Download or read book Electronic States of High k Oxides in Gate Stack Structures written by Chiyu Zhu and published by . This book was released on 2012 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, in-situ X-ray and ultraviolet photoemission spectroscopy have been employed to study the interface chemistry and electronic structure of potential high-k gate stack materials. In these gate stack materials, HfO2 and La2O3 are selected as high-k dielectrics, VO2 and ZnO serve as potential channel layer materials. The gate stack structures have been prepared using a reactive electron beam system and a plasma enhanced atomic layer deposition system. Three interrelated issues represent the central themes of the research: 1) the interface band alignment, 2) candidate high-k materials, and 3) band bending, internal electric fields, and charge transfer. 1) The most highlighted issue is the band alignment of specific high-k structures. Band alignment relationships were deduced by analysis of XPS and UPS spectra for three different structures: a) HfO2/VO2/SiO2/Si, b) HfO2-La2O3/ZnO/SiO2/Si, and c) HfO2/VO2/ HfO2/SiO2/Si. The valence band offset of HfO2/VO2, ZnO/SiO2 and HfO2/SiO2 are determined to be 3.4 ± 0.1, 1.5 ± 0.1, and 0.7 ± 0.1 eV. The valence band offset between HfO2-La2O3 and ZnO was almost negligible. Two band alignment models, the electron affinity model and the charge neutrality level model, are discussed. The results show the charge neutrality model is preferred to describe these structures. 2) High-k candidate materials were studied through comparison of pure Hf oxide, pure La oxide, and alloyed Hf-La oxide films. An issue with the application of pure HfO2 is crystallization which may increase the leakage current in gate stack structures. An issue with the application of pure La2O3 is the presence of carbon contamination in the film. Our study shows that the alloyed Hf-La oxide films exhibit an amorphous structure along with reduced carbon contamination. 3) Band bending and internal electric fields in the gate stack structure were observed by XPS and UPS and indicate the charge transfer during the growth and process. The oxygen plasma may induce excess oxygen species with negative charges, which could be removed by He plasma treatment. The final HfO2 capping layer deposition may reduce the internal potential inside the structures. The band structure was approaching to a flat band condition.

Download or read book Advanced Gate Stacks for High Mobility Semiconductors written by Athanasios Dimoulas and published by Springer Science & Business Media. This book was released on 2008-01-01 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive monograph on gate stacks in semiconductor technology. It covers the major latest developments and basics and will be useful as a reference work for researchers, engineers and graduate students alike. The reader will get a clear view of what has been done so far, what is the state-of-the-art and which are the main challenges ahead before we come any closer to a viable Ge and III-V MOS technology.

Download or read book High k Materials in Multi Gate FET Devices written by Shubham Tayal and published by CRC Press. This book was released on 2021-09-16 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-k Materials in Multi-Gate FET Devices focuses on high-k materials for advanced FET devices. It discusses emerging challenges in the engineering and applications and considers issues with associated technologies. It covers the various way of utilizing high-k dielectrics in multi-gate FETs for enhancing their performance at the device as well as circuit level. Provides basic knowledge about FET devices Presents the motivation behind multi-gate FETs, including current and future trends in transistor technologies Discusses fabrication and characterization of high-k materials Contains a comprehensive analysis of the impact of high-k dielectrics utilized in the gate-oxide and the gate-sidewall spacers on the GIDL of emerging multi-gate FET architectures Offers detailed application of high-k materials for advanced FET devices Considers future research directions This book is of value to researchers in materials science, electronics engineering, semiconductor device modeling, IT, and related disciplines studying nanodevices such as FinFET and Tunnel FET and device-circuit codesign issues.

Download or read book High k Gate Dielectrics for CMOS Technology written by Gang He and published by John Wiley & Sons. This book was released on 2012-08-10 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art overview of high-k dielectric materials for advanced field-effect transistors, from both a fundamental and a technological viewpoint, summarizing the latest research results and development solutions. As such, the book clearly discusses the advantages of these materials over conventional materials and also addresses the issues that accompany their integration into existing production technologies. Aimed at academia and industry alike, this monograph combines introductory parts for newcomers to the field as well as advanced sections with directly applicable solutions for experienced researchers and developers in materials science, physics and electrical engineering.

Download or read book Physics and Technology of High k Materials 9 written by S. Kar and published by The Electrochemical Society. This book was released on 2011 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Defects in HIgh k Gate Dielectric Stacks written by Evgeni Gusev and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this book is to review at the nano and atomic scale the very complex scientific issues that pertain to the use of advanced high dielectric constant (high-k) materials in next generation semiconductor devices. One of the key obstacles to integrate this novel class of materials into Si nano-technology are the electronic defects in high-k dielectrics. It has been established that defects do exist in high-k dielectrics and they play an important role in device operation. The unique feature of this book is a special focus on the important issue of defects. The subject is covered from various angles, including silicon technology, processing aspects, materials properties, electrical defects, microstructural studies, and theory. The authors who have contributed to the book represents a diverse group of leading scientists from academic, industrial and governmental labs worldwide who bring a broad array of backgrounds (basic and applied physics, chemistry, electrical engineering, surface science, and materials science). The contributions to this book are accessible to both expert scientists and engineers who need to keep up with leading edge research, and newcomers to the field who wish to learn more about the exciting basic and applied research issues relevant to next generation device technology.

Download or read book Physics and Technology of High k Gate Dielectrics II written by Samares Kar and published by The Electrochemical Society. This book was released on 2004 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume is the proceedings of The Second International Symposium on High Dielectric Constant Materials: Materials Science, Processing, Reliability, and Manufacturing Issues ... and was held during [the] 204th Meeting [of the Electrochemical Society] ..."--P. v.

Download or read book Characterization of High k Gate Stacks in Metal Oxide Semiconductor Capacitors written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research has been to use off-line characterization techniques to establish material-specific properties of gate-stack constituents (i.e., high-k dielectric stacks and electrodes) and complete gate-stack structures. Hence, the characterization methodologies were established to evaluate high-k dielectrics at various processing levels, which, in part, determine the final characteristics of an advanced gate-stack device. Material systems that were investigated include: Al-O, Hf-Si-O, Zr-Si-O, Ti-O, Ta-O and Sr-Ti-O. Various physical and electrical characterization techniques were used to establish fundamental understandings of the materials selected, thin-film growth/deposition processes, and gate-stack structures. General conclusions for stable and unstable gate-dielectric materials have been establishedregarding the presence of a problematic interfacial layer at the Si/dielectric interface, graded dielectric layers, and the stability of gate electrodes on high-k dielectrics. The nanometer-scale chemistry of a gate-stack capacitor whose expected structure is Si/SiOxNy/Ta2O5/TiN/Al was studied by high-resolution electron-energy-loss spectroscopy in a scanning transmission electron microscope. Elemental profiles with near-atomic-level resolution for Si, Ti, N, Al, and O demonstrate that the device structure deviates drastically from the expectation and is chemically complex. It is concluded that the graded distribution of certain elements across the gate-stack capacitor completely precludes a band-structure model that assumes abrupt interfaces and chemically discrete layers. This study impacted on subsequent interpretations of flatband voltage extractions and electrical degradation following backside metallization/postmetallization annealing for capacitors whose dielectric-stack was based on Ta-O. Detailed and extensive electrical characterizations of Pt/SiOx/Sr-Ti-O/Si MOS capacitors were carried out to investigate reliability issues in a bi-layer gate.

Download or read book High k Gate Dielectrics written by Michel Houssa and published by CRC Press. This book was released on 2003-12-01 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: The drive toward smaller and smaller electronic componentry has huge implications for the materials currently being used. As quantum mechanical effects begin to dominate, conventional materials will be unable to function at scales much smaller than those in current use. For this reason, new materials with higher electrical permittivity will be requ

Download or read book Physics and Technology of High k Gate Dielectrics 4 written by Samares Kar and published by The Electrochemical Society. This book was released on 2006 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue covers, in detail, all aspects of the physics and the technology of high dielectric constant gate stacks, including high mobility substrates, high dielectric constant materials, processing, metals for gate electrodes, interfaces, physical, chemical, and electrical characterization, gate stack reliability, and DRAM and non-volatile memories.

Download or read book Advanced Gate Stack Source Drain and Channel Engineering for Si Based CMOS 6 New Materials Processes and Equipment written by E. P. Gusev and published by The Electrochemical Society. This book was released on 2010-04 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings describe processing, materials and equipment for CMOS front-end integration including gate stack, source/drain and channel engineering. Topics: strained Si/SiGe and Si/SiGe on insulator; high-mobility channels including III-V¿s, etc.; nanowires and carbon nanotubes; high-k dielectrics, metal and FUSI gate electrodes; doping/annealing for ultra-shallow junctions; low-resistivity contacts; advanced deposition (e.g. ALD, CVD, MBE), RTP, UV, plasma and laser-assisted processes.

Download or read book Physics and Technology of High k Gate Dielectrics 5 written by Samares Kar and published by The Electrochemical Society. This book was released on 2007 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue covers in detail all aspects of the physics and the technology of high dielectric constant gate stacks, including high mobility substrates, high dielectric constant materials, processing, metals for gate electrodes, interfaces, physical, chemical, and electrical characterization, gate stack reliability, and DRAM and non-volatile memories.

Download or read book Oxide Electronics written by Asim K. Ray and published by John Wiley & Sons. This book was released on 2021-04-22 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide Electronics Multiple disciplines converge in this insightful exploration of complex metal oxides and their functions and properties Oxide Electronics delivers a broad and comprehensive exploration of complex metal oxides designed to meet the multidisciplinary needs of electrical and electronic engineers, physicists, and material scientists. The distinguished author eschews complex mathematics whenever possible and focuses on the physical and functional properties of metal oxides in each chapter. Each of the sixteen chapters featured within the book begins with an abstract and an introduction to the topic, clear explanations are presented with graphical illustrations and relevant equations throughout the book. Numerous supporting references are included, and each chapter is self-contained, making them perfect for use both as a reference and as study material. Readers will learn how and why the field of oxide electronics is a key area of research and exploitation in materials science, electrical engineering, and semiconductor physics. The book encompasses every application area where the functional and electronic properties of various genres of oxides are exploited. Readers will also learn from topics like: Thorough discussions of High-k gate oxide for silicon heterostructure MOSFET devices and semiconductor-dielectric interfaces An exploration of printable high-mobility transparent amorphous oxide semiconductors Treatments of graphene oxide electronics, magnetic oxides, ferroelectric oxides, and materials for spin electronics Examinations of the calcium aluminate binary compound, perovoksites for photovoltaics, and oxide 2Degs Analyses of various applications for oxide electronics, including data storage, microprocessors, biomedical devices, LCDs, photovoltaic cells, TFTs, and sensors Suitable for researchers in semiconductor technology or working in materials science, electrical engineering, and physics, Oxide Electronics will also earn a place in the libraries of private industry researchers like device engineers working on electronic applications of oxide electronics. Engineers working on photovoltaics, sensors, or consumer electronics will also benefit from this book.

Download or read book Integrated Nanodevice and Nanosystem Fabrication written by Simon Deleonibus and published by CRC Press. This book was released on 2017-11-22 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its invention, the integrated circuit has necessitated new process modules and numerous architectural changes to improve application performances, power consumption, and cost reduction. Silicon CMOS is now well established to offer the integration of several tens of billions of devices on a chip or in a system. At present, there are important challenges in the introduction of heterogeneous co-integration of materials and devices with the silicon CMOS 2D- and 3D-based platforms. New fabrication techniques allowing strong energy and variability efficiency come in as possible players to improve the various figures of merit of fabrication technology. Integrated Nanodevice and Nanosystem Fabrication: Breakthroughs and Alternatives is the second volume in the Pan Stanford Series on Intelligent Nanosystems. The book contains 8 chapters and is divided into two parts, the first of which reports breakthrough materials and techniques such as single ion implantation in silicon and diamond, graphene and 2D materials, nanofabrication using scanning probe microscopes, while the second tackles the scaling and architectural aspects of silicon devices through HiK scaling for nanoCMOS, nanoscale epitaxial growth of group IV semiconductors, design for variability co-optimization in SOI FinFETs, and nanowires for CMOS and diversifications.

Download or read book Defects in Microelectronic Materials and Devices written by Daniel M. Fleetwood and published by CRC Press. This book was released on 2008-11-19 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncover the Defects that Compromise Performance and ReliabilityAs microelectronics features and devices become smaller and more complex, it is critical that engineers and technologists completely understand how components can be damaged during the increasingly complicated fabrication processes required to produce them.A comprehensive survey of defe

Download or read book Metrology and Diagnostic Techniques for Nanoelectronics written by Zhiyong Ma and published by CRC Press. This book was released on 2017-03-27 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoelectronics is changing the way the world communicates, and is transforming our daily lives. Continuing Moore’s law and miniaturization of low-power semiconductor chips with ever-increasing functionality have been relentlessly driving R&D of new devices, materials, and process capabilities to meet performance, power, and cost requirements. This book covers up-to-date advances in research and industry practices in nanometrology, critical for continuing technology scaling and product innovation. It holistically approaches the subject matter and addresses emerging and important topics in semiconductor R&D and manufacturing. It is a complete guide for metrology and diagnostic techniques essential for process technology, electronics packaging, and product development and debugging—a unique approach compared to other books. The authors are from academia, government labs, and industry and have vast experience and expertise in the topics presented. The book is intended for all those involved in IC manufacturing and nanoelectronics and for those studying nanoelectronics process and assembly technologies or working in device testing, characterization, and diagnostic techniques.

Download or read book Dielectric Films for Advanced Microelectronics written by Mikhail Baklanov and published by John Wiley & Sons. This book was released on 2007-04-04 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topic of thin films is an area of increasing importance in materials science, electrical engineering and applied solid state physics; with both research and industrial applications in microelectronics, computer manufacturing, and physical devices. Advanced, high-performance computers, high-definition TV, broadband imaging systems, flat-panel displays, robotic systems, and medical electronics and diagnostics are a few examples of the miniaturized device technologies that depend on the utilization of thin film materials. This book presents an in-depth overview of the novel developments made by the scientific leaders in the area of modern dielectric films for advanced microelectronic applications. It contains clear, concise explanations of material science of dielectric films and their problem for device operation, including high-k, low-k, medium-k dielectric films and also specific features and requirements for dielectric films used in the packaging technology. A broad range of related topics are covered, from physical principles to design, fabrication, characterization, and applications of novel dielectric films.