Download or read book Synthesis and Optical Properties of Strongly scattered Zinc Oxide Powders written by Eric W. Seelig and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of monodisperse ZnO spheres makes it possible to generate self-assembled colloidal crystals. These crystals can be formed simply by drying a drop of reaction solution on a substrate at temperatures near 200°C, but more sophisticated techniques can yield higher quality crystals if the spheres are resuspended in a Mg(NO3)2/isopropanol solution.
Download or read book Synthesis of Zinc Oxide by Sol Gel Method for Photoelectrochemical Cells written by Siti Salwa Alias and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the study of synthesized ZnO powder using Zn(CH3COO)2∙2H2O precursor, methanol (as solvent), and sodium hydroxide (NaOH) to vary the pH. The successfully synthesized ZnO powder from the sol-gel centrifugation and sol-gel storage methods were characterized and investigated by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, UV–visible spectroscopy, and photoluminescence test to compare the properties of the nanoparticles. The best characteristic of the ZnO powder from both methods was observed when the powders were coated on an ITO glass to fabricate a PEC. The current density–voltage performances of both PECs were investigated under luminescent and dark conditions.
Download or read book Multifunctional Oxide Based Materials From Synthesis to Application written by Teofil Jesionowski and published by MDPI. This book was released on 2019-09-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with novel aspects and perspectives in metal oxide and hybrid material fabrication. The contributions are mainly focused on the search for a new group of advanced materials with designed physicochemical properties, especially an expanded porous structure and defined surface activity. The proposed technological procedures result in an enhanced activity of the synthesized hybrid materials, which is of great importance when considering their potential fields of application. The use of such materials in different technological disciplines, including aspects associated with environmental protection, allows for the verification of the proposed synthesis method. Thus, it can be stated that those aspects are of interdisciplinary character and may be located at the interface of three scientific disciplines—chemistry, materials science, and engineering—as well as environmental protection. Furthermore, the presented scientific scope is in some way an answer to the continuous demand for such types of materials and opens new perspectives for their practical use
Download or read book Synthesis Characterization Structural and Optical Properties of Zinc Oxide Nanostructures Embedded in Silicon Based Substrates written by Bimal Pandey and published by . This book was released on 2014 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microemulsion Synthesis and Nonlinear Optical Properties of Zinc Oxide Nanoparticles written by Yun Ling Teh and published by . This book was released on 1998 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zinc Oxide written by Claus F. Klingshirn and published by Springer Science & Business Media. This book was released on 2010-07-01 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a comprehensive review of the present state-of-the-art in ZnO R+D, including growth, doping, lattice dynamics, electric magnetic and optical properties. The emphasis is on the electric and optical properties, because this is the area where novel applications may be expected with highest promise. The book highlights not only the most recent results but gives both an overview of past research and of the present status -- not avoiding critical and controversial discussions of various aspects such as bank symmetries and laser processes. Intended to have long-lasting impact on ZnO R+D, this monograph addresses (post-)graduate students but also advanced scientists, who want to embark on ZnO research or are already involved, the present state of the art and assists them in avoiding duplication of old results (or mistakes).
Download or read book Zinc Oxide written by Carmen Galvan and published by . This book was released on 2020 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In Zinc Oxide: Production, Properties and Applications, the authors first provide a summary of the natural sources available for the synthesis of zinc oxide nanoparticles, enlisting some plant-mediated synthesized zinc oxide nanoparticles showing promising antimicrobial, antioxidant, cytotoxic and photocatalytic properties. Important technological opportunities and challenges emphasizing the electrical and optoelectronic features of elongated zinc oxide nanoparticle nanosystems are reviewed. The various nonlinear optical phenomenon observed in zinc oxide thin film, including nonlinear absorption, nonlinear refraction, nonlinear scattering and harmonic generations are introduced. Selected literature on the use of zinc oxide nanoparticles for the immobilization of enzymes is reviewed, as well as the use of zinc oxide nanoparticle/enzyme systems in the fabrication of biosensors. The authors explore transition metal doped zinc oxide nanoparticles for a wide range of catalytic organic reactions, further exploring their catalytic applications for organic transformations at mild reaction conditions. The basic concepts behind the development of nanostructured zinc oxide nanoparticles, including the solid state reaction, hydrothermal method, solvothermal method and co-precipitation method are discussed. Lastly, a facile, eco-friendly synthesis of zinc oxide nanoparticles using the peel extract of Musa paradisiaca L, Punica granatum L, and Citrus reticulata Blanco as bioreducing agent is reported"--
Download or read book Zinc Oxide Materials for Electronic and Optoelectronic Device Applications written by Cole W. Litton and published by John Wiley & Sons. This book was released on 2011-03-23 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc Oxide (ZnO) powder has been widely used as a white paint pigment and industrial processing chemical for nearly 150 years. However, following a rediscovery of ZnO and its potential applications in the 1950s, science and industry alike began to realize that ZnO had many interesting novel properties that were worthy of further investigation. ZnO is a leading candidate for the next generation of electronics, and its biocompatibility makes it viable for medical devices. This book covers recent advances including crystal growth, processing and doping and also discusses the problems and issues that seem to be impeding the commercialization of devices. Topics include: Energy band structure and spintronics Fundamental optical and electronic properties Electronic contacts of ZnO Growth of ZnO crystals and substrates Ultraviolet photodetectors ZnO quantum wells Zinc Oxide Materials for Electronic and Optoelectronic Device Applications is ideal for university, government, and industrial research and development laboratories, particularly those engaged in ZnO and related materials research.
Download or read book Zinc Oxide written by Hadis Morkoç and published by John Wiley & Sons. This book was released on 2008-12-03 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first systematic, authoritative and thorough treatment in one comprehensive volume presents the fundamentals and technologies of the topic, elucidating all aspects of ZnO materials and devices. Following an introduction, the authors look at the general properties of ZnO, as well as its growth, optical processes, doping and ZnO-based dilute magnetic semiconductors. Concluding sections treat bandgap engineering, processing and ZnO nanostructures and nanodevices. Of interest to device engineers, physicists, and semiconductor and solid state scientists in general.
Download or read book Zinc Oxide Nanostructures Synthesis and Characterization written by Sotirios Baskoutas and published by MDPI. This book was released on 2018-12-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Zinc Oxide Nanostructures: Synthesis and Characterization" that was published in Materials
Download or read book Nonlinear Optical Properties of Zinc Oxide written by Changcheng Zheng and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Synthesis Machanisms and Optical Properties of ZnO Nanomaterials Obtained by Supercritical Fluids Route written by Evgeniy Ilin and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is a well-known and intensively studied material for optoelectronic applications in the ultraviolet (UV) spectrum region due to its wide band gap energy - 3.34 eV. However, the UV applications based on nanostructured ZnO present a big challenge due to the small size of the nanostructures i.e. a large surface-to-volume ratio resulting the appearance of the visible emission originated from the surface defects. In the last decades, the progress concerning the fabrication of UV-emitting ZnO nanostructures was carried out through the high temperature gas phase based approach. However, the size and shape control of ZnO nanostructures obtained with this approach is still difficult. Taking into account the state of the art in the optics based on ZnO nanomaterials, this Ph.D. thesis demonstrates the development of new supercritical fluids based approach for the synthesis of ZnO nanostructures with UV-emitting only PL properties. First of all in this thesis, we have developed continuous supercritical set up from micro- up to millifluidic reactor dimension for the synthesis of a larger quantity of UV-emitting ZnO nanocrystals (a gram scale per day). The influence of reactor dimension associated with hydrodynamics on physico-chemical characteristics was investigated. ZnO nanocrystals formation mechanism was studied as a function of the residence time in our continuous supercritical fluids process for the understanding of the nucleation and growth of the nanocrystals. Moreover, ZnO nanocrystals formation mechanism determines UV-emitting properties of this material. The optical properties at room and low temperature were deeply investigated with comparing to the PL emission of several types of ZnO particles and single crystal for the understanding of the nature of UV emission.
Download or read book Zinc Oxide and Related Materials Volume 957 written by Jürgen H. Christen and published by . This book was released on 2007-04-05 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. The topics covered in this volume, first published in 2007, include devices, defects, spintronics and magnetism, growth, optical properties and nanostructures, and doping and processing TFTs.
Download or read book Synthesis Properties and Applications of Micro nano Zinc Oxide Spheres written by Xinghua Zhan and published by . This book was released on 2013 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semiconductor material of zinc oxide (ZnO) has been studied intensively for decades due to its numerous unique electrical and optical properties, such as wide bandgap, high exciton binding energy at room temperature, and high refractive index. These properties can lead ZnO material to the applications of electronics and optoelectronics. More importantly, the realization of various kinds of ZnO micro- or nano-structures, makes ZnO capable to improve the electrical and/or optical performances of the devices. Different micro- or nano-structured ZnO has attracted much attention from researchers worldwide in the recent years as this will bright the future of ZnO in the applications of light emitting diodes (LEDs) and solar cells. And thus, developing a simple, low-cost, and environmental friendly method to grow ZnO having desired micro- or nano-structures is of great importance in the research field of ZnO material, and this becomes a key issue when a large-scale production is required in the industry. Meanwhile, the parameter control during the synthesis procedure is essential to be modified and clarified. The main focus of this thesis is on developing a simple, inexpensive, and solution based thermal method to grow spherical shaped ZnO particles having uniformly distributed size. The growth parameters for controlling the size and shape, such as the hydrate, solvent, salt concentration, reaction temperature, reaction time, seed solution, and heating rate, are experimentally studied and clarified in this thesis. This method has the advantage of large-scale production and good reproductivity with low requirements in regard to the facilities and experimental conditions in industry. At the same time, the related growth mechanism of the submicron ZnO spheres is studied, derived, and theoretically analyzed in this thesis, based on the observation in the experiments. Another focus of this thesis is on the study of the surface morphologies and optical properties of the synthesized ZnO particles. The surface morphologies are analyzed by the techniques of field emission scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The optical properties of the synthesized ZnO particles are experimentally investigated by Raman spectroscopy and photoluminescence at room temperature. Furthermore, the related luminescence mechanism is theoretically studied, modelled, and presented in this thesis. In order to explore the applications of the synthesized ZnO spheres, the composite of ZnO/V2O5 (zinc oxide/vanadium pentoxide) is designed, fabricated, experimentally investigated, and theoretically analyzed. The experimental results indicate that this transition metal oxide mixture can be developed to create a group of new light emission materials with high efficiency. Moreover, a silicon-based ZnO light emission device is presented in this thesis, reporting that visible light emission is observed at room temperature from the ZnO material which deposited on the hot electron emitting substrate (HEES). Finally, some of the future works of this research are suggested.
Download or read book Responsive Materials and Methods written by Ashutosh Tiwari and published by John Wiley & Sons. This book was released on 2013-09-30 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of finely-tuned materials that adjust in a predictable manner by specific environment change is the recent arena of materials research. It is a newly emerging supra-disciplinary field with huge commercial potential. Stimuli-responsive materials answer by a considerable change in their properties to small changes in their environment. Responsive materials are becoming increasingly more prevalent as scientists learn about the chemistry and triggers that induce conformational changes in materials structures and devise ways to take advantage of and control them. Responsive Materials and Method offers state-of-the-art of the stimuli-responsive materials and their potential applications. This collection brings together novel methodologies and strategies adopted in the research and development of responsive materials and technology.
Download or read book Zinc Oxide Bulk Thin Films and Nanostructures written by Chennupati Jagadish and published by Elsevier. This book was released on 2011-10-10 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an in-depth exploration of the following topics, this book covers the broad uses of zinc oxide within the fields of materials science and engineering:- Recent advances in bulk , thin film and nanowire growth of ZnO (including MBE, MOCVD and PLD), - The characterization of the resulting material (including the related ternary systems ZgMgO and ZnCdO), - Improvements in device processing modules (including ion implantation for doping and isolation ,Ohmic and Schottky contacts , wet and dry etching), - The role of impurities and defects on materials properties - Applications of ZnO in UV light emitters/detectors, gas, biological and chemical-sensing, transparent electronics, spintronics and thin film
