Development Of Zno Fto Nanocomposites For The Use In Transparent Conductive Thin Films
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Development Of Zno Fto Nanocomposites For The Use In Transparent Conductive Thin Films
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Author : Christelle Habis
language : en
Publisher:
Release Date : 2022
Development Of Zno Fto Nanocomposites For The Use In Transparent Conductive Thin Films written by Christelle Habis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
My thesis work entitled “Development of ZnO-FTO nanocomposites for the use in transparent conductive thin films” is supervised by Professor Michel Aillerie at University of Lorraine. This work was mainly made at the “Laboratoire des Matériaux Optiques, Photoniques et Systèmes” LMOPS in Centrale Supélec, Metz. Although this work forms a whole in the elaboration of transparent conductive oxides, it is divided into two parts. The first part consists on identifying the properties of bulk materials (ZnO and FTO) deposited in the form of thin film. Whereas, the second part is about the elaboration and characterization of Zinc Oxide (ZnO) and Aluminum doped Zinc Oxide (AZO) nanofibers, then associated to FTO thin films to form nanocomposite. The main objective of this work is to make flexible electrodes using low cost and abundant material, but also improving the optical properties and more specifically the haze factor of the nanocomposite layers.Transparent conductive oxides (TCOs) are technologically significant class of materials extensively used in thin film solar cells due to their ability to transmit light and collect charge carriers. In addition to the fundamental qualities of transparency and conductivity, the TCOs are frequently desired to have a certain degree of surface roughness (i.e., texture) in order to effectively scatter transmitted light into the active materials, therefore lengthen the optical path and, as a result, enhance the performance of the cell and light absorption. This thesis focuses on the development of low-cost fabrication techniques for transparent oxide layers using non-polluting materials to enable the functionalization of operational devices with high efficiency for renewable energy production. The choice was made to study tin-based TCO layers doped with fluorine, F:SnO2, known as FTOs for "Fluor Tin Oxides". FTOs are wide band gap oxides, like ZnO, TiO2, Al2O3, pure or doped. In principle, these layers have a high scattering factor, as defined above, in order to improve the optical path and absorption. In addition, the optical texture of TCOs can be easily controlled by depositing suspensions of nanostructures before the film deposition. Generally, these nanostructures are nanoparticles or even carbon nanowires or metallic nanowires (silver, copper, ...) and more recently nanowires of TiO2 (presenting the disadvantage of the titanium element) or of undoped ZnO which unfortunately decrease the conductivity due to the increase of the interface resistance with the concentration of the nanoparticles.Therefore, we propose the study of FTO thin films, pure and also in the presence of ZnO and AZO nanofibers by electrospinning from a PVA-based solution in order to have a nanostructured layer with improved transparency and electrical conductivity properties to be integrated as transparent electrodes in photovoltaic cells, meeting the performance criteria defined above. With the characterization techniques available in the LMOPS laboratory and the University of Lorraine (SEM, Raman, EDX, DRX, UV-vis Spectro, ATG, AFM, profilometer) the growth will be followed by morphological and structural studies of the layers. Finally, electrical and optical properties, in particular absorption and scattering factor, will also be extensively investigated on selected layers with the best structural and morphological properties and the minimum of interface defects when deposited on a PV structure.
Study Of Fluorine Doped Tin Oxide Fto Thin Films For Photovoltaics Applications
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Author : Shanting Zhang
language : en
Publisher:
Release Date : 2017
Study Of Fluorine Doped Tin Oxide Fto Thin Films For Photovoltaics Applications written by Shanting Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Oxide Thin Films Multilayers And Nanocomposites
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Author : Paolo Mele
language : en
Publisher: Springer
Release Date : 2015-03-26
Oxide Thin Films Multilayers And Nanocomposites written by Paolo Mele and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-26 with Technology & Engineering categories.
This book provides a comprehensive overview of the science of nanostructured oxides. It details the fundamental techniques and methodologies involved in oxides thin film and bulk growth, characterization and device processing, as well as heterostructures. Both, experts in oxide nanostructures and experts in thin film heteroepitaxy, contribute the interactions described within this book.
Transparent Conductive Zinc Oxide
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Author : Klaus Ellmer
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-12-29
Transparent Conductive Zinc Oxide written by Klaus Ellmer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-29 with Science categories.
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.
Metal Oxide Nanocomposite Thin Films For Optoelectronic Device Applications
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Author : Rayees Ahmad Zargar
language : en
Publisher: John Wiley & Sons
Release Date : 2023-11-07
Metal Oxide Nanocomposite Thin Films For Optoelectronic Device Applications written by Rayees Ahmad Zargar and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-11-07 with Technology & Engineering categories.
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.
Zinc Oxide Bulk Thin Films And Nanostructures
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Author : Chennupati Jagadish
language : en
Publisher: Elsevier
Release Date : 2011-10-10
Zinc Oxide Bulk Thin Films And Nanostructures written by Chennupati Jagadish and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-10-10 with Technology & Engineering categories.
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
Synthesis Of Ruthenium Phosphorus Dyes And Their Incorporation In Zno Transparent Conducting Oxide And Zno Semi Conductor Thin Films For Photovoltaic Application
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Author : Congcong Shang
language : en
Publisher:
Release Date : 2013
Synthesis Of Ruthenium Phosphorus Dyes And Their Incorporation In Zno Transparent Conducting Oxide And Zno Semi Conductor Thin Films For Photovoltaic Application written by Congcong Shang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
In this work, we studied the development of new molecular ruthenium-phosphorus dyes and new Transparent Conducting Oxide (TCO) and ZnO Semi-Conductor (SC) materials in view of integrating them in dye sensitized solar cells. This thesis described first the original synthetic pathways that were developed to prepare both symmetrical and non-symmetrical complexes [Ru(bpy)2LL']n+ (L, L' : functionalized phosphorus ligands). Results highlight the predominant role of the phosphorus ligands in tuning the electronic and optical properties of the corresponding dyes. Secondly, we studied the preparation of new ZnO materials. In the goal of obtaining a homogeneous TCO/SC interface, zinc oxide doped Ga (ZnO:Ga) TCO and zinc oxide SC thin films were deposited by RF magnetron sputtering using ceramic targets. The microstructure and physical properties of these materials were studied. The deposition conditions were specifically optimized to prepare dense ZnO:Ga thin films with high transparency and good electrical conductivity for the TCO layer on one hand, and porous ZnO with high accessible surface for the SC layer on the other hand. The accessible surface of relatively porous ZnO thin films were further extended by post-deposition wet chemical etching.Finally, we associated the molecular dyes to the SC and the TCO materials by chemical grafting. Preliminary grafting tests were first investigated on homemade ZnO nanopowders before being validated on thin film materials. In these new materials, the dye is anchored to the ZnO through phosphorus functionalized functions. As a continuation of this work, the integration of these new materials in DSSCs will be the focus of further studies.
Synthesis Of Conductive Sol Gel Zno Films And Development Of Zno Printed Electronics
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Author : Farida Selim
language : en
Publisher:
Release Date : 2022
Synthesis Of Conductive Sol Gel Zno Films And Development Of Zno Printed Electronics written by Farida Selim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Technology & Engineering categories.
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.
Zno Thin Films
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Author : Paolo Mele
language : en
Publisher:
Release Date : 2019
Zno Thin Films written by Paolo Mele and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Zinc oxide thin films categories.
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.
Zinc Oxide Thin Films For Transparent Conducting Oxide Application
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Author : Vinod Kumar
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Zinc Oxide Thin Films For Transparent Conducting Oxide Application written by Vinod Kumar and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Transparent Conducting Oxides (TCOs) are unusual materials as they have to possess a high electrical conductivity with good transparency in the visible region of electromagnetic spectrum. TCOs have many applica-tions such as electrical inter-connections for window electrodes in flat panel displays, electro-optical devices and solar cells. TCOs are also receiving much attention and recognition as they are promising candidate for optoelectronic application in the ultraviolet to visible range. Other important parameters that determine the usefulness of TCOs are environmental stability, process-ing compatibility with other device elements and production cost etc. Indium (In) doped tin oxide also known as ITO is used as TCO in industries. Now a days, TCOs have already been largely investigated. Therefore, in the recent years, this has stimulated the development of new TCO materials like doped ZnO."
