Download or read book Resistive Switching Effects of Vanadium Pentoxide Thin Film written by Zhenni Wan and published by . This book was released on 2018 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Ph.D. work, the resistive switching effects of vanadium pentoxide (V2O5) thin films are extensively explored and investigated. Contrary to conventional Flash memory devices where the information is stored by the electrons in the floating gate (FG), emerging memory devices employs the resistive switching effects of metal-insulator-metal (MIM) devices in which the information is stored in the location of atoms, which determines the high or low resistance state. Both reversible and irreversible resistive switching are discovered for the first time in V2O5 based MIM devices and the switching effects are studied as a function of metal contacts and environment, which play an important role in determining the device characteristics. Two conductor materials, chromium and indium tin oxide (ITO), are mainly investigated and the mechanisms for both irreversible and reversible switching are addressed. The dependence of switching effects on testing environment is enabled by building a vacuum test chamber. The devices are tested in a variety of gases environment and the role of intercalated H2O molecules in enabling the resistive switching is established. Resistance change is attributed to reduction of valence states of vanadium at electrode/V2O5 interface resulting from the electrochemical reactions when a voltage bias is applied. Reversibility of the switching is determined by whether the electrode material has the capability of temporarily storing oxygen ions. V2O5 xerogel film synthesized by sol-gel process experiences drastic atomic structural change during post annealing process, resulting in significant impact on resistive switching characteristics. X-ray diffraction analysis reveals that -phase V2O5 forms at bottom V2O5/ITO interface while -phase V2O5 forms at top V2O5/ITO interface. The presence of intercalated H2O molecules is essential for the reversible switching to occur. Ab initio calculations prove that the enlarged interlayer spacing in V2O5 xerogel significantly reduces the formation energies of oxygen vacancies, thus enabling the creation of mobile oxygen ions. In order to make the synthesis of V¬2O5 thin film more compatible with modern IC fabrication processes, thermal evaporation is employed for V2O5 deposition. Reversible bipolar switching is preserved and the stability of I-V characteristics over annealing temperature has been improved. DFT calculations are performed to simulate the amorphous V2O5 structure generated by melt-quench process using ab initio molecular dynamics technique. Formation energies of oxygen vacancy is also reduced in amorphous V2O5. Degradation of V2O5 film due to spontaneous reduction of vanadium oxide with presence of intercalated water molecules has been suppressed.
Download or read book Oxide Electronics written by Asim K. Ray and published by John Wiley & Sons. This book was released on 2021-04-12 with total page 628 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 Resistive Switching Oxide Materials Mechanisms Devices and Operations written by Jennifer Rupp and published by Springer Nature. This book was released on 2021-10-15 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a broad examination of redox-based resistive switching memories (ReRAM), a promising technology for novel types of nanoelectronic devices, according to the International Technology Roadmap for Semiconductors, and the materials and physical processes used in these ionic transport-based switching devices. It covers defect kinetic models for switching, ReRAM deposition/fabrication methods, tuning thin film microstructures, and material/device characterization and modeling. A slate of world-renowned authors address the influence of type of ionic carriers, their mobility, the role of the local and chemical composition and environment, and facilitate readers’ understanding of the effects of composition and structure at different length scales (e.g., crystalline vs amorphous phases, impact of extended defects such as dislocations and grain boundaries). ReRAMs show outstanding potential for scaling down to the atomic level, fast operation in the nanosecond range, low power consumption, and non-volatile storage. The book is ideal for materials scientists and engineers concerned with novel types of nanoelectronic devices such as memories, memristors, and switches for logic and neuromorphic computing circuits beyond the von Neumann concept.
Download or read book Electrical Switching Effects in Vanadium oxide Complexes written by Ruey Jang Yu and published by . This book was released on 1972 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emerging Nanoelectronic Devices written by An Chen and published by John Wiley & Sons. This book was released on 2015-01-27 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging Nanoelectronic Devices focuses on the future direction of semiconductor and emerging nanoscale device technology. As the dimensional scaling of CMOS approaches its limits, alternate information processing devices and microarchitectures are being explored to sustain increasing functionality at decreasing cost into the indefinite future. This is driving new paradigms of information processing enabled by innovative new devices, circuits, and architectures, necessary to support an increasingly interconnected world through a rapidly evolving internet. This original title provides a fresh perspective on emerging research devices in 26 up to date chapters written by the leading researchers in their respective areas. It supplements and extends the work performed by the Emerging Research Devices working group of the International Technology Roadmap for Semiconductors (ITRS). Key features: • Serves as an authoritative tutorial on innovative devices and architectures that populate the dynamic world of “Beyond CMOS” technologies. • Provides a realistic assessment of the strengths, weaknesses and key unknowns associated with each technology. • Suggests guidelines for the directions of future development of each technology. • Emphasizes physical concepts over mathematical development. • Provides an essential resource for students, researchers and practicing engineers.
Download or read book Thin Film Metal Oxides written by Shriram Ramanathan and published by Springer Science & Business Media. This book was released on 2009-12-03 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin Film Metal-Oxides provides a representative account of the fundamental structure-property relations in oxide thin films. Functional properties of thin film oxides are discussed in the context of applications in emerging electronics and renewable energy technologies. Readers will find a detailed description of deposition and characterization of metal oxide thin films, theoretical treatment of select properties and their functional performance in solid state devices, from leading researchers. Scientists and engineers involved with oxide semiconductors, electronic materials and alternative energy will find Thin Film Metal-Oxides a useful reference.
Download or read book Multilayer Thin Film Oxides for Resistive Switching written by Zheng Jie Tan and published by . This book was released on 2019 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resistive switching devices are hotly being pursued for use as the fundamental units in next-generation hardware deep-learning or neuromorphic systems. However, these devices are still tricky both to fabricate and to operate with consistency. We present strategies which guarantees that switching devices are functional post-fabrication, and with switching cycles that are consistent both from cycle-to-cycle and device-to-device. The resistance of all observed high and low resistance states (HRS/LRS) spanned just 0.23 and 0.19 decades on the logarithm scale across all devices, with both states spanning 0.05 within single devices and all SET transitions falling within a 0.3V span in our multilayer FIB-processed device. DFT simulations suggest that Au atoms from the top metal electrode implanted deeper in the device by FIB would serve as bridging atoms for oxygen vacancies filament by promoting the formation of these vacancies. In addition, multilayer thin oxide films reduce the stochasticity of filament formation and further improves the switching consistency. This strategy for high consistency resistive switching devices was subsequently exploited for a few purposes. Firstly, multi-bit switching was demonstrated to yield approximately 7 distinguishable states with a single blind set, i.e, without having to program current compliances or use iterative schemes. Secondly, further insights into the SET and RESET mechanisms using pulsed measurements could be obtained since switching stochasticity no longer obscures subtle trends in experimental data. The implications of this study goes beyond the demonstration of a single high consistency device. Future understandings in resistive switching devices shall be achieved more easily since causality between processing parameters and device behaviors can now be quickly established under the significant reduction in switching stochasticity. The new degrees of freedom introduced here in designing resistive switching devices will also hasten the search for an optimal device, bringing forward the realization of large scale resistive RAM arrays for machine learning or hardware neuromorphic computing applications towards a nearer future.
Download or read book Convergence of More Moore More than Moore and Beyond Moore written by Simon Deleonibus and published by CRC Press. This book was released on 2021-02-16 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The era of Sustainable and Energy Efficient Nanoelectronics and Nanosystems has come. The research and development on Scalable and 3D integrated Diversified functions together with new computing architectures is in full swing. Besides data processing, data storage, new sensing modes and communication capabilities need the revision of process architecture to enable the Heterogeneous co integration of add-on devices with CMOS: the new defined functions and paradigms open the way to Augmented Nanosystems. The choices for future breakthroughs will request the study of new devices, circuits and computing architectures and to take new unexplored paths including as well new materials and integration schmes. This book reviews in two sections, including seven chapters, essential modules to build Diversified Nanosystems based on Nanoelectronics and finally how they pave the way to the definition of Nanofunctions for Augmented Nanosystems.
Download or read book Advances in Ferroelectrics written by Aimé Peláiz-Barranco and published by BoD – Books on Demand. This book was released on 2012-11-19 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferroelectricity is one of the most studied phenomena in the scientific community due the importance of ferroelectric materials in a wide range of applications including high dielectric constant capacitors, pyroelectric devices, transducers for medical diagnostic, piezoelectric sonars, electrooptic light valves, electromechanical transducers and ferroelectric random access memories. Actually the ferroelectricity at nanoscale receives a great attention to the development of new technologies. The demand for ferroelectric systems with specific applications enforced the in-depth research in addition to the improvement of processing and characterization techniques. This book contains twenty two chapters and offers an up-to-date view of recent research into ferroelectricity. The chapters cover various formulations, their forms (bulk, thin films, ferroelectric liquid crystals), fabrication, properties, theoretical topics and ferroelectricity at nanoscale.
Download or read book Nanostructured Thin Films written by Maria Benelmekki and published by Elsevier. This book was released on 2019-08-25 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured Thin Films: Fundamentals and Applications presents an overview of the synthesis and characterization of thin films and their nanocomposites. Both vapor phase and liquid phase approaches are discussed, along with the methods that are sufficiently attractive for large-scale production. Examples of applications in clean energy, sensors, biomedicine, anticorrosion and surface modification are also included. As the applications of thin films in nanomedicine, cell phones, solar cell-powered devices, and in the protection of structural materials continues to grow, this book presents an important research reference for anyone seeking an informed overview on their structure and applications. Shows how thin films are being used to create more efficient devices in the fields of medicine and energy harvesting Discusses how to alter the design of nanostructured thin films by vapor phase and liquid phase methods Explores how modifying the structure of thin films for specific applications enhances their performance
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hard X ray Photoelectron Spectroscopy HAXPES written by Joseph Woicik and published by Springer. This book was released on 2015-12-26 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first complete and up-to-date summary of the state of the art in HAXPES and motivates readers to harness its powerful capabilities in their own research. The chapters are written by experts. They include historical work, modern instrumentation, theory and applications. This book spans from physics to chemistry and materials science and engineering. In consideration of the rapid development of the technique, several chapters include highlights illustrating future opportunities as well.
Download or read book Modern Technologies for Creating the Thin film Systems and Coatings written by Nikolay Nikitenkov and published by BoD – Books on Demand. This book was released on 2017-03-08 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of the thin film and coating technologies (TFCT) made possible the technological revolution in electronics and through it the revolution in IT and communications in the end of the twentieth century. Now, TFCT penetrated in many sectors of human life and industry: biology and medicine; nuclear, fusion, and hydrogen energy; protection against corrosion and hydrogen embrittlement; jet engine; space materials science; and many others. Currently, TFCT along with nanotechnologies is the most promising for the development of almost all industries. The 20 chapters of this book present the achievements of thin-film technology in many areas mentioned above but more than any other in medicine and biology and energy saving and energy efficiency.
Download or read book Conductance Changes of Vanadium Pentoxide Films in Reducing Atmospheres microform written by Oliver Schilling and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1993 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vanadium Dioxide Based Thermochromic Smart Windows written by Yi Long and published by CRC Press. This book was released on 2021-05-27 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The usage of building energy accounts for 30–40% of total energy consumption in developed countries, exceeding the amount for industry or transportation. Around 50% energy for building services is contributed by heating, ventilation, and air-conditioning (HVAC) systems. More importantly, both building and HVAC energy consumptions are predicted to increase in the next two decades. Windows are considered as the least energy-efficient components of buildings. Therefore, smart windows are becoming increasingly important as they are capable of reducing HVAC energy usage by tuning the transmitted sunlight in a smart and favoured way: blocking solar irradiation on hot days, while letting it pass through on cold days. Compared with other type of smart windows, thermochromic windows have the unique advantages of cost-effectiveness, rational stimulus, and passive response. This book covers fabrication of vanadium dioxide–based smart windows, discusses various strategies to enhance their performance, and shares perspectives from the top scientists in this particular field.
Download or read book Digest of Literature on Dielectrics written by and published by National Academies. This book was released on 1978 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
