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Purely Electronic Mechanism Of Electrolyte Gating Of Indium Tin Oxide Thin Films
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Book Synopsis Purely Electronic Mechanism of Electrolyte Gating of Indium Tin Oxide Thin Films by :
Download or read book Purely Electronic Mechanism of Electrolyte Gating of Indium Tin Oxide Thin Films written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Epitaxial indium tin oxide films have been grown on both LaAlO3 and yttria-stabilized zirconia substrates using RF magnetron sputtering. Electrolyte gating causes a large change in the film resistance that occurs immediately after the gate voltage is applied, and shows no hysteresis during the charging/discharging processes. When two devices are patterned next to one another and the first one gated through an electrolyte, the second one shows no changes in conductance, in contrast to what happens in materials (like tungsten oxide) susceptible to ionic electromigration and intercalation. These findings indicate that electrolyte gating in indium tin oxide triggers a pure electronic process (electron depletion or accumulation, depending on the polarity of the gate voltage), with no electrochemical reactions involved. Electron accumulation occurs in a very thin layer near the film surface, which becomes highly conductive. These results contribute to our understanding of the electrolyte gating mechanism in complex oxides and may be relevant for applications of electric double layer transistor devices.
Book Synopsis Transparent Conducting Pure and Tin Doped Indium Oxide Films - Preparation and Characterization by : Dr. B. Radhakrishna
Download or read book Transparent Conducting Pure and Tin Doped Indium Oxide Films - Preparation and Characterization written by Dr. B. Radhakrishna and published by Lulu.com. This book was released on 2019-03-26 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Badeker in 1907 observed that some materials are optically transparent in the visible light and electrically conducting [1]. Because of the increasing interest in electrically and electronically active materials, the search for materials and the techniques for producing semi-transparent electrically conducting films have gained much importance. In an intrinsic stoichiometric material, it is not possible to have simultaneously high transparency (>80%%) in the visible region and high electrical conductivity (>103 Ω cm-1). A variety of metals in thin film form (
Book Synopsis In-plane Conductance of Thin Films as a Probe of Surface Chemical Environment by : Amy Lynn Swint
Download or read book In-plane Conductance of Thin Films as a Probe of Surface Chemical Environment written by Amy Lynn Swint and published by . This book was released on 2003 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrical, Optical and Structural Properties of Indium Tin Oxide Thin Films Deposited on Glass, Pet and Polycarbonate Substrates by Rf Sputtering by : Teck-Shiun Lim
Download or read book Electrical, Optical and Structural Properties of Indium Tin Oxide Thin Films Deposited on Glass, Pet and Polycarbonate Substrates by Rf Sputtering written by Teck-Shiun Lim and published by . This book was released on 199? with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CHARACTERIZATION OF CHARGE INJECTION PROCESSES OF THIN FILMS ON INDIUM TIN OXIDE ELECTRODES USING A NOVEL SPECTROELECTROCHEMICAL TECHNIQUE: POTENTIAL-MODULATED ATTENUATED TOTAL REFLECTANCE SPECTROSCOPY. by : Zeynep Araci
Download or read book CHARACTERIZATION OF CHARGE INJECTION PROCESSES OF THIN FILMS ON INDIUM TIN OXIDE ELECTRODES USING A NOVEL SPECTROELECTROCHEMICAL TECHNIQUE: POTENTIAL-MODULATED ATTENUATED TOTAL REFLECTANCE SPECTROSCOPY. written by Zeynep Araci and published by . This book was released on 2010 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding interfacial charge injection processes is one of the key factors needed for development of efficient organic electronic devices, such as biosensors and energy conversion systems, since these processes control the electrical characteristics of these devices. Spectroelectrochemical characterization of electron transfer processes occurring at the electrode - electroactive thin film interface has been evaluated to improve our understanding of charge transfer kinetics using a novel form of electroreflectance spectroscopy, potential-modulated attenuated total reflectance (PM-ATR), which makes it possible to sensitively monitor spectroscopic changes in thin films as a function of applied potential. PM-ATR was used to evaluate three different redox-active films deposited on indium tin oxide (ITO) electrodes to investigate: i) the orientation dependence of charge transfer rates of thin films of biomolecules, ii) surface treatment and modification effects on charge transfer kinetics of conducting polymers and, iii) estimation of rates of electron injection and conduction band edge of semiconductor nanocrystalline materials. First, Prussian blue film as a model system was used successfully to examine the PM-ATR technique for determination of the charge transfer rate constant between ITO and a molecular film. Second, an anisotropic and redox active protein film, cytochrome c, was used to probe charge transfer rates with respect to molecular orientation. The electron transfer rate measured using TM polarized light was four-fold greater than that measured using TE polarized light. These data are the first to correlate a distribution of molecular orientations with a distribution of electron transfer rates in a redox-active molecular film. Third, the effects of ITO surface treatment and modification on charge transfer kinetics on a conducting polymer, poly(3,4-ethylenedioxythiophene/)/poly(styrenesulfonate) (PEDOT/PSS), were studied. The apparent interfacial charge transfer rate constant for PEDOT/PSS on ITO has been reported for the first time which cannot be measured otherwise with conventional electrochemistry due to high non-Faradaic background of PEDOT/PSS films. Fourth, PM-ATR enabled characterization of reversible redox processes between submonolayer coverages of surface-tethered, CdSe nanocrystals and ITO for the first time. Optically determined onset potentials for electron injection were used for estimation for the conduction band and valance band energies (ECB and EVB, respectively).
Book Synopsis Preparation and Post-Annealing Effects on the Optical Properties of Indium Tin Oxide Thin Films by : Rongxin Wang
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
Book Synopsis Improved Charge Transfer by Thin Metal Oxide Films by : Irfan
Download or read book Improved Charge Transfer by Thin Metal Oxide Films written by Irfan and published by . This book was released on 2012 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The field of electronics has an immense impact on our day to day life. Efficient charge transfer at the semiconductor and electrode interface is one of the most crucial issues for the performance of any electronic device. A lot of effort has been spent to address this issue. A counter intuitive phenomenon of insertion of a thin metal oxide film at the semiconductor and electrode interface has gained momentum recently. In the current thesis, based on results of several experiments, I will propose a prominent mechanism of performance improvement with such insertions. I will also demonstrate the applicability of such metal oxide thin films in many other systems. First, I will introduce the scope of the thesis in detail. I will also introduce the background to understand the electronic structure of organic semiconductors, along with the interface formation at the semiconductor/metal interface. Then, I will discuss the measurement techniques. I will start the discussion on results with the insertion of a thin layer of MoOx (a transition metal oxide) between indium tin oxide (ITO) and two well studied organic semiconductors. I will also demonstrate that the optimum insertion layer thickness is just a few nanometers. I will illustrate the importance of high vacuum during the deposition of such insertion layers. I will also discuss the method to recover work function of air exposed MoOx ilms. I will further demonstrate that a thin layer of MoOx can be utilized to dope C60 strongly p-type. Then, I will discuss the application of MoOx insertion layer in CdTe based solar cells. I will further show the application of MoOx and organic double-inter-layer in organic devices. At the end, I will discuss an intense oxygen plasma treatment on ITO films and demonstrate a method to achieve high work function ITO films. The mechanism of high work function and application in devices will also be explained in detail. Finally, I will summarize the thesis"--Page ix-x.
Book Synopsis Synthesis of Indium Tin Oxide Thin Films by CVD and Sol-gel Processing by : Laurent-Sebastien Bernard
Download or read book Synthesis of Indium Tin Oxide Thin Films by CVD and Sol-gel Processing written by Laurent-Sebastien Bernard and published by . This book was released on 1994 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Inert Gas RF Plasma-treated Indium Tin Oxide Thin Films Deposited Via Pulsed DC Magnetron Sputtering by : Amber Nicole Reed
Download or read book Characterization of Inert Gas RF Plasma-treated Indium Tin Oxide Thin Films Deposited Via Pulsed DC Magnetron Sputtering written by Amber Nicole Reed and published by . This book was released on 2008 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polarons and Bipolarons in High-Tc Superconductors and Related Materials by : E. K. H. Salje
Download or read book Polarons and Bipolarons in High-Tc Superconductors and Related Materials written by E. K. H. Salje and published by Cambridge University Press. This book was released on 1995-09-07 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the polaron and bipolaron theory of high-temperature superconductivity.
Book Synopsis Graphene Field-Effect Transistors by : Omar Azzaroni
Download or read book Graphene Field-Effect Transistors written by Omar Azzaroni and published by John Wiley & Sons. This book was released on 2023-10-16 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene Field-Effect Transistors In-depth resource on making and using graphene field effect transistors for point-of-care diagnostic devices Graphene Field-Effect Transistors focuses on the design, fabrication, characterization, and applications of graphene field effect transistors, summarizing the state-of-the-art in the field and putting forward new ideas regarding future research directions and potential applications. After a review of the unique electronic properties of graphene and the production of graphene and graphene oxide, the main part of the book is devoted to the fabrication of graphene field effect transistors and their sensing applications. Graphene Field-Effect Transistors includes information on: Electronic properties of graphene, production of graphene oxide and reduced graphene oxide, and graphene functionalization Fundamentals and fabrication of graphene field effect transistors, and nanomaterial/graphene nanostructure-based field-effect transistors Graphene field-effect transistors integrated with microfluidic platforms and flexible graphene field-effect transistors Graphene field-effect transistors for diagnostics applications, and DNA biosensors and immunosensors based on graphene field-effect transistors Graphene field-effect transistors for targeting cancer molecules, brain activity recording, bacterial detection, and detection of smell and taste Providing both fundamentals of the technology and an in-depth overview of using graphene field effect transistors for fabricating bioelectronic devices that can be applied for point-of-care diagnostics, Graphene Field-Effect Transistors is an essential reference for materials scientists, engineering scientists, laboratory medics, and biotechnologists.
Book Synopsis Ceramic Abstracts by : American Ceramic Society
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1997 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Advanced Electronic and Photonic Materials and Devices, Ten-Volume Set by : Hari Singh Nalwa
Download or read book Handbook of Advanced Electronic and Photonic Materials and Devices, Ten-Volume Set written by Hari Singh Nalwa and published by Academic Press. This book was released on 2000-10-09 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 1: Semiconductors;Vol. 2: Semiconductors Devices;Vol. 3: High-Tc Superconductors and Organic Conductors; Vol. 4: Ferroelectrics and Dielectrics; Vol. 5: Chalcogenide Glasses and Sol-Gel Materials; Vol. 6 Nanostructured Materials; Vol. 7: Liquid Crystals, Display and Laser Materials; Vol. 8: Conducting Polymers; Vol. 9: Nonlinear Optical Materials; Volume 10: Light-Emitting Diodes, Lithium Batteries and Polymer Devices
Book Synopsis Transactions of the National Academy of Science and Technology by :
Download or read book Transactions of the National Academy of Science and Technology written by and published by . This book was released on 2001 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tin Oxide Materials by : Marcelo Ornaghi Orlandi
Download or read book Tin Oxide Materials written by Marcelo Ornaghi Orlandi and published by Elsevier. This book was released on 2019-10-05 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tin Oxide Materials: Synthesis, Properties, and Applications discusses the latest in metal oxides, an emerging area in electronic materials. As more is learned about this important materials system, more functionalities and applications have been revealed. This key reference on the topic covers important material that is ideal for materials scientists, materials engineers and materials chemists who have been introduced to metal oxides as a general category of materials, but want to take the next step and learn more about a specific material. Provides a complete resource on tin oxide materials systems, including in-depth discussions of properties, their synthesis, modelling methods, and applications Presents information on the well-investigated SnO2, but also includes discussions on its emerging stoichiometries, such as SnO and Sn3O4 Includes the most relevant applications in varistors, sensing devices, fuel cells, transistors, biological studies, and much more
Book Synopsis Electrical & Electronics Abstracts by :
Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 1860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroelectrochemistry by : Wolfgang Kaim
Download or read book Spectroelectrochemistry written by Wolfgang Kaim and published by Royal Society of Chemistry. This book was released on 2008 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guidebook illustrating the applications of spectroelectrochemistry to the understanding of redox reactions through identification of their intermediaries and products.
