Download or read book GROWTH AND FUNCTIONALITIES OF VANADATE THIN FILMS written by Haitian Zhang and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal oxides have attracted tremendous research interest due to their fertile functional properties, including ferroelectricity, magnetism, high temperature superconductivity and metal to insulator transition (MIT). Over recent decades, one of the research focuses has been utilizing these functional features in device applications, which requires a deeper understanding of the material science and also advances in thin film deposition in order to tailor these properties. The binary vanadium dioxide has drawn much attention due to its orders of magnitude change in resistivity during the MIT near room temperature, opening up the possibilities to use this material as next generation transistors, memory devices and radio frequency switches in communication applications. However, to bridge the gap between the frontier of fundamental research in VO2 films and their realization in commercial products, wafer scale growth of the oxide thin films with electronic grade is necessary. This task requires precise control over the valence state of normally multivalent transition metal cations, while the device performance will be largely derogated if the valence state is not well controlled. To deposit the VO2 with precise valence state control on wafer scale, a combinatorial approach was used to establish a valence state gradient of vanadium cation, from which the optimal condition for stoichiometric VO2 was extracted. Under the optimal growth condition, a high quality 30-nm thick VO2 film was grown on 3 inch sapphire wafer, showing the highest MIT resistivity ratio for ultrathin films on wafer scale, which is relevant for modern device applications.Besides the growth of high quality MIT thin films on wafer scale, a novel strategy to optically write and erase complex circuitry into VO2 thin films was also developed. Weve successfully demonstrated the optically induced MIT in VO2 which is persistent after the light source is turned off. We use this method to optically imprint local conductive areas into an otherwise insulating VO2 film. In contrast to conventional thin film patterning techniques that require chemical etching of patterns defined through lithography steps, the optical imprint is performed by irradiating single crystalline VO2 thin films with focused ultraviolet light in a nitrogen atmosphere. A conductive pattern is sketched into the resistive VO2 matrix, resulting in a close to 4 orders of magnitude increase in electrical conductivity at room temperature. Significantly, the inscribed pattern, which is permanent, can be completely erased by a few minutes thermal annealing process at moderately elevated temperature. This development can potentially find its application in reconfigurable optical elements. It can also be harnessed as rewritable bottom electrode material for back-gating structures by inscribing complex contacting schemes using UV radiation. Beyond the binary vanadium oxides, Mott insulators such as LaVO3 have recently been suggested as promising solar cell materials with suitable band gap, high absorption coefficient, as well as the potential to beat the Shockley-Queisser limit owing to their unique strong electron-electron correlation effect that is not present in conventional semiconductors. However, the quality of strongly correlated oxides has been far inferior compared to conventional semiconductors. The high defect concentration of oxide thin films impedes the realization of Mott solar cells with competitive performance due to the lack of stoichiometry control. By taking advantage of the unique self-regulated growth mechanism available in hybrid molecular beam epitaxy, strongly correlated LaVO3 films were grown which revealed a record-low defect concentration. The optical and electrical properties of these films were studied as a function of stoichiometry and a more than two orders of magnitude improvement in defect-related properties compared to results reported in literature was demonstrated, showing that Mott insulators can indeed be synthesized with high perfection using hybrid molecular beam epitaxy.
Download or read book Science And Technology Of Thin Films written by Francesco Cino Matacotta and published by World Scientific. This book was released on 1995-10-31 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together detailed discussions by leading experts on the various innovative aspects of thin films growth, deposition and characterization techniques, and new thin film materials and devices. It addresses through the different viewpoints of the contributors, the major problem of thin films science - the relation between the energy of the condensing species and the resulting properties of the films. Some of the issues considered include energetic condensation, bombardment stabilization, pulsed electron beam ablation, orientation and self-organization of organic, ferroelectric and nanoparticle thin films. Several chapters focus on applications such as the recent developments in organic optoelectronics, large area electronic technology and superconducting thin film devices.
Download or read book The Effect of Substrate Bias on the Growth of Vanadium Oxide Thin Films written by Scott M. Kozlowski and published by . This book was released on 2014 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Symposium on Molecular Functions of Electroactive Thin Films written by Noboru Oyama and published by The Electrochemical Society. This book was released on 1999 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Characterization of Ultra Thin Vanadium Oxide Films written by Fangfang Song and published by . This book was released on 2014 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thin Film Growth and the Optimization Process as Applied to Li V O written by Daniel J. Scanderbeg and published by . This book was released on 2001 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Development of Nanostructured Thin Films written by Antonella Macagnano and published by MDPI. This book was released on 2020-05-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their unique size-dependent physicochemical properties, nanostructured thin films are used in a wide range of applications from smart coating and drug delivery to electrocatalysis and highly-sensitive sensors. Depending on the targeted application and the deposition technique, these materials have been designed and developed by tuning their atomic-molecular 2D- and/or 3D-aggregation, thickness, crystallinity, and porosity, having effects on their optical, mechanical, catalytic, and conductive properties. Several open questions remain about the impact of nanomaterial production and use on environment and health. Many efforts are currently being made not only to prevent nanotechnologies and nanomaterials from contributing to environmental pollution but also to design nanomaterials to support, control, and protect the environment. This Special Issue aims to cover the recent advances in designing nanostructured films focusing on environmental issues related to their fabrication processes (e.g., low power and low cost technologies, the use of environmentally friendly solvents), their precursors (e.g., waste-recycled, bio-based, biodegradable, and natural materials), their applications (e.g., controlled release of chemicals, mimicking of natural processes, and clean energy conversion and storage), and their use in monitoring environment pollution (e.g., sensors optically- or electrically-sensitive to pollutants)
Download or read book Recent Advances in Thin Films written by Sushil Kumar and published by Springer Nature. This book was released on 2020-08-27 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the expert contributions from the invited speakers at the 17th International Conference on Thin Films (ICTF 2017), held at CSIR-NPL, New Delhi, India. Thin film research has become increasingly important over the last few decades owing to the applications in latest technologies and devices. The book focuses on current advances in thin film deposition processes and characterization including thin film measurements. The chapters cover different types of thin films like metal, dielectric, organic and inorganic, and their diverse applications across transistors, resistors, capacitors, memory elements for computers, optical filters and mirrors, sensors, solar cells, LED's, transparent conducting coatings for liquid crystal display, printed circuit board, and automobile headlamp covers. This book can be a useful reference for students, researchers as well as industry professionals by providing an up-to-date knowledge on thin films and coatings.
Download or read book Thin Film Phenomena written by Kasturi L. Chopra and published by . This book was released on 1979 with total page 872 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 Structure of Thin Films During Dynamic Growth written by Brian Patrick Hinz and published by . This book was released on 2000 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Oxide Ultrathin Films written by Gianfranco Pacchioni and published by John Wiley & Sons. This book was released on 2012-09-19 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wealth of information in one accessible book. Written by international experts from multidisciplinary fields, this in-depth exploration of oxide ultrathin films covers all aspects of these systems, starting with preparation and characterization, and going on to geometrical and electronic structure, as well as applications in current and future systems and devices. From the Contents: Synthesis and Preparation of Oxide Ultrathin Films Characterization Tools of Oxide Ultrathin Films Ordered Oxide Nanostructures on Metal Surfaces Unusual Properties of Oxides and Other Insulators in the Ultrathin Limit Silica and High-K Dielectrics Thin Films in Microelectronics Oxide Passive Films and Corrosion Protection Oxide Films as Catalytic Materials and as Models of Real Catalysts Oxide Films in Spintronics Oxide Ultrathin Films in Solid Oxide Fuel Cells Transparent Conducting and Chromogenic Oxide Films as Solar Energy Materials Oxide Ultrathin Films in Sensor Applications Ferroelectricity in Ultrathin Film Capacitors Titania Thin Films in Biocompatible Materials and Medical Implants Oxide Nanowires for New Chemical Sensor Devices
Download or read book Physics of Thin Films written by Maurice H. Francombe and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Structure of Complex Oxide Thin Films written by Vedran Vonk and published by . This book was released on 2006 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grain Growth and Texture Evolution in Thin Films written by Roland Carel and published by . This book was released on 1995 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
