Download or read book Nanocrystalline Zinc Oxide Thin Films for Solar Cell written by Akbar I. Inamdar and published by LAP Lambert Academic Publishing. This book was released on 2010-12 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide has attracted considerable attention due to its good optical, electrical, and piezoelectric properties and its potential applications in diverse areas. The novel functions of ZnO nanostructures arrays have been revealed successfully in the solar cells, gas sensors, piezoelectric, photodetectcors, LED, field emitters and so on. Films with well-aligned ZnO nanorods or nanowires may exhibit much larger surface areas than ZnO films prepared from randomly oriented nanoparticles. A plethora of physical and chemical methods have been used for the synthesis of ZnO nanostructures including physical and chemical techniques. Electrodeposition is of particular interest due to low cost, environmental friendly, and feasibility of room temperature growth. The central idea of this work is to test the applicability of simple and inexpensive electrodeposition technique as an update on previously studied methods for the synthesis of nanocrystalline ZnO thin films for solar cell. In this direction the attempts were made to fabricate zinc oxide nanocrystalline thin films by varying various process parameters and by using novel approaches, as well.

Download or read book Zinc Oxide Nanocrystalline Thin Films written by Rajendra C. Pawar and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is a iconic semiconductor oxide due to its wide direct band gap of 3.3 eV and large exciton binding energy of 60 meV at room temperature, high electron mobility (155 cm2.V-1.S-1), ZnO is recognized as a promising optoelectronic material in the blue-ultraviolet (UV) region and an excellent candidate for a dye-sensitized oxide semiconductor solar cell and field emitter. By controlling the reaction conditions during heterogeneous deposition of ZnO from aqueous solutions, tunable nanostructures have been readily fabricated. The potential application of nanomaterials depends on the shape of nanostructure, and controlled morphology can modulate the properties of nanomaterials. Hierarchical ZnO nanostructures reported here might provide a good candidate for solar cells, gas sensor and field emission applications. In the book we have reported synthesis of 0D, 1D, 2D, 3D and multidimensional ZnO nanostructures like nanoparticles, nanorods, nanoneedles, nanotowers, nanoflowers, nanosyringes, bottle brush, cake and cactus-like by aqueous chemical route at relatively low temperature and cost. The synthesized nanostructures have been used for dye and quantum dot sensitized sola

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 Studies on Pure and Molybdenum Doped Nanocrystalline Zinc Oxide Films written by Subba Reddy Rajam Reddy and published by LAP Lambert Academic Publishing. This book was released on 2015-12-08 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscale ZnO have been recently investigated for surface acoustic wave devices, transparent conducting coatings for thin-film solar cell applications, gas sensors, ultraviolet photodetectors and potential applications in the realization of nanoscale devices. The promising approach to prepare device quality pure and molybdenum doped nanocrystalline zinc oxide films for optoelectronic devices was discussed clearly in this book.

Download or read book Zinc Oxide Based Nano Materials and Devices written by , Prof. Dr. Ahmed Nahhas and published by BoD – Books on Demand. This book was released on 2019-10-09 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a review of recent advances in ZnO-based nanomaterials and devices. ZnO as a nanomaterial has gained substantial interest in the research area of wide bandgap semiconductors and is considered to be one of the major candidates for electronic and photonic applications. ZnO has distinguished and interesting electrical and optical properties and is considered to be a potential material in optoelectronic applications such as solar cells, surface acoustic wave devices, and UV emitters. ZnO's unique properties have attracted several researchers to study its electrical and optical properties. As a nanostructured material, ZnO exhibits many advantages for nanodevices. Moreover, it has the ability to absorb the UV radiation.

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 A Novel Approach to the Deposition of ZnO Nanostructures for Use in Solar Cells written by Alexander Michael Lockett and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: IIn a world where natural resources are not abundant and our dependence for them is ever growing, greatest interest has always been shown to find new technologies which can sustain our needs without the use of non-renewable resources. One of the most promising areas is that of photovoltaic devices - solar cells. Zinc Oxide is a II-VI group semiconductor with a wide, direct band gap (3.37 eV) and a large exciton binding energy (60 meV). Nanocrystalline ZnO materials have been widely studied for high-technology applications such as photovoltaic devices, light-emitting diodes, photodetectors and gas sensors. The electrical and optical properties of nanocrystalline ZnO make it a viable alternative to TiO2 in Grätzel type photovoltaic devices. Chemical bath deposition - CBD, is a solution analogue of chemical vapour deposition (CVD), which utilises controlled chemical reaction in a solution (usually aqueous) to effect the deposition of a thin film by precipitation. Liquid-Liquid Interface deposition - LIF occurs at the region in which two immiscible liquids come into contact. In many ways, the LIF is a unique environment because of the discontinuity in physical properties, these properties provide a facile environment for growing materials at interface. In a typical water-toluene interfacial system, metal precursor dissolved in toluene is held in contact with an aqueous layer containing a reducing or oxidizing agent. The reaction proceeds at the interface of the liquids and results in deposits suspended in the interfacial region. In both instances the processes is simple, convenient and inexpensive route to semiconducting thin films and nanocrystals. Both don't require harsh conditions and can be deposited at low temperatures, on a wide array of substrates as well as the ability to use commonly available, cheap precursors. Selectivity over physical and chemical properties easily tunable through control of reaction parameters. All these factors twinned with overall low productions cost mean both are environmentally "green". The influence template seeding layers and polymers have on the growth of ZnO crystallites by chemical bath deposition has been studied. The methods by which the SLs are deposited, the crystallite size and also the thickness have a significant effect on the morphology, density as well as the critical dimensions of the ZnO nanostructures formed. Physical deposition methods have been used to obtain highly ordered, dense nanorod arrays with both narrow and broad size distributions. Chemicals methods using spin coated nanoparticles have produced rods with plus 1 m lengths, with the uncommon orientation along (1010) with growth along the a- axis. The reduction of thickness of the sputtered seeding layers also resulted in overlayers changing from dense nanorod arrays to 3D clusters. Depositions involving polymers yield crystallite with high surface area, high energy (0001) facets. The size of the crystallites can be tuned by the variation of polymer functionality, molecular weight and concentration. In combining both SL and polymers, highly density nanoplatelets arrays with extremely high surface area of (0001) facets are available, There combination also gives rise to unusual phase selective growth and facilitates crystalline growth using polymers which were unsuccessful previously. Interfacial growth of crystalline ZnO has also been investigated using several metal precursors. Using highly basic conditions 3D nanorods clusters where achieved in cases involving dithiocarbamate and ketoacidoximate precursors, however systems using basic conditions and thiobiuret precursors gave rise to a unique nanotulip morphology. The influences of reaction temperature, concentration and deposition time have been investigated. The possibility of polymer-mediated deposition of materials at the interface has been studied. The use of polyethyleneimine in place of NaOH gave rise to globular structures comprised of agglomerated nanocrystals. The nature and characteristics of the thin films, overlayers and nanocrystals obtained by both CBD and LIF were studied using powder X-ray diffraction (p-XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDAX) and UV/Visible spectroscopy.

Download or read book ZnO Based Thin Films Nano Wires and Nano Belts for Photonic and Electronic Devices and Sensors written by Fan Ren and published by The Electrochemical Society. This book was released on 2008-10 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers included in this issue of ECS Transactions were originally presented in the symposium ¿ZnO Based Thin Films, Nano-Wires, and Nano-Belts for Photonic and Electronic Devices and Sensors¿, during the PRiME 2008 meeting, held in Honolulu, Hawaii, from October 12 to 17, 2008.

Download or read book Nanostructured Zinc Oxide written by Kamlendra Awasthi and published by Elsevier. This book was released on 2021-08-10 with total page 781 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 Recent Applications in Sol Gel Synthesis written by Usha Chandra and published by BoD – Books on Demand. This book was released on 2017-07-05 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Versatility, extended compositional ranges, better homogeneity, lesser energy consumption, and requirement of nonexpensive equipments have boosted the use of sol-gel process on top of the popularity in the synthesis of nanosystems. The sol-gel technique has not only revolutionized oxide ceramics industry and/or material science but has also extended widely into multidimensional applications. The book Recent Applications in Sol-Gel Synthesis comprises 14 chapters that deal mainly with the application-oriented aspects of the technique. Sol-gel prepared metal oxide (MO) nanostructures like nanospheres, nanorods, nanoflakes, nanotubes, and nanoribbons have been employed in biomedical applications involving drug deliveries, mimicking of natural bone, and antimicrobial activities. The possibility of controlling grain size in aerogel and preparation of ultrahigh-temperature ceramic (UHTC)-based materials, fluorescent glasses, ultraviolet photosensors, and photocatalysts have been discussed in detail by the experts in the field. The usefulness of sol-gel materials as active GRIN, as textile finisher, and as leather modifier with water-repellent and oil-resistive properties would be an incentive for researchers keen to pursue the field.

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 Semiconductor Nanocrystals and Metal Nanoparticles written by Tupei Chen and published by CRC Press. This book was released on 2016-10-14 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanocrystals and metal nanoparticles are the building blocks of the next generation of electronic, optoelectronic, and photonic devices. Covering this rapidly developing and interdisciplinary field, the book examines in detail the physical properties and device applications of semiconductor nanocrystals and metal nanoparticles. It begins with a review of the synthesis and characterization of various semiconductor nanocrystals and metal nanoparticles and goes on to discuss in detail their optical, light emission, and electrical properties. It then illustrates some exciting applications of nanoelectronic devices (memristors and single-electron devices) and optoelectronic devices (UV detectors, quantum dot lasers, and solar cells), as well as other applications (gas sensors and metallic nanopastes for power electronics packaging). Focuses on a new class of materials that exhibit fascinating physical properties and have many exciting device applications. Presents an overview of synthesis strategies and characterization techniques for various semiconductor nanocrystal and metal nanoparticles. Examines in detail the optical/optoelectronic properties, light emission properties, and electrical properties of semiconductor nanocrystals and metal nanoparticles. Reviews applications in nanoelectronic devices, optoelectronic devices, and photonic devices.

Download or read book Nanocrystalline Materials written by Sie-Chin Tjong and published by Newnes. This book was released on 2013-09-02 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Nanocrystalline Materials provides updated information on the development and experimental work on the synthesis, properties, and applications of nanocrystalline materials. Nanocrystalline materials with new functionalities show great promise for use in industrial applications — such as reinforcing fillers in novel polymer composites — and substantial progress has been made in the past decade in their synthesis and processing. This book focuses primarily on 1D semiconducting oxides and carbon nanotubes, 2D graphene sheets and 0D nanoparticles (metals and inorganic semiconductors). These materials are synthesized under different compositions, shapes and structures, exhibiting different chemical, physical and mechanical properties from their bulk counterparts. This second edition presents new topics relevant to the fast-paced development of nanoscience and nanotechnology, including the synthesis and application of nanomaterials for drug delivery, energy, printed flash memory, and luminescent materials. With contributions from leading experts, this book describes the fundamental theories and concepts that illustrate the complexity of developing novel nanocrystalline materials, and reviews current knowledge in the synthesis, microstructural characterization, physical and mechanical behavior, and application of nanomaterials. Investigates the synthesis, characterization, and properties of a large variety of nanocrystalline materials, and their applications in industry Keeps the prominent challenges in nanomaterials fabrication at the forefront while offering the most up-to-date scientific findings Written by experts in nanomaterials with academic backgrounds in chemistry, physics, and materials engineering

Download or read book ZnO Thin Films written by Paolo Mele and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is an n-type semiconductor with versatile applications such as optical devices in ultraviolet region, piezoelectric transducers, transparent electrode for solar cells and gas sensors. This book "ZnO Thin Films: Properties, Performance and Applications" gives a deep insight in the intriguing science of zinc oxide thin films. It is devoted to cover the most recent advances and reviews the state of the art of ZnO thin films applications involving energy harvesting, microelectronics, magnetic devices, photocatalysis, photovoltaics, optics, thermoelectricity, piezoelectricity, electrochemistry, temperature sensing. It serves as a fundamental information source on the techniques and methodologies involved in zinc oxide thin films growth, characterization, post-deposition plasma treatments and device processing. This book will be invaluable to the experts to consolidate their knowledge and provide insight and inspiration to beginners wishing to learn about zinc oxide thin films.

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.

Download or read book Sol Gel Science written by C. Jeffrey Brinker and published by Academic Press. This book was released on 2013-10-22 with total page 925 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing presents the physical and chemical principles of the sol-gel process. The book emphasizes the science behind sol-gel processing with a chapter devoted to applications. The first chapter introduces basic terminology, provides a brief historical sketch, and identifies some excellent texts for background reading. Chapters 2 and 3 discuss the mechanisms of hydrolysis and condensation for nonsilicate and silicate systems. Chapter 4 deals with stabilization and gelation of sols. Chapter 5 reviews theories of gelation and examines the predicted and observed changes in the properties of a sol in the vicinity of the gel point. Chapter 6 describes the changes in structure and properties that occur during aging of a gel in its pore liquor (or some other liquid). The discussion of drying is divided into two parts, with the theory concentrated in Chapter 7 and the phenomenology in Chapter 8. The structure of dried gels is explored in Chapter 9. Chapter 10 shows the possibility of using the gel as a substrate for chemical reactions or of modifying the bulk composition of the resulting ceramic by performing a surface reaction (such as nitridation) on the gel. Chapter 11 reviews the theory and practice of sintering, describing the mechanisms that govern densification of amorphous and crystalline materials, and showing the advantages of avoiding crystallization before sintering is complete. The properties of gel-derived and conventional ceramics are discussed in Chapter 12. The preparation of films is such an important aspect of sol-gel technology that the fundamentals of film formation are treated at length in Chapter 13. Films and other applications are briefly reviewed in Chapter 14. Materials scientists and researchers in the field of sol-gel processing will find the book invaluable.

Download or read book Synthesis and Characterization of Nanocrystalline Zinc Titanates written by Jan Mrazek and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The great attention of scientists has been paid to a family of zinc titanates for their phenomenal photo-chemical properties. They have been widely investigated as photo-active materials for solar cells, novel matrixes for active optical waveguides, lasers and microwave generators. However, advanced applications bring high demands to structural and chemical properties of employed materials. The book introduces versatile sol-gel routes leading to the nanocrystalline ternary phases. The scope lies in the material processing allowing the preparation of nanocrystalline powders and thin films of the superior optical quality with tailored properties. The book brings fundamental knowledge about the nucleation and crystallization processes leading to the formation of pure or doped nanocrystals from amorphous xerogels. The structural data of prepared nanomaterials are related to their electro-optical properties. The facile colloidal synthesis and the comprehensive overview of a number of various characterization techniques make the book invaluable for engineers, scientist and students working in the field of nanocrystalline materials and thin films.