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Author : 徐榮彰
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (711 download)
Download or read book The Study of Sol-gel Synthesized ZnO and IZO Thin Films and Its Applied in UV Photodetectors written by 徐榮彰 and published by . This book was released on 2009 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Siti Salwa Alias
Publisher : Springer Science & Business Media
ISBN 13 : 9814560774
Total Pages : 59 pages
Book Rating : 4.8/5 (145 download)
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.
Author : Farida Selim
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Synthesis of Conductive Sol-Gel ZnO Films and Development of ZnO Printed Electronics written by Farida Selim and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: ZnO thin films are synthesized and studied to understand the functionality of solution-processed semiconductor devices. A simple sol-gel technique is used to fabricate transparent conductive oxides (TCOs) and ultraviolet (UV) photodetectors from ZnO precursors via spin coating, inkjet printing (IJP), and aerosol jet printing (AJP). A variety of flexible and transparent substrates was selected based on the deposition and sintering conditions and the device application. Doping of ZnO films with Al3+, In3+, and Ga3+ was introduced in precursor solutions before deposition processes. Post-deposition processing was carried out in air, H2, and Zn environments to optimize thin film properties. Optical, structural, and electronic data analyses reveal the significant effects that deposition method, substrates, dopants, and processing conditions have on the optical transmission, crystallinity, grain size, and electrical conductivity.
Author : Guadalupe Valverde Aguilar
Publisher : BoD – Books on Demand
ISBN 13 : 1789853338
Total Pages : 108 pages
Book Rating : 4.7/5 (898 download)
Download or read book Sol-Gel Method written by Guadalupe Valverde Aguilar and published by BoD – Books on Demand. This book was released on 2019-02-13 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sol-gel method is a powerful route of synthesis used worldwide. It produces bulk, nano- and mesostructured sol-gel materials, which can encapsulate metallic and magnetic nanoparticles, non-linear azochromophores, perovskites, organic dyes, biological molecules, etc.. This can have interesting applications for catalysis, photocatalysis; drug delivery for treatment of neurodegenerative diseases such as cancer, Parkinson's and Azheimer's. In this book, valuable contributions related to novel materials synthesized by the sol-gel route are provided. The effect of the sol-gel method to synthesize these materials with potential properties is described, and how the variation of the parameters during the synthesis influences their design and allows to adjust their properties according to the desired application is discussed.
Author : David Winarski
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (929 download)
Download or read book SYNTHESIS AND CHARACTERIZATION OF TRANSPARENT CONDUCTIVE ZINC OXIDE THIN FILMS BY SOL-GEL SPIN COATING METHOD written by David Winarski and published by . This book was released on 2015 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide has been given much attention recently as it is promising for various semiconductor device applications. ZnO has a direct band gap of 3.3 eV, high exciton binding energy of 60 meV and can exist in various bulk powder and thin film forms for different applications. ZnO is naturally n-type with various structural defects, which sparks further investigation into the material properties. Although there are many potential applications for this ZnO, an overall lack of understand and control of intrinsic defects has proven difficult to obtain consistent, repeatable results. This work studies both synthesis and characterization of zinc oxide in an effort to produce high quality transparent conductive oxides. The sol-gel spin coating method was used to obtain highly transparent ZnO thin films with high UV absorbance. This research develops a new more consistent method for synthesis of these thin films, providing insight for maintaining quality control for each step in the procedure. A sol-gel spin coating technique is optimized, yielding highly transparent polycrystalline ZnO thin films with tunable electrical properties. Annealing treatment in hydrogen and zinc atmospheres is researched in an effort to increase electrical conductivity and better understand intrinsic properties of the material. These treatment have shown significant effects on the properties of ZnO. Characterization of doped and undoped ZnO synthesized by the sol-gel spin coating method was carried out using scanning electron microscopy, UV-Visible range absorbance, X-ray diffraction, and the Hall Effect. Treatment in hydrogen shows an overall decrease in the number of crystal phases and visible absorbance while zinc seems to have the opposite effect. The Hall Effect has shown that both annealing environments increase the n-type conductivity, yielding a ZnO thin film with a carrier concentration as high as 3.001 × 1021 cm-3.
Author : Michel Andre Aegerter
Publisher : Springer Science & Business Media
ISBN 13 : 0387889531
Total Pages : 474 pages
Book Rating : 4.3/5 (878 download)
Download or read book Sol-Gel Technologies for Glass Producers and Users written by Michel Andre Aegerter and published by Springer Science & Business Media. This book was released on 2013-03-19 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-Gel Techniques for Glass Producers and Users provides technological information, descriptions and characterizations of prototypes, or products already on the market, and illustrates advantages and disadvantages of the sol-gel process in comparison to other methods. The first chapter entitled "Wet Chemical Technology" gives a summary of the basic principles of the sol-gel chemistry. The most promising applications are related to coatings. Chapter 2 describes the various "Wet Chemical Coating Technologies" from glass cleaning to many deposition and post-coating treatment techniques. These include patterning of coatings through direct or indirect techniques which have became very important and for which the sol-gel processing is particularly well adapted. Chapter 3 entitled "Bulk Glass Technologies" reports on the preparation of special glasses for different applications. Chapter 4 entitled "Coatings and Materials Properties" describes the properties of the different coatings and the sol-gel materials, fibers and powders. The chapter also includes a section dedicated to the characterization techniques especially applied to sol-gel coatings and products.
Author : Tessy Maria Lopez
Publisher : Springer Science & Business Media
ISBN 13 : 146150449X
Total Pages : 456 pages
Book Rating : 4.4/5 (615 download)
Download or read book Emerging Fields in Sol-Gel Science and Technology written by Tessy Maria Lopez and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging Fields in Sol-gel Science and Technology contains selected papers from the symposium on "Sol-Gel and Vitreous Materials and Applications" held during the International Materials Research Congress in Cancún, México in August 2002. One hundred and twenty researchers representing 10 countries attended this symposium. Some of the subjects covered in this symposium include 1.) synthesis of new materials endowed with outstanding and non-conventional optical, magnetic, electrical, thermal, catalytic, and mechanical properties; 2.) study of the sorption properties of model porous materials in order to test the validity of previous and recent theories; 3.) theoretical studies related to density functional theory, fractal and scaling law approaches, 4.) synthesis of biomaterials for use in medicine and pollution control; 5.) application of sol-gel colloids in the fine-chemistry industry in products such as fragrances and pharmaceuticals; 6.) development of special vitreous materials; 7.) implementation of inorganic thin films, and 8.) synthesis of materials for energy saving.
Author : Gaurav Sharma
Publisher : Materials Research Forum LLC
ISBN 13 : 1644902389
Total Pages : 333 pages
Book Rating : 4.6/5 (449 download)
Download or read book ZnO and Their Hybrid Nano-Structures written by Gaurav Sharma and published by Materials Research Forum LLC. This book was released on 2023-06-05 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: ZnO and its hybrid nanostructures have unique optical, physical and chemical properties. The book covers recent trends in processing techniques and applications. Topics include solar cells, photo-voltaic devices, fuel cells, uv filters, lasers, light-emitting diodes, photo-detectors, spin-tronic devices, magnetic semiconductors, nano-generators, piezotronics, photo-catalytic applications against harmful organic pollutants like dyes, heavy metals, antibiotics, and sensors such as bio sensors, chemical sensors, gas sensors. Keywords: ZnO, Nano ZnO, Point Defects, Magnetic Semiconductors, Hybrid Nanostructures, Cell Applications, Nanoadsorbant for Heavy Metal Removals, Diagnostics, ZnO Nano-Carriers, ZnO Thin Films Fabrication.
Author : Sumio Sakka
Publisher : Springer Science & Business Media
ISBN 13 : 9781402079665
Total Pages : 716 pages
Book Rating : 4.0/5 (796 download)
Download or read book Handbook of sol-gel science and technology. 1. Sol-gel processing written by Sumio Sakka and published by Springer Science & Business Media. This book was released on 2005 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since Dr. Disiich of Germany prepared a glass lens by the sol-gel method around 1970, sol-gel science and technology has continued to develop. Since then this field has seen remarkable technical developments as well as a broadening of the applications of sol-gel science and technology. There is a growing need for a comprehensive reference that treats both the fundamentals and the applications, and this is the aim of "Handbook of Sol-Gel Science and Technology."The primary purpose of sol-gel science and technology is to produce materials, active and non-active including optical, electronic, chemical, sensor, bio- and structural materials. This means that sol-gel science and technology is related to all kinds of manufacturing industries. Thus Volume 1, "Sol-Gel Processing," is devoted to general aspects of processing. Newly developed materials such as organic-inorganic hybrids, photonic crystals, ferroelectric coatings, photocatalysts will be covered. Topics in this volume include: Volume 2, "Characterization of Sol-Gel Materials and Products, "highlights the important fact that useful materials are only produced when characterization is tied to processing. Furthermore, characterization is essential to the understanding of nanostructured materials, and sol-gel technology is a most important technology in this new field. Since nanomaterials display their functional property based on their nano- and micro-structure, "characterization" is very important. Topics found in Volume 2 include: Sol-gel technology is a versatile technology, making it possible to produce a wide variety of materials and to provide existing substances with novel properties. This technology was applied to producingnovel materials, for example organic-inorganic hybrids, which are quite difficult to make by other fabricating techniques, and it was also applied to producing materials based on high temperature superconducting oxides. "Applications of Sol-Gel Technology," (Volume 3), will cover applications such as:
Author : Lee Huat Kelly Koh
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (795 download)
Download or read book Novel Synthesis and Fabrication of ZnO Thin Films Via an Anhydrous Sol-gel Route written by Lee Huat Kelly Koh and published by . This book was released on 2008 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the aim to synthesise nano-sized zinc oxide particles in the form of thin films by using a novel anhydrous sol-gel technique was proposed, developed and demonstrated. The sol-gel was prepared using anhydrous zinc acetate [Zn(C2H3O2)2], monoethanolamine [H2NC2H4OH ] and isopropanol. The zinc oxide thin films were fabricated on soda-lime and fused silica substrates from both single- and multi- step spin-coating depositions. A range of widely reported zinc acetate concentrations, annealing temperatures and spin-coating speeds was chosen to characterise and study the various effects that these parameters have on the crystallographical, morphological, optical, electronic and electrical properties. The mean crystallite sizes and other structural properties (such as micro-strain and degree of crystallinity) were estimated using x-ray diffraction analysis. In combination with scanning electron microscopy, the increase in particle size was observed to be non-linear, changing from that of individual growth to that of particle conglomeration at higher precursor concentration and annealing temperature. Strong crystalline orientation along the (002) c-axis crystalline plane (with intensity ratio _ (002) value up to 0.95) was exhibited for films fabricated from low precursor concentrations, multi-layered and furnace pre-heated films. Optical transmittance and electronic bandgap was measured and calculated using UV-visible spectroscopy. Thin films with high transparency (> 98 % (T) after substrate subtraction) were achieved for films prepared from low precursor concentrations, while absorption wavelength and optical bandgap energy were consistent and in good agreement with recognised values of zinc oxide. Reproducibility and reliability tests carried out on the films show high morphological consistency and stability against temperature fluctuation, moisture and electrochemical effects. Surface morphologically, the films were dense. The electrical resistivity of the (single- and multi- layer) films, before and after forming gas treatment was also measured. The minimum resistivity value of all the single-layer films was calculated to be 9.58 x 102 _cm, and the electrical resistivity showed an overall mprovement (up to one order of magnitude). On contrary, the multi-layered films, which are more resistive, worsened in resistivity after forming gas treatment.
Author : Basim Abdullah AL-Farsi
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (12 download)
Download or read book Synthesis and Characterization of Sol-gel Dip-coated Al:ZnO Thin Films written by Basim Abdullah AL-Farsi and published by . This book was released on 2017 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Siti Salwa Alias
Publisher :
ISBN 13 : 9789814560788
Total Pages : 64 pages
Book Rating : 4.5/5 (67 download)
Download or read book Synthesis of Zinc Oxide by Sol-Gel Method for Photoelectrochemical Cells written by Siti Salwa Alias and published by . This book was released on 2013-11-30 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9789535132462
Total Pages : pages
Book Rating : 4.1/5 (324 download)
Download or read book Recent Applications in Sol-Gel Synthesis written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Qazi Muhammad Humayun
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (1 download)
Download or read book Synthesis and Characterization of ZnO Nanostructures for Ultravoilet (UV) Light Sensing Application written by Qazi Muhammad Humayun and published by . This book was released on 2014 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of research is to deposit ZnO thin film and ZnO nanorods by sol-gel method at selective area of microgap electrodes spacing and characterization for ultraviolet (UV) sensing application.
Author : Jan Mrazek
Publisher :
ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (8 download)
Download or read book Sol-gel Synthesis of Ternary ZnxTiyOz Nanostructures for Applications in Solar Cell Technologies and Photonics written by Jan Mrazek and published by . This book was released on 2011 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The presented study deals with the sol-gel synthesis of nanocrystalline ternary phases of the general formula ZnxTiyOz, their characterization and potential application in photonics. Achieved results brings new fundamental knowledge about the processes leading to the formation of ZnxTiyOz nanocrystals from amorphous xerogels and gives novel information about structural and opto-electrical properties of prepared materials. Two sol-gel approaches based on the cluster process and direct heteronucleation were employed to prepare initial sol. Sols were optionally doped by Eu3+ ions to evaluate the effects of rare earth element to crystallization properties of formed compounds. In the first part of our study crystallization properties and structural evolution of thermally treated xerogels were analyzed. As a result a versatile method allowing the preparation of inverse spinel Zn2TiO4, cubic defect spinel ZnTiO3 and rhombohedral ZnTiO3 with tailored nanocrystal sizes was established. In the second part of the study, approaches elaborated in the first part were successfully exploited for the preparations of thin films with define nanocrystalline structure and selected composition.. Refractive indexes, dispersion curves and band gap energies of particular structures were determined. In the third part of our study the zinc oxide nanoparticles prepared by the solgel process can be successfully employed as a part of host matrixes for rare earth element allowing the preparation of active optical fibers with parameters close to optical fibers prepared by the standard or modified solution doping method.
Author : Lisa C. Klein
Publisher : William Andrew Publishing
ISBN 13 : 9780815511540
Total Pages : 407 pages
Book Rating : 4.5/5 (115 download)
Download or read book Sol-Gel Technology for Thin Films, Fibers, Preforms, Electronics, and Specialty Shapes written by Lisa C. Klein and published by William Andrew Publishing. This book was released on 1988-01-01 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers principles, developments, and applications of sol-gel technology for thin films, fibers, preforms, electronics, and specialty shapes.
Author : Klaus Ellmer
Publisher : Springer Science & Business Media
ISBN 13 : 3540736123
Total Pages : 453 pages
Book Rating : 4.5/5 (47 download)
Download or read book Transparent Conductive Zinc Oxide written by Klaus Ellmer and published by Springer Science & Business Media. This book was released on 2007-12-29 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) belongs to the class of transparent conducting oxides that can be used as transparent electrodes in electronic devices or heated windows. In this book the material properties of, the deposition technologies for, and applications of zinc oxide in thin film solar cells are described in a comprehensive manner. Structural, morphological, optical and electronic properties of ZnO are treated in this review.
