Download or read book Preparation and Optical Properties of Crystals and Films of Vanadium Oxides written by John Chin Chiang Fan and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical properties of the Hafnium Doped Vanadium Oxide thin films prepared by RF reactive sputtering written by Hironaga Matsumoto and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preparation and Post Annealing Effects on the Optical Properties of Indium Tin Oxide Thin Films written by Rongxin Wang and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Preparation and Post-annealing Effects on the Optical Properties of Indium Tin Oxide Thin Films" by Rongxin, Wang, 王榮新, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled PREPARATION AND POST-ANNEALING EFFECTS ON THE OPTICAL PROPERTIES OF INDIUM TIN OXIDE THIN FILMS Submitted by WANG Rong Xin for the degree of Doctor of Philosophy at The University of Hong Kong in April 2005 Many opto-electronic devices, such as III-V compound devices, liquid crystal displays, solar cells, organic and inorganic light emitting devices, and ultraviolet photodetectors, demand transparent electrode materials simultaneously having high electrical conductance. To meet the requirements for particular applications, a great deal of basic research and studies have been carried out on the electrical and optical properties of these materials. As a most promising candidate for such materials, indium tin oxide (ITO) has attracted interest in recent years. Furthermore, ITO has many unique properties such as excellent adhesion on the substrate, thermal stability and ease of patterning. The deposition of high-quality ITO thin films is a key step for successful application of ITO thin films as transparent electrode materials. To obtain optimal electrical and optical properties of ITO films, the growth parameters and conditions must be determined. Moreover, the optical and electrical properties of ITO contact layers, which can either be on the top side or the bottom side of a device, are influenced by various post-deposition treatments. For the present work, ITO thin films were deposited on glass and quartz substrates using e-beam evaporation with different deposition rates. The influence of substrate material, deposition rate, deposition gas environment and post-deposition annealing on the optical properties of the films was investigated in detail. Atomic force microscopy, X-ray diffraction and X-ray photoemission spectroscopy was employed to obtain information on the chemical state and crystallization of the films. Analysis of these data suggests that the substrate material, deposition rate, deposition gas environment and post-deposition annealing conditions strongly affect the chemical composition and the microstructure of the ITO films and these in turn influence the optical properties of the film. Oxygen incorporation transfers the In O phase to the In O phase and removes metallic In to form both indium oxide 2 3-x 2 3 phases. Both of these reactions are beneficial for the optical transmittance of ITO thin films. Moreover, it was found that the incorporation and decomposition reactions of oxygen can be controlled so as to change the optical properties of the ITO thin films reversibly. DOI: 10.5353/th_b3154617 Subjects: Thin films - Optical properties Indium compounds Annealing of metals

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electronic Thermoelectric and Optical Properties of Vanadium Oxides written by Chiranjivi Lamsal and published by . This book was released on 2015 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Correlated electrons in vanadium oxides are responsible for their extreme sensitivity to external stimuli such as pressure, temperature or doping. As a result, several vanadium oxides undergo insulator-to-metal phase transition (IMT) accompanied by structural change. Unlike vanadium pentoxide (V3O3), vanadium dioxide (VO3) and vanadium sesquioxide (V3O3) show I MT in their bulk phases. In this study, we have performed one electron Kohn-Sham electronic band-structure calculations of VO3, V3O3 and V2O5 in both metallic and insulating phases, implementing a full ab-initio simulation package based on Density Functional Theory (DFT), Plane Waves and Pseudopotentials (PPs). Electronic band structures are found to be influenced by crystal structure, crystal field splitting and strong hybridization between O2p and V3d bands. "Intermediate bands", with narrow band widths, lying just below the higher conduction bands, are observed in V2O5 which play a critical role in optical and thermoelectric processes. Similar calculations are performed for both metallic and insulating phases of bulk VO2 and V2O3. Unlike in the metallic phase, bands corresponding to "valence electrons" considered in the PPs are found to be fully occupied in the insulating phases. Transport parameters such as Seebeck coefficient, electrical conductivity and thermal (electronic) conductivity are studied as a function of temperature at a fixed value of chemical potential close to the Fermi energy using Kohn-Sham band structure approach coupled with Boltzmann transport equations. Because of the layered structure and stability, only V2O5 shows significant thermoelectric properties. All the transport parameters have correctly depicted the highly anisotropic electrical conduction in V2O5. Maxima and crossovers are also seen in the temperature dependent variation of Seebeck coefficient in V2O5, which can be consequences of "specific details" of the band structure and anisotropic electron-phonon interactions. For understanding the influence of phase transition on transport properties, we have also studied transport parameters of VO2 for both metallic and insulating phases. The Seebeck coefficient, at experimental critical temperature of 340K, is found to change by 18.9 μV/K during IMT, which lies within 10% of the observed discontinuity of 17.3 μV/K. Numerical methods have been used to analyze the optical properties of bulk and thin films of VO2, V2O3, and V2O5, deposited on Al2O3 substrates, from infrared to vacuum ultraviolet range (up to 12 eV). The energies corresponding to the peaks in the reflectivity-energy (R-E) spectra are explained in terms of the Penn gap and the degree of anisotropy is found to be in the order of V2O3

Download or read book Handbook of Inorganic Electrochromic Materials written by C.G. Granqvist and published by Elsevier. This book was released on 1995-03-16 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochromic materials are able to change their optical properties in a persistent and reversible way under the action of a voltage pulse. This book explores electrochromism among the metal oxides, with detailed discussions of materials preparation (primarily by thin film technology), materials characterization by (electro)chemical and physical techniques, optical properties, electrochromic device design, and device performance. The vast quantity of information presented is structured in a systematic manner and the optical data is interpreted within a novel conceptual framework.The publication will serve as a comprehensive foundation and reference work for future studies within the rapidly expanding field of electrochromic materials and devices. These devices are of particular interest for information displays, variable-transmittance (smart) windows, variable-reflectance mirrors and variable-emittance surfaces.

Download or read book Preparation and Optical Properties of Thin Films of Cuprous Oxide written by Layman Austin Lott and published by . This book was released on 1961 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Exploring the Structural Electronic and Optical Properties of Cuprous Oxide Films and Single Crystals written by Alexander Gloystein and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Properties of Metal Oxide Nanostructures written by Vijay Kumar and published by Springer Nature. This book was released on 2023-10-25 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the optical properties of metal oxides at both the fundamental and applied level and their use in various applications. The book offers a basic understanding of the optical properties and related spectroscopic techniques essential for anyone interested in learning about metal oxide nanostructures. This is partly due to the fact that optical properties are closely associated with other properties and functionalities (e.g., electronic, magnetic, and thermal), which are of essential significance to many technological applications, such as optical data communications, imaging, lighting, and displays, life sciences, health care, security, and safety. The book also highlights the fundamentals and systematic developments in various optical techniques to achieve better characterization, cost-effective, user-friendly approaches, and most importantly, state-of-the-art developing methodologies for various scientific and technological applications. It provides an adequate understanding of the imposed limitations and highlights the prospects and challenges associated with optical analytical methods to achieve the desired performance in targeted applications.

Download or read book Handbook of Optical Properties written by Rolf E. Hummel and published by CRC Press. This book was released on 1995-02-24 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin Films for Optical Coating emphasizes the applications of thin films, deposition of thin films, and thin film characterization. Unlike monographs on this subject, this book presents the views of many expert authors. Individual chapters span a wide arc of topics within this field of study. The book offers an introduction to usual and unusual applications of optical thin films, treating in a more qualitative way general topics such as anticounterfeiting coatings, decorative coatings, light switches, contrast enhancement coatings, multiplexers, optical memories, and more. Contributors review thin film media for optical data storage, UV broadband and narrow-band filters, and optically active thin film coatings. Ion beam sputtering and magnetron sputtering deposition methods are described in detail. Characterization techniques are provided, including Raman spectroscopy and absorption measurements. The book also offers theories on light scattering of thin dielectric films and the electromagnetic properties of nanocermet thin films. This reference incorporates recent research by the individual authors with their views of current developments in their respective fields. Of particular interest to the reader will be an assessment of the historical developments of thin film physics written by one of the fathers of thin film technology, Professor M. Auwärter.

Download or read book Preparation and Study of Electro optical Properties of Oxide Films of Ag Cu and Their Alloys Using the Photovoltaic Effect written by Efstathios Tselepis and published by . This book was released on 1988 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Saving Coating Materials written by Goutam Kumar Dalapati and published by Elsevier. This book was released on 2020-05-14 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Saving Coating Materials: Design, Process, Implementation and Developments provides comprehensive information regarding recent materials advancements and design aspects and integration for infra-red radiation regulators, along with future developments of zero emission buildings. The key opportunities and challenges for the usage of existing heat regulation materials and their implementation for commercial aspects are explored. The fundamental interaction between electromagnetic waves and materials are discussed, along with materials synthesis, design and integration of coatings for smart window applications. This book presents recent developments of innovative technologies comprising energy saving materials and coatings which are key considerations for achieving vital energy saving milestones. - Provides knowledge-based information on the optical properties of materials and their utility for solar energy harvesting and energy saving applications - Discusses innovative coatings for smart windows applications, including the progressive development of radiative cooling and cool paint - Previews future developments for the synthesis, design and integration of heat regulative materials

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 Crystal Growth Bibliography written by and published by Springer Nature. This book was released on 1981 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography written by Pierre Villars and published by Walter de Gruyter. This book was released on 2012-12-21 with total page 1827 pages. Available in PDF, EPUB and Kindle. Book excerpt: By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.