Download or read book Synthesis and Thermal Stability of Gold Zinc Oxide Nano Comosite Thin Films for Electrical Contacts written by and published by . This book was released on 2014 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thin Film Electronics with Novel Materials written by Yiyang Gong and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel materials, including zinc oxide (ZnO) and 2D transition metal dichalcogenides (TMDs), have been investigated in this dissertation for the realization of high-performance large-area integrated circuits. These novel materials may provide differential advantages over the established large-area thin film technology based on silicon, which has been extensively employed in applications such as large-area flat panel displays, high-speed active matrix thin film circuits, flexible and wearable electronics, etc. The dissertation begins with the discussion of high-performance plasma-enhanced atomic layer deposition (PEALD) of ZnO thin films and ZnO thin film transistors (TFTs) with a field effect mobility of ~ 10 to 20 cm2/Vs, which have been demonstrated. Offset-drain ZnO TFTs, which are able to withstand or switch voltage beyond 80 V, have also been demonstrated. These results shed light on the realization of large-area active-matrix circuits beyond the capabilities of the current display industry where high circuit speed or high operation voltage is required. To further improve the performance of ZnO-based electronics, many related materials, including doped ZnO, zinc nitride, and aluminum nitride, have been investigated. Doped ZnO has been proposed as the carrier injection layer that can improve the conductivity of metal-semiconductor contact in ZnO TFTs. Aluminum-doped ZnO thin films have been deposited using triisobutyl aluminum (TIBA) as the dopant precursor instead of trimethyl aluminum (TMA) in order to improve the uniformity of dopant distribution because TIBA has much lower vapor pressure than TMA. AZO thin films with resistivity ~ 10-2 cm have been achieved by PEALD. Besides, aluminum nitride and zinc nitride thin films have also been studied using PEALD. In addition to the showerhead PEALD system, a novel inductively coupled plasma ALD system has been designed and set up that provides RF power up to 500 W in order to generate a highly reactive nitrogen plasma source and enable the deposition of high-quality metal nitride at relatively low temperature. These metal nitride thin films may provide additional building blocks to enhance the speed and thermal stability of ZnO-based thin film devices and circuits.Owing to their excellent electrical and mechanical properties, 2D-TMD thin films have been studied for flexible electronics applications. High quality MoS2 and WS2 thin films have been achieved via mechanical exfoliation and chemical vapor deposition. To fabricate MoS2- and WS2-based TFTs, a 5-step device fabrication process has been developed, which is compatible to both the conventional rigid substrate and the ~ 4.8 nm thick solution-cast polyimide (PI) flexible substrate. The MoS2 and WS2 TFTs fabricated on PI substrate exhibit a field effect mobility of between 1 to 20 cm2/Vs, which is similar to that of those fabricated on rigid silicon substrate. More importantly, extraordinary mechanical strength and stability have been demonstrated for MoS2 and WS2 TFTs fabricated on PI substrate. A reasonably small degradation in device performance has been observed in these flexible 2D-TMD TFTs under static bending to the radius of ~ 2mm and after cyclic bending up to 100,000 cycles. Finally, attempts to create integratable 2D-TMD circuits have been demonstrated. To realize large-area 2D-TMD based circuits, growth of wafer-scale continuous WSe2 thin films has been demonstrated using metal organic chemical vapor deposition (MOCVD). Deposition has been achieved at as low as 400 C, which allows deposition on glass and polymeric substrate and enables the transfer-free fabrication of WSe2 TFTs and circuits on arbitrary platforms. Patterning and post-growth thickness modulation of continuous WSe2 thin film have been demonstrated using CF4 plasma and O2 plasma, whereby high-speed etching and nanometer-scale film thinning can be realized. With the capability of depositing and patterning wafer-scale WSe2 thin films, an array of p-channel WSe2 TFTs have been fabricated with a field effect mobility of ~0.01 cm2/Vs and an on-off ratio greater than 104.
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 Metal Oxide Nanocomposite Thin Films for Optoelectronic Device Applications written by Rayees Ahmad Zargar and published by John Wiley & Sons. This book was released on 2023-11-07 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: METAL OXIDE NANOCOMPOSITE THIN FILMS FOR OPTOELECTRONIC DEVICE APPLICATIONS The book provides insight into the fundamental aspects, latest research, synthesis route development, preparation, and future applications of metal oxide nanocomposite thin films. The fabrication of thin film-based materials is important to the future production of safe, efficient, and affordable energy as the devices convert sunlight into electricity. Thin film devices allow excellent interface engineering for high-performance printable solar cells as their structures are highly reliable and stand-alone systems can provide the required megawatts. They have been used as power sources in solar home systems, remote buildings, water pumping, megawatt-scale power plants, satellites, communications, and space vehicles. Metal Oxide Nanocomposite Thin Films for Optoelectronic Device Applications covers the basics of advanced nanometal oxide-based materials, their synthesis, characterization, and applications, and all the updated information on optoelectronics. Topics discussed include the implications of metal oxide thin films, which are critical for device fabrications. It provides updated information on the economic aspect and toxicity, with great focus paid to display applications, and covers some core areas of nanotechnology, which are particularly concerned with optoelectronics and the available technologies. The book concludes with insights into the role of nanotechnology and the physics behind photovoltaics. Audience The book will be an important volume for electronics and electrical engineers, nanotechnologists, materials scientists, inorganic chemists in academic research, and those in industries, exploring the applications of nanoparticles in semiconductors, power electronics, and more.
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
Download or read book Chemically Deposited Nanocrystalline Metal Oxide Thin Films written by Fabian I. Ezema and published by Springer Nature. This book was released on 2021-06-26 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book guides beginners in the areas of thin film preparation, characterization, and device making, while providing insight into these areas for experts. As chemically deposited metal oxides are currently gaining attention in development of devices such as solar cells, supercapacitors, batteries, sensors, etc., the book illustrates how the chemical deposition route is emerging as a relatively inexpensive, simple, and convenient solution for large area deposition. The advancement in the nanostructured materials for the development of devices is fully discussed.
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.
Download or read book Synthesis Electrical Properties and Optical Characterization of Hybrid Zinc Oxide polymer Thin Films and Nanostructures written by Masashi Matsumura and published by . This book was released on 2007 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Thermal Stability of Physical Vapor Deposited Oxide hardened Nanocrystalline Gold Thin Films written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe a correlation between electrical resistivity and grain size for PVD synthesized polycrystalline oxide-hardened metal-matrix thin films in oxide-dilute (
Download or read book Nanostructured Zinc Oxide written by Kamlendra Awasthi and published by Elsevier. This book was released on 2021-08-12 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured Zinc Oxide covers the various routes for the synthesis of different types of nanostructured zinc oxide including; 1D (nanorods, nanowires etc.), 2D and 3D (nanosheets, nanoparticles, nanospheres etc.). This comprehensive overview provides readers with a clear understanding of the various parameters controlling morphologies. The book also reviews key properties of ZnO including optical, electronic, thermal, piezoelectric and surface properties and techniques in order to tailor key properties. There is a large emphasis in the book on ZnO nanostructures and their role in optoelectronics. ZnO is very interesting and widely investigated material for a number of applications. This book presents up-to-date information about the ZnO nanostructures-based applications such as gas sensing, pH sensing, photocatalysis, antibacterial activity, drug delivery, and electrodes for optoelectronics. Reviews methods to synthesize, tailor, and characterize 1D, 2D, and 3D zinc oxide nanostructured materials Discusses key properties of zinc oxide nanostructured materials including optical, electronic, thermal, piezoelectric, and surface properties Addresses most relevant zinc oxide applications in optoelectronics such as light-emitting diodes, solar cells, and sensors
Download or read book Applications of Graphene and Graphene Oxide based Nanomaterials written by Sekhar Ray and published by William Andrew. This book was released on 2015-02-12 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanomaterials have a unique place in Nanoscience owing to their exceptional electrical, thermal, chemical and mechanical properties and have found application in areas as diverse as composite materials, energy storage and conversion, sensors, drug delivery, field emission devices and nano-scale electronic components. Conjugated carbon nanomaterial covers the areas of carbon nanotubes, fullerenes and graphene. Graphene is the newest of the carbon nanomaterials and promises to be a very active field. Already since its isolation in 2004 it has grabbed the attention of the chemistry, materials and physics communities. It promises to rival carbon nanotubes in terms of properties and potential applications with the number of publications rising from ca. 130 in 2005 to ca. 2,800 in 2010. In this short book Sekhar Ray gives an overview on graphene and graphene-oxide with a strong focus on applications. Structured in three chapters, one on graphene, one on graphene-oxide and one on graphene based nanoparticles his resource describes in each chapter the preparation (including synthesis and functionalization) and material properties before detailing a whole range of applications. Ray finishes each chapter with information on remaining challenges and perspectives. - Written by an expert in the field who, during his last 17 years of research, has published more than 80 peer reviewed articles in recognized international journals - Gives full-chapter overviews on Graphene, Graphene-Oxide, and Graphene based nanoparticles - Focusses on applications
Download or read book Sciences of Carbon Materials written by Harry Marsh and published by . This book was released on 2000 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sciences which are used to understand the properties and applications of carbons and graphites need to be described, comprehensively, in book format, at an up-to-date and introductory level. This book introduces the reader, comprehensively, to the sciences of structure of carbons, applications of carbon in nuclear energy, the chemistry of pitch carbonization, the spinnig of carbon fibres, carbon gasification reactions and oxidation protection, mechacnical properties, porosity and adsorption in carbons and coals, with chapters describing coal carbonization, coal liquefaction and the petrography of coal. The book serves both as a textbook and as a reference book and as a text for courses within educational institutions, worldwide.
Download or read book Atomic Layer Deposition of Nanostructured Materials written by Nicola Pinna and published by John Wiley & Sons. This book was released on 2012-09-19 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic layer deposition, formerly called atomic layer epitaxy, was developed in the 1970s to meet the needs of producing high-quality, large-area fl at displays with perfect structure and process controllability. Nowadays, creating nanomaterials and producing nanostructures with structural perfection is an important goal for many applications in nanotechnology. As ALD is one of the important techniques which offers good control over the surface structures created, it is more and more in the focus of scientists. The book is structured in such a way to fi t both the need of the expert reader (due to the systematic presentation of the results at the forefront of the technique and their applications) and the ones of students and newcomers to the fi eld (through the first part detailing the basic aspects of the technique). This book is a must-have for all Materials Scientists, Surface Chemists, Physicists, and Scientists in the Semiconductor Industry.
Download or read book Metal Oxide Nanostructures written by Daniela Nunes and published by Elsevier. This book was released on 2018-11-01 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxide Nanostructures: Synthesis, Properties and Applications covers the theoretical and experimental aspects related to design, synthesis, fabrication, processing, structural, morphological, optical and electronic properties on the topic. In addition, it reviews surface functionalization and hybrid materials, focusing on the advantages of these oxide nanostructures. The book concludes with the current and future prospective applications of these materials. Users will find a complete overview of all the important topics related to oxide nanostructures, from the physics of the materials, to its application. - Delves into hybrid structured metal oxides and their promising use in the next generation of electronic devices - Includes fundamental chapters on synthesis design and the properties of metal oxide nanostructures - Provides an in-depth overview of novel applications, including chromogenics, electronics and energy
Download or read book Ceramic Abstracts written by and published by . This book was released on 1998 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Performance Polymers Their Origin and Development written by Gerald S. Kirshenbaum and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to Johann Wolfgang Von Goethe's (1740-1832) Mineralogy and Geology, "The history of science is science." A sesquicentennial later, one may state that the history of high performance polymers is the science of these important engineering polymers. Many of the inventors of these superior materials of construction have stood on the thresholds of the new and have recounted their experiences (trials, tribulations and satisfactions) in the symposium and in their chapters in this book. Those who have not accepted the historical approach in the past, should now recognize the value of the historical viewpoint for studying new developments, such as general purpose polymers and, to a greater degree, the high performance polymers. To put polymer science into its proper perspective, its worth recalling that historically, the ages of civilization have been named according to the materials that dominated that period. First there was the Stone Age eventually followed by the Tin, Bronze, Iron and Steel Ages. Today many historians consider us living in the Age of Synthetics: Polymers, Fibers, Plastics, Elastomers, Films, Coatings, Adhesives, etc. It is also interesting to note that in the early 1980's, Lord Todd, then President of the Royal Society of Chemistry was asked what has been chemistry's biggest contribution to society. He felt that despite all the marvelous medical advances, chemistry's biggest contribution was the development of polymeri zation. Man's knowledge of polymer science is so new that Professor Herman F.
