Download or read book Growth and Characterization of GeSn and SiGeSn Alloys for Optical Interconnects written by Hai Lin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades, the microelectronics industry has achieved previously unimagined success. Following Moore's law, the number of transistors in a chip has approximately doubled every 18 months and the size of a transistor has reduced down to 32nm. However, as the device size scales down, one of the major limitations in today's silicon integrated circuits comes from the electrical interconnects. In order to increase the interconnect density and decrease the interconnect energy, optical interconnects between chips or even on-chip have been proposed and widely investigated. The big challenge of integrating optics onto a Si chip is the compatibility, so group IV materials are considered. Optoelectronic devices for optical interconnects, such as modulators and detectors, have been demonstrated using both Si and Ge. A major issue now is the lack of a Si compatible light source. Because Si itself has very poor light emitting efficiency, current research focuses on Ge based semiconductors. There are two promising approaches to modify the band structure of Ge and make it a direct band gap material. This dissertation focuses on both of these approaches: applying biaxial tensile strain and alloying with Tin (Sn). In addition, combining these two methods is expected to achieve the goal with a more stable materials system. Therefore the ability to decouple these two effects and investigate the material properties independently is critical in our research. Ge1-xSnx alloys were grown by molecular beam epitaxy (MBE) machines at low growth temperatures (150-200°C) on InGaAs buffer layers on GaAs substrates. Ge1-xSnx alloys with up to 10.5% Sn have been demonstrated with high crystal quality in this dissertation. Crystal quality of Ge1-xSnx layers was characterized by atomic force microscopy (AFM) and transmission electron microscopy (TEM). Composition and strain were studied by X-ray diffraction (XRD), secondary ion mass spectroscopy (SIMS) and X-ray photoelectron spectroscopy (XPS). The optical properties of Ge1-xSnx alloys were determined by photoreflectance (PR) and photoluminescence (PL). The advantage of using InGaAs buffer layers is the separate control of the strain and composition effects on the material properties of Ge1-xSnx alloys. In this dissertation, Ge1-xSnx alloys with different Sn compositions and various levels of strain were grown. Room temperature PR measurements were used in this work to determine the direct bandgap from the maxima of the light- and heavy-hole bands to the bottom of [upper case Gamma] valley. The energy bowing parameter (bGeSn) was calculated from the bandgap of unstrained Ge1-xSnx alloys to describe the composition effect. The indirect to direct band gap transition for unstrained Ge1-xSnx alloys was estimated to be around 6~7% Sn composition from low-temperature PL studies. The effect of biaxial strain on the direct band gap, described by two deformation potentials (a and b), was investigated for the first time as well. These basic parameters are very useful for the design of optoelectronic devices based on strained Ge1-xSnx alloys. Additionally, the strain and composition contributions to Raman shift of Ge-Ge LO peak in Ge1-xSnx alloys were quantified separately as well. Moreover, Ge1-xSnx/ SixGe1-x-ySny quantum well (QW) structures are of great interest for photonic devices. Due to the large direct band gap of Si, SixGe1-x-ySny alloys have larger bandgap energies than Ge1-xSnx alloys by design, so as barrier layers they can confine injected carriers inside the active Ge1-xSnx well. Good crystal quality of SixGe1-x-ySny alloys were grown by MBE at low temperatures and annealed by RTA at 500°C in a forming gas ambient. The decoupling of the direct band gap and lattice constant of SixGe1-x-ySny alloys were demonstrated. This feature simplifies the strain engineering in QW designs. Finally, PL from SixGe1-x-ySny/Ge1-xSnx/ SixGe1-x-ySny double heterostructure was demonstrated experimentally for the first time. The measured PL peak energy matches the calculated value at room temperature, indicating that the basic materials properties determined in this dissertation are accurate. The observation of PL proves that these group IV alloys are promising candidates to make a Si-compatible laser for on chip optical interconnects.
Download or read book Design Fabrication and Characterization of Multifunctional Nanomaterials written by Sabu Thomas and published by Elsevier. This book was released on 2021-11-24 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design, Fabrication, and Characterization of Multifunctional Nanomaterials covers major techniques for the design, synthesis, and development of multifunctional nanomaterials. The chapters highlight the main characterization techniques, including X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, and scanning probe microscopy.The book explores major synthesis methods and functional studies, including: - Brillouin spectroscopy; - Temperature-dependent Raman spectroscopic studies; - Magnetic, ferroelectric, and magneto-electric coupling analysis; - Organ-on-a-chip methods for testing nanomaterials; - Magnetron sputtering techniques; - Pulsed laser deposition techniques; - Positron annihilation spectroscopy to prove defects in nanomaterials; - Electroanalytic techniques. This is an important reference source for materials science students, scientists, and engineers who are looking to increase their understanding of design and fabrication techniques for a range of multifunctional nanomaterials. - Explains the major design and fabrication techniques and processes for a range of multifunctional nanomaterials; - Demonstrates the design and development of magnetic, ferroelectric, multiferroic, and carbon nanomaterials for electronic applications, energy generation, and storage; - Green synthesis techniques and the development of nanofibers and thin films are also emphasized.
Download or read book 75th Anniversary of the Transistor written by Arokia Nathan and published by John Wiley & Sons. This book was released on 2023-08-01 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: 75th Anniversary of the Transistor 75th anniversary commemorative volume reflecting the transistor's development since inception to current state of the art 75th Anniversary of the Transistor is a commemorative anniversary volume to celebrate the invention of the transistor. The anniversary volume was conceived by the IEEE Electron Devices Society (EDS) to provide comprehensive yet compact coverage of the historical perspectives underlying the invention of the transistor and its subsequent evolution into a multitude of integration and manufacturing technologies and applications. The book reflects the transistor's development since inception to the current state of the art that continues to enable scaling to very large-scale integrated circuits of higher functionality and speed. The stages in this evolution covered are in chronological order to reflect historical developments. Narratives and experiences are provided by a select number of venerated industry and academic leaders, and retired veterans, of the semiconductor industry. 75th Anniversary of the Transistor highlights: Historical perspectives of the state-of-the-art pre-solid-state-transistor world (pre-1947) leading to the invention of the transistor Invention of the bipolar junction transistor (BJT) and analytical formulations by Shockley (1948) and their impact on the semiconductor industry Large scale integration, Moore's Law (1965) and transistor scaling (1974), and MOS/LSI, including flash memories — SRAMs, DRAMs (1963), and the Toshiba NAND flash memory (1989) Image sensors (1986), including charge-coupled devices, and related microsensor applications With comprehensive yet succinct and accessible coverage of one of the cornerstones of modern technology, 75th Anniversary of the Transistor is an essential reference for engineers, researchers, and undergraduate students looking for historical perspective from leaders in the field.
Download or read book Silicon Photonics IV written by David J. Lockwood and published by Springer Nature. This book was released on 2021-06-08 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fourth book in the series Silicon Photonics gathers together reviews of recent advances in the field of silicon photonics that go beyond already established and applied concepts in this technology. The field of research and development in silicon photonics has moved beyond improvements of integrated circuits fabricated with complementary metal–oxide–semiconductor (CMOS) technology to applications in engineering, physics, chemistry, materials science, biology, and medicine. The chapters provided in this book by experts in their fields thus cover not only new research into the highly desired goal of light production in Group IV materials, but also new measurement regimes and novel technologies, particularly in information processing and telecommunication. The book is suited for graduate students, established scientists, and research engineers who want to update their knowledge in these new topics.
Download or read book Silicon Photonics written by M. Jamal Deen and published by John Wiley & Sons. This book was released on 2012-03-30 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: The creation of affordable high speed optical communications using standard semiconductor manufacturing technology is a principal aim of silicon photonics research. This would involve replacing copper connections with optical fibres or waveguides, and electrons with photons. With applications such as telecommunications and information processing, light detection, spectroscopy, holography and robotics, silicon photonics has the potential to revolutionise electronic-only systems. Providing an overview of the physics, technology and device operation of photonic devices using exclusively silicon and related alloys, the book includes: Basic Properties of Silicon Quantum Wells, Wires, Dots and Superlattices Absorption Processes in Semiconductors Light Emitters in Silicon Photodetectors , Photodiodes and Phototransistors Raman Lasers including Raman Scattering Guided Lightwaves Planar Waveguide Devices Fabrication Techniques and Material Systems Silicon Photonics: Fundamentals and Devices outlines the basic principles of operation of devices, the structures of the devices, and offers an insight into state-of-the-art and future developments.
Download or read book Semiconductor Laser Theory written by Prasanta Kumar Basu and published by CRC Press. This book was released on 2015-06-17 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed from the authors' classroom-tested material, Semiconductor Laser Theory takes a semiclassical approach to teaching the principles, structure, and applications of semiconductor lasers. Designed for graduate students in physics, electrical engineering, and materials science, the text covers many recent developments, including diode lasers u
Download or read book Conference Papers Index written by and published by . This book was released on 1987 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials Chemistry written by Bradley D. Fahlman and published by Springer. This book was released on 2018-08-28 with total page 817 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd edition of this successful textbook continues to build on the strengths that were recognized by a 2008 Textbook Excellence Award from the Text and Academic Authors Association (TAA). Materials Chemistry addresses inorganic-, organic-, and nano-based materials from a structure vs. property treatment, providing a suitable breadth and depth coverage of the rapidly evolving materials field — in a concise format. The 3rd edition offers significant updates throughout, with expanded sections on sustainability, energy storage, metal-organic frameworks, solid electrolytes, solvothermal/microwave syntheses, integrated circuits, and nanotoxicity. Most appropriate for Junior/Senior undergraduate students, as well as first-year graduate students in chemistry, physics, or engineering fields, Materials Chemistry may also serve as a valuable reference to industrial researchers. Each chapter concludes with a section that describes important materials applications, and an updated list of thought-provoking questions.
Download or read book Flash Lamp Annealing written by Lars Rebohle and published by . This book was released on 2019 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive survey of the technology of flash lamp annealing (FLA) for thermal processing of semiconductors. It gives a detailed introduction to the FLA technology and its physical background. Advantages, drawbacks and process issues are addressed in detail and allow the reader to properly plan and perform their own thermal processing. Moreover, this books gives a broad overview of the applications of flash lamp annealing, including a comprehensive literature survey. Several case studies of simulated temperature profiles in real material systems give the reader the necessary insight into the underlying physics and simulations. This book is a valuable reference work for both novice and advanced users.
Download or read book Shock and Materials written by Stepan S. Batsanov and published by Springer. This book was released on 2018-03-17 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights how the properties and structure of materials are affected by dynamic high pressures generated by explosions, projectile impacts, laser compression, electric discharge or ball milling. Starting with the basics of shock-wave physics and an outline of experimental techniques, it then surveys dynamic compressibility and equations of state of various substances, phase transitions and syntheses of novel compounds under shock. It covers various industrial applications including hardening of metals and grinding (fragmentation) of solids, saturation of solids with defects for use as catalysts, production of superhard materials (synthetic diamond, BN (boron nitride)) and nanomaterials, especially nanodiamond, and discusses state-of-the-art techniques such as combining dynamic and static compression to obtain monolithic materials.
Download or read book Heusler Alloys written by Claudia Felser and published by Springer. This book was released on 2015-11-12 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of the physics of Heusler compounds ranging from fundamental properties of these alloys to their applications. Especially Heusler compounds as half-metallic ferromagnetic and topological insulators are important in condensed matter science due to their potential in magnetism and as materials for energy conversion. The book is written by world-leaders in this field. It offers an ideal reference to researchers at any level.
Download or read book Structure Property Relations in Nonferrous Metals written by Alan Russell and published by John Wiley & Sons. This book was released on 2005-07-08 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This junior/senior textbook presents fundamental concepts ofstructure property relations and a description of how theseconcpets apply to every metallic element except iron. Part One of the book describes general concepts of crystalstructure, microstructure and related factors on the mechanical,thermal, magnetic and electronic properties of nonferrous metals,intermetallic compounds and metal matrix composites. Part Two discusses all the nonferrous metallic elements from twoperspectives: First it explains how the concepts presented in PartOne define the properties of a particular metallic element and itsalloys. Second is a description of the major engineering uses ofeach metal. This section features sidebar pieces describingparticular physical property oddities, engineering applications andcase studies. An Instructor's Manual presenting detailed solutionsto all the problems in the book is available from the Wileyeditorial department. An Instructor's Manual presenting detailed solutions to all theproblems in the book is available from the Wiley editorialdepartment.
Download or read book Photonic Devices written by Jia-ming Liu and published by Cambridge University Press. This book was released on 2009-06-11 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonic devices lie at the heart of the communications revolution, and have become a large and important part of the electronic engineering field, so much so that many colleges now treat this as a subject in its own right. With this in mind, the author has put together a unique textbook covering every major photonic device, and striking a careful balance between theoretical and practical concepts. The book assumes a basic knowledge of optics, semiconductors and electromagnetic waves. Many of the key background concepts are reviewed in the first chapter. Devices covered include optical fibers, couplers, electro-optic devices, magneto-optic devices, lasers and photodetectors. Problems are included at the end of each chapter and a solutions set is available. The book is ideal for senior undergraduate and graduate courses, but being device driven it is also an excellent engineers' reference.
Download or read book High Efficient Low Cost Photovoltaics written by Vesselinka Petrova-Koch and published by Springer Science & Business Media. This book was released on 2009 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: A bird's-eye view of the developmental trends and problems of recent photovoltaics is presented. The worldwide effort to develop high-efficiency low-cost PV modules, making use of most efficient solar cells and clever low-cost solar concentrators is described.
Download or read book The Physics of Semiconductors written by Marius Grundmann and published by Springer Nature. This book was released on 2021-03-06 with total page 905 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th edition of this highly successful textbook features copious material for a complete upper-level undergraduate or graduate course, guiding readers to the point where they can choose a specialized topic and begin supervised research. The textbook provides an integrated approach beginning from the essential principles of solid-state and semiconductor physics to their use in various classic and modern semiconductor devices for applications in electronics and photonics. The text highlights many practical aspects of semiconductors: alloys, strain, heterostructures, nanostructures, amorphous semiconductors, and noise, which are essential aspects of modern semiconductor research but often omitted in other textbooks. This textbook also covers advanced topics, such as Bragg mirrors, resonators, polarized and magnetic semiconductors, nanowires, quantum dots, multi-junction solar cells, thin film transistors, and transparent conductive oxides. The 4th edition includes many updates and chapters on 2D materials and aspects of topology. The text derives explicit formulas for many results to facilitate a better understanding of the topics. Having evolved from a highly regarded two-semester course on the topic, The Physics of Semiconductors requires little or no prior knowledge of solid-state physics. More than 2100 references guide the reader to historic and current literature including original papers, review articles and topical books, providing a go-to point of reference for experienced researchers as well.
Download or read book Textbook of Nanoscience and Nanotechnology written by B.S. Murty and published by Springer Science & Business Media. This book was released on 2013-12-06 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is meant to serve as a textbook for beginners in the field of nanoscience and nanotechnology. It can also be used as additional reading in this multifaceted area. It covers the entire spectrum of nanoscience and technology: introduction, terminology, historical perspectives of this domain of science, unique and widely differing properties, advances in the various synthesis, consolidation and characterization techniques, applications of nanoscience and technology and emerging materials and technologies.
Download or read book Micromanufacturing and Nanotechnology written by Nitaigour P. Mahalik and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micromanufacturing and Nanotechnology is an emerging technological infrastructure and process that involves manufacturing of products and systems at the micro and nano scale levels. Development of micro and nano scale products and systems are underway due to the reason that they are faster, accurate and less expensive. Moreover, the basic functional units of such systems possesses remarkable mechanical, electronic and chemical properties compared to the macro-scale counterparts. Since this infrastructure has already become the prefered choice for the design and development of next generation products and systems it is now necessary to disseminate the conceptual and practical phenomenological know-how in a broader context. This book incorporates a selection of research and development papers. Its scope is the history and background, underlynig design methodology, application domains and recent developments.
