase transfer protocol was proposed to efficiently transfer the QDs from aqueous phase to organic phase. In addition, photoenhancement via UV illumination was also introduced for CdSe QDs and their photoluminescence was highly improved. Owing to the post-treatments, the qualities of these cell-based QDs are comparable to that from chemical synthesis routes. Our biosynthetic approach to cadmium chalcogenide QDs production provides a viable pathway to realize the promise of green biomanufacturing of these materials for optoelectronic, energy, medicine and other emerging technological applications.

Ternary Quantum Dots

Author : Oluwatobi Samuel Oluwafemi
Publisher : Woodhead Publishing
ISBN 13 : 0128183047
Total Pages : 282 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Ternary Quantum Dots by : Oluwatobi Samuel Oluwafemi

Download or read book Ternary Quantum Dots written by Oluwatobi Samuel Oluwafemi and published by Woodhead Publishing. This book was released on 2021-07-02 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ternary Quantum Dots: Synthesis, Properties, and Applications reviews the latest advances in ternary (I-III-VI) chalcopyrite quantum dots (QDs), along with their synthesis, properties and applications. Sections address the fundamental key concepts of ternary quantum dots, progress in synthesis strategies (i.e., organic and aqueous synthesis), and characterization methods (i.e., transmission electron microscopy, dynamic light scattering, etc.). Properties of ternary quantum dots are comprehensively reviewed, including optical, chemical and physical properties. The factors and mechanisms of the cytotoxicity of ternary quantum dot-based nanomaterials are also described. Since ternary chalcopyrite quantum dots are less toxic and more environmentally benign than conventional binary II-VI chalcogenide quantum dots, they are being investigated to replace conventional quantum dots in a range of applications. Thus, this book reviews QDs in various applications, such as solar cells, photocatalytic, sensors and bio-applications. - Reviews fundamental concepts of ternary quantum dots and quantum dot-nanocomposites including the most relevant synthesis strategies, key properties, and characterization techniques - Delves into the cytotoxicity of quantum dots looking at the factors and mechanisms that influence cytotoxicity including demonstration of cytotoxicity assays for in vitro and in vivo tests - Touches on the many applications of ternary quantum dots including biomedical applications, applications in solar cells, sensing applications, and photocatalytic applications

Cadmium Telluride Quantum Dots

Author : John Donegan
Publisher : CRC Press
ISBN 13 : 9814316091
Total Pages : 244 pages
Book Rating : 4.8/5 (143 download)

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Book Synopsis Cadmium Telluride Quantum Dots by : John Donegan

Download or read book Cadmium Telluride Quantum Dots written by John Donegan and published by CRC Press. This book was released on 2016-04-19 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades, semiconductor quantum dots-small colloidal nanoparticles-have garnered a great deal of scientific interest because of their unique properties. Among nanomaterials, CdTe holds special technological importance as the only known II-VI material that can form conventional p-n junctions. This makes CdTe very important for the dev

Quantum Dots

Author : Rakshit Ameta
Publisher : Elsevier
ISBN 13 : 0323858953
Total Pages : 393 pages
Book Rating : 4.3/5 (238 download)

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Book Synopsis Quantum Dots by : Rakshit Ameta

Download or read book Quantum Dots written by Rakshit Ameta and published by Elsevier. This book was released on 2022-09-20 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Dots: Fundamentals, Synthesis and Applications compiles key information, along with practical guidance on quantum dot synthesis and applications. Beginning with an introduction, Part One highlights such foundational knowledge as growth mechanisms, shape and composition, electrochemical properties, and production scale-up for quantum dots. Part Two goes on to provide practical guides to key chemical, physical and biological methods for the synthesis of quantum dots, with Part Three reviewing the application of quantum dots and a range of important use cases, including photocatalysis, energy cells and medical imaging. Drawing on the knowledge of its expert authors, this comprehensive book provides practical guidance for all those who already study, develop or use quantum dots in their work. - Presents the foundational information needed to effectively understand and manipulate quantum dot properties - Consolidates key methods of quantum dot synthesis in a single volume - Reviews both current and future practical applications of quantum dots across a range of important fields

Synthesis, Properties and Surface Modifications of Cdse Quantum Dots

Author : Himani Sharma
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783843363624
Total Pages : 204 pages
Book Rating : 4.3/5 (636 download)

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Book Synopsis Synthesis, Properties and Surface Modifications of Cdse Quantum Dots by : Himani Sharma

Download or read book Synthesis, Properties and Surface Modifications of Cdse Quantum Dots written by Himani Sharma and published by LAP Lambert Academic Publishing. This book was released on 2010-11 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emergence of colloidal semiconductor nanocrystals has generated great fundamental and technical interest in recent years. The size dependent emission property for Cadmium Selenide quantum dots renders it indispensable in the field of nanocrystal-based emitters used in electronic and bioelectronic devices. Investigation of these semiconductor quantum dots reveals the evolution of the electronic structure from an extended solid state to the molecular limit, an extremely important issue of basic and applied research in condensed matter physics. The work presented in this book mainly deals with the synthesis and characterization of chemically synthesized CdSe nanoparticles. A detailed investigation of the optical, structural and morphological properties of CdSe QDs and their correlation with both core and surface has been carried out. The theoretical aspect of quantum confinement and stability of CdSe quantum dots with organic and inorganic layers, are correlated to understand the surface modification aspects. Finally CdSe-polymer nanocomposites were discussed for their potential application in biomarkers and photo-electronic devices.

Colloidal Quantum Dot Optoelectronics and Photovoltaics

Author : Gerasimos Konstantatos
Publisher : Cambridge University Press
ISBN 13 : 0521198267
Total Pages : 329 pages
Book Rating : 4.5/5 (211 download)

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Book Synopsis Colloidal Quantum Dot Optoelectronics and Photovoltaics by : Gerasimos Konstantatos

Download or read book Colloidal Quantum Dot Optoelectronics and Photovoltaics written by Gerasimos Konstantatos and published by Cambridge University Press. This book was released on 2013-11-07 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures the most up-to-date research in the field, written in an accessible style by the world's leading experts.

Synthesis of Cadmium Chalcogenide Based Quantum Dots for Enhanced Multiple Exciton Generation

Author : Robert Christopher Page
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Synthesis of Cadmium Chalcogenide Based Quantum Dots for Enhanced Multiple Exciton Generation by : Robert Christopher Page

Download or read book Synthesis of Cadmium Chalcogenide Based Quantum Dots for Enhanced Multiple Exciton Generation written by Robert Christopher Page and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of Colloidal Lead Chalcogenide Quantum Dots and Progress Towards Single Photons On-demand

Author : Keith Alexander Abel
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)

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Book Synopsis Synthesis and Characterization of Colloidal Lead Chalcogenide Quantum Dots and Progress Towards Single Photons On-demand by : Keith Alexander Abel

Download or read book Synthesis and Characterization of Colloidal Lead Chalcogenide Quantum Dots and Progress Towards Single Photons On-demand written by Keith Alexander Abel and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanometer-sized semiconductor crystals, termed 'quantum dots', are of fundamental interest because of their size-tunable properties. Three-dimensional quantum confinement of charge carriers by the small crystal size results in discrete atomic-like electronic states. This dissertation describes the synthesis and in-depth characterization of lead chalcogenide colloidal quantum dots for forthcoming applications as near-infrared single photon emitters. An efficient single photon source that operates at telecommunication wavelengths (between 1.3 and 1.6?m) is a basic requirement for many photonic quantum technologies, such as quantum computing and quantum cryptography. Chapters 1 and 2 of this work provide an introduction to colloidal quantum dots and their use as single photon emitters. It includes a description of photonic crystal microcavities and their ability to enhance the spontaneous emission rate of quantum dots. The synthesis and basic characterization of PbSe and PbS quantum dots is then discussed in chapter 3. In particular, a new synthetic method for the preparation of highly photoluminescent PbS quantum dots is presented. PbSe/CdSe core/shell quantum dots prepared by a cation exchange reaction are also described and a significant improvement in photo-stability is shown. Chapter 3 concludes with a description of three different surface modification techniques. PbSe core and PbSe/CdSe core/shell materials are investigated further in chapter 4 by advanced characterization techniques that include high-angle annular dark field (HAADF) imaging, energy-filtered transmission electron microscopy (EF-TEM) imaging, energy-dependent X-ray photo-electron spectroscopy (XPS), small angle X-ray scattering (SAXS), and small angle neutron scattering (SANS). The information obtained from these techniques is combined to form a structural model of the PbSe core and PbSe/CdSe core/shell quantum dots with greater complexity than previously reported. In chapter 5, the temperature-dependent photoluminescence from PbSe and PbSe/CdSe core/shell quantum dots is discussed and a thermal model is presented that accounts for the large (non-trivial) temperature dependence of the Stokes shift and photoluminescence lineshape over the entire temperature range (4.5 to 295 K). Chapter 6 examines two scalable methods to integrate the colloidal quantum dots into silicon two-dimensional photonic crystal slab microcavities (a requirement for efficient single photon emission). Finally, conclusions and possible future work are discussed in chapter 7.

Semiconductor Nanoclusters - Physical, Chemical, and Catalytic Aspects

Author : P.V. Kamat
Publisher :
ISBN 13 :
Total Pages : 490 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Semiconductor Nanoclusters - Physical, Chemical, and Catalytic Aspects by : P.V. Kamat

Download or read book Semiconductor Nanoclusters - Physical, Chemical, and Catalytic Aspects written by P.V. Kamat and published by . This book was released on 1997 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the shift over the past decade from theoretical descriptions to field utilizations of nanostructure-based devices, researchers present the salient features of nanocrystalline semiconductor materials for scientists, engineers, and advanced graduate students in physical chemistry and materials science. The topics include preparing and characterizing nanoparticles, sonochemistry in colloidal systems, the pseudopotential theory of nanometer silicon quantum dots, size quantization in semiconductor films deposited by chemical solutions, electronic junctions, analytical chemistry, semiconductor-mediated photocatalysis for organic synthesis, and applications in purifying air. Annotation copyrighted by Book News, Inc., Portland, OR

Chalcogenide-Based Nanomaterials as Photocatalysts

Author : Mohammad Mansoob Khan
Publisher : Elsevier
ISBN 13 : 0128209178
Total Pages : 378 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Chalcogenide-Based Nanomaterials as Photocatalysts by : Mohammad Mansoob Khan

Download or read book Chalcogenide-Based Nanomaterials as Photocatalysts written by Mohammad Mansoob Khan and published by Elsevier. This book was released on 2021-04-07 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chalcogenide-Based Nanomaterials as Photocatalysts deals with the different types of chalcogenide-based photocatalytic reactions, covering the fundamental concepts of photocatalytic reactions involving chalcogenides for a range of energy and environmental applications. Sections focus on nanostructure control, synthesis methods, activity enhancement strategies, environmental applications, and perspectives of chalcogenide-based nanomaterials. The book offers guidelines for designing new chalcogenide-based nanoscale photocatalysts at low cost and high efficiency for efficient utilization of solar energy in the areas of energy production and environment remediation. - Provides information on the development of novel chalcogenide-based nanomaterials - Outlines the fundamentals of chalcogenides-based photocatalysis - Includes techniques for heterogeneous catalysis based on chalcogenide-based nanomaterials

Semiconductor Nanocrystals

Author : Alexander L. Efros
Publisher : Springer Science & Business Media
ISBN 13 : 1475736770
Total Pages : 277 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Semiconductor Nanocrystals by : Alexander L. Efros

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.

Solution-Processable Components for Organic Electronic Devices

Author : Beata Luszczynska
Publisher : John Wiley & Sons
ISBN 13 : 352734442X
Total Pages : 686 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Solution-Processable Components for Organic Electronic Devices by : Beata Luszczynska

Download or read book Solution-Processable Components for Organic Electronic Devices written by Beata Luszczynska and published by John Wiley & Sons. This book was released on 2019-09-16 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides first-hand insights into advanced fabrication techniques for solution processable organic electronics materials and devices The field of printable organic electronics has emerged as a technology which plays a major role in materials science research and development. Printable organic electronics soon compete with, and for specific applications can even outpace, conventional semiconductor devices in terms of performance, cost, and versatility. Printing techniques allow for large-scale fabrication of organic electronic components and functional devices for use as wearable electronics, health-care sensors, Internet of Things, monitoring of environment pollution and many others, yet-to-be-conceived applications. The first part of Solution-Processable Components for Organic Electronic Devices covers the synthesis of: soluble conjugated polymers; solution-processable nanoparticles of inorganic semiconductors; high-k nanoparticles by means of controlled radical polymerization; advanced blending techniques yielding novel materials with extraordinary properties. The book also discusses photogeneration of charge carriers in nanostructured bulk heterojunctions and charge carrier transport in multicomponent materials such as composites and nanocomposites as well as photovoltaic devices modelling. The second part of the book is devoted to organic electronic devices, such as field effect transistors, light emitting diodes, photovoltaics, photodiodes and electronic memory devices which can be produced by solution-based methods, including printing and roll-to-roll manufacturing. The book provides in-depth knowledge for experienced researchers and for those entering the field. It comprises 12 chapters focused on: ? novel organic electronics components synthesis and solution-based processing techniques ? advanced analysis of mechanisms governing charge carrier generation and transport in organic semiconductors and devices ? fabrication techniques and characterization methods of organic electronic devices Providing coverage of the state of the art of organic electronics, Solution-Processable Components for Organic Electronic Devices is an excellent book for materials scientists, applied physicists, engineering scientists, and those working in the electronics industry.

Semiconductor Nanocrystal Quantum Dots

Author : Andrey Rogach
Publisher : Springer Science & Business Media
ISBN 13 : 3211752374
Total Pages : 374 pages
Book Rating : 4.2/5 (117 download)

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Book Synopsis Semiconductor Nanocrystal Quantum Dots by : Andrey Rogach

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.

Quantum-dot Based Light-emitting Diodes

Author : Morteza Sasani Ghamsari
Publisher : BoD – Books on Demand
ISBN 13 : 9535135759
Total Pages : 171 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Quantum-dot Based Light-emitting Diodes by : Morteza Sasani Ghamsari

Download or read book Quantum-dot Based Light-emitting Diodes written by Morteza Sasani Ghamsari and published by BoD – Books on Demand. This book was released on 2017-10-25 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dot-based light emitting diodes were assigned to bringing together the latest and most important progresses in light emitting diode (LED) technologies. In addition, they were dedicated to gain the perspective of LED technology for all of its advancements and innovations due to the employment of semiconductor nanocrystals. Highly selective, the primary aim was to provide a visual source for high-urgency work that will define the future directions relating to the organic light emitting diode (OLED), with the expectation for lasting scientific and technological impact. The editor hopes that the chapters verify the realization of the mentioned aims that have been considered for editing of this book. Due to the rapidly growing OLED technology, we wish this book to be useful for any progress that can be achieved in future.

Metal Chalcogenide Nanostructures for Renewable Energy Applications

Author : Ahsanulhaq Qurashi
Publisher : John Wiley & Sons
ISBN 13 : 1119008921
Total Pages : 364 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Metal Chalcogenide Nanostructures for Renewable Energy Applications by : Ahsanulhaq Qurashi

Download or read book Metal Chalcogenide Nanostructures for Renewable Energy Applications written by Ahsanulhaq Qurashi and published by John Wiley & Sons. This book was released on 2014-11-21 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first ever reference book that focuses on metal chalcogenide semiconductor nanostructures for renewable energy applications encapsulates the state-of-the-art in multidisciplinary research on the metal chalcogenide semiconductor nanostructures (nanocrystals, nanoparticles, nanorods, nanowires, nanobelts, nanoflowers, nanoribbons and more). The properties and synthesis of a class of nanomaterials is essential to renewable energy manufacturing and this book focuses on the synthesis of metal chalcogendie nanostructures, their growth mechanism, optical, electrical, and other important properties and their applications in different diverging fields like photovoltaics, hydrogen production, theromelectrics, lithium battery, energy storage, photocatalysis, sensors. An important reference source for students, scientists, engineers, researchers and industrialists working on nanomaterials-based energy aspects associated with chemistry, physics, materials science, electrical engineering, energy science and technology, and environmental science.

Quantum Dot Sensors

Author : John Callan
Publisher : CRC Press
ISBN 13 : 9814316008
Total Pages : 232 pages
Book Rating : 4.8/5 (143 download)

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Book Synopsis Quantum Dot Sensors by : John Callan

Download or read book Quantum Dot Sensors written by John Callan and published by CRC Press. This book was released on 2013-01-24 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consisting of six chapters, written by experts in their field, this book charts the progress made in the use of quantum dots as the signaling component in optical sensors since their discovery in the early 1980s. In particular, it focuses on CdS-, CdSe-, and CdTe-type QDs due to their emission in the visible region of the electromagnetic spectrum. The book begins by detailing the range of methods currently used for the preparation and passivation of core/core–shell quantum dots and follows with a discussion on their electrochemical properties and potential toxicity. The book culminates by focusing on how electron and energy transfer mechanisms can be utilized to generate a range of quantum dot-based probes. This is the first text of its kind dedicated to quantum dot-based sensors and will appeal to those readers who have an interest in working with these versatile nanoparticles.

Fundamental Principles of Optical Lithography

Author : Chris Mack
Publisher : John Wiley & Sons
ISBN 13 : 1119965071
Total Pages : 503 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis Fundamental Principles of Optical Lithography by : Chris Mack

Download or read book Fundamental Principles of Optical Lithography written by Chris Mack and published by John Wiley & Sons. This book was released on 2011-08-10 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fabrication of an integrated circuit requires a variety of physical and chemical processes to be performed on a semiconductor substrate. In general, these processes fall into three categories: film deposition, patterning, and semiconductor doping. Films of both conductors and insulators are used to connect and isolate transistors and their components. By creating structures of these various components millions of transistors can be built and wired together to form the complex circuitry of modern microelectronic devices. Fundamental to all of these processes is lithography, ie, the formation of three-dimensional relief images on the substrate for subsequent transfer of the pattern to the substrate. This book presents a complete theoretical and practical treatment of the topic of lithography for both students and researchers. It comprises ten detailed chapters plus three appendices with problems provided at the end of each chapter. Additional Information: Visiting http://www.lithoguru.com/textbook/index.html enhances the reader's understanding as the website supplies information on how you can download a free laboratory manual, Optical Lithography Modelling with MATLAB®, to accompany the textbook. You can also contact the author and find help for instructors.