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Spatially Resolved Cathodoluminescence Of Cdte Thin Films And Solar Cells
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Book Synopsis Spatially Resolved Cathodoluminescence of CdTe Thin Films and Solar Cells by :
Download or read book Spatially Resolved Cathodoluminescence of CdTe Thin Films and Solar Cells written by and published by . This book was released on 2003 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have investigated the spatial distribution of different transitions identified in the emission spectra of CdTe thin films and solar cells by cathodoluminescence spectroscopic imaging (CLSI). Prior to back-contact deposition, the spectra are dominated by excitons (X) and donor-to-acceptor (DAP) transitions. After contacting, Cu acceptor states are found in addition to the X and DAP recombination processes. A very systematic behavior found in CdTe is that DAP transitions occur preferentially at grain boundaries (GBs). The distribution of these states responsible for the passivation of GBs is not affected by further processing, although additional levels participate in the recombination process. We believe that this stability is one of the reasons for the success of thin-film CdTe solar cells. Estimates of the densities of different donors and acceptors participating in the recombination process are possible from the analysis of the evolution of the emission spectra with the excitation level. It is found that the back contact suppresses some intrinsic acceptors (associated with the A center) near the back-contact interface and, therefore, Cu acceptor states should be responsible for the p-typeness of the back surface more than a reduction of compensation. CLSI measurements are shown to be helpful in understanding the physics of back-contact formation.
Book Synopsis Spatially Resolved Characterisation of CdTe Photovoltaic Solar Cells by : William Brooks
Download or read book Spatially Resolved Characterisation of CdTe Photovoltaic Solar Cells written by William Brooks and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Advances in Thin Film Photovoltaics by : Udai P. Singh
Download or read book Recent Advances in Thin Film Photovoltaics written by Udai P. Singh and published by Springer Nature. This book was released on 2022-09-02 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides recent development in thin-film solar cells (TFSC). TFSC have proven the promising approach for terrestrial and space photovoltaics. TFSC have the potential to change the device design and produce high efficiency devices on rigid/flexible substrates with significantly low manufacturing cost. TFSC have several advantages in manufacturing compared to traditional crystalline Si-solar cells like less requirement of materials, can be prepared with earth’s abundant materials, less processing steps, easy to dispose, etc. Several universities/research institutes/industry in India and abroad are involved in the research area of thin-film solar cells. The book helps the readers to find the details about different thin-film technologies and its advancement at one place. Each chapter covers properties of materials, its suitability for PV applications, simple manufacturing processes and recent and past literature survey. The issues related to the development of high efficiency TFSC devices over large area and its commercial and future prospects are discussed.
Book Synopsis Advanced Characterization Techniques for Thin Film Solar Cells by : Daniel Abou-Ras
Download or read book Advanced Characterization Techniques for Thin Film Solar Cells written by Daniel Abou-Ras and published by John Wiley & Sons. This book was released on 2016-07-13 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on advanced characterization methods for thin-film solar cells that have proven their relevance both for academic and corporate photovoltaic research and development. After an introduction to thin-film photovoltaics, highly experienced experts report on device and materials characterization methods such as electroluminescence analysis, capacitance spectroscopy, and various microscopy methods. In the final part of the book simulation techniques are presented which are used for ab-initio calculations of relevant semiconductors and for device simulations in 1D, 2D and 3D. Building on a proven concept, this new edition also covers thermography, transient optoelectronic methods, and absorption and photocurrent spectroscopy.
Book Synopsis Advances in Imaging and Electron Physics by : Peter W. Hawkes
Download or read book Advances in Imaging and Electron Physics written by Peter W. Hawkes and published by Academic Press. This book was released on 2007-07-18 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Imaging and Electron Physics merges two long-running serials-Advances in Electronics and Electron Physics and Advances in Optical and Electron Microscopy. This series features extended articles on the physics of electron devices (especially semiconductor devices), particle optics at high and low energies, microlithography, image science and digital image processing, electromagnetic wave propagation, electron microscopy, and the computing methods used in all these domains
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Mowafak Al-Jassim Publisher :Institution of Engineering and Technology ISBN 13 :1839530235 Total Pages :457 pages Book Rating :4.8/5 (395 download)
Book Synopsis Advanced Characterization of Thin Film Solar Cells by : Mowafak Al-Jassim
Download or read book Advanced Characterization of Thin Film Solar Cells written by Mowafak Al-Jassim and published by Institution of Engineering and Technology. This book was released on 2020-09-17 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycrystalline thin-film solar cells have reached a levelized cost of energy that is competitive with all other sources of electricity. The technology has significantly improved in recent years, with laboratory cell efficiencies for cadmium telluride (CdTe), perovskites, and copper indium gallium diselenide (CIGS) each exceeding 22 percent. Both CdTe and CIGS solar panels are now produced at the gigawatt scale. However, there are ongoing challenges, including the continued need to improve performance and stability while reducing cost. Advancing polycrystalline solar cell technology demands an in-depth understanding of efficiency, scaling, and degradation mechanisms, which requires sophisticated characterization methods. These methods will enable researchers and manufacturers to improve future solar modules and systems.
Book Synopsis Thin Film Solar Cells by : Jef Poortmans
Download or read book Thin Film Solar Cells written by Jef Poortmans and published by John Wiley & Sons. This book was released on 2006-10-16 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin-film solar cells are either emerging or about to emerge from the research laboratory to become commercially available devices finding practical various applications. Currently no textbook outlining the basic theoretical background, methods of fabrication and applications currently exist. Thus, this book aims to present for the first time an in-depth overview of this topic covering a broad range of thin-film solar cell technologies including both organic and inorganic materials, presented in a systematic fashion, by the scientific leaders in the respective domains. It covers a broad range of related topics, from physical principles to design, fabrication, characterization, and applications of novel photovoltaic devices.
Book Synopsis Studies of CdTe Thin Films and Solar Cells Grown by MOCVD by :
Download or read book Studies of CdTe Thin Films and Solar Cells Grown by MOCVD written by and published by . This book was released on 2005 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-situ Electron Microscopy by : Gerhard Dehm
Download or read book In-situ Electron Microscopy written by Gerhard Dehm and published by John Wiley & Sons. This book was released on 2012-05-30 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adopting a didactical approach from fundamentals to actual experiments and applications, this handbook and ready reference covers real-time observations using modern scanning electron microscopy and transmission electron microscopy, while also providing information on the required stages and samples. The text begins with introductory material and the basics, before describing advancements and applications in dynamic transmission electron microscopy and reflection electron microscopy. Subsequently, the techniques needed to determine growth processes, chemical reactions and oxidation, irradiation effects, mechanical, magnetic, and ferroelectric properties as well as cathodoluminiscence and electromigration are discussed.
Book Synopsis Compound Semiconductor Photovoltaics by : Materials Research Society. Meeting
Download or read book Compound Semiconductor Photovoltaics written by Materials Research Society. Meeting and published by . This book was released on 2003 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on basic and applied materials research related to compound semiconductors. Emphasis is on materials that are used, or have clear potential use, as thin films in solar cells and spin-off applications. Relevant materials include Cu(In, Ga, Al)(Se, S)2, MX (M = Zn and/or Cd; X = S, Se and/or Te), III-V photovoltaic materials, and transparent conducting oxides. Understanding fundamental materials limitations, real or perceived, are of particular interest. Highlights center on: materials-related prerequisites for high-efficiency thin-film solar cells; the dynamics of chemical treatment/etching of CdTe with emphasis on back contacting; high-resolution microanalysis of grain boundaries and surface chemistry and how they affect device performance; the role and significance of transparent conducting oxides in device performance; and the electronic structure of highly mismatched III-V alloy semiconductors.
Book Synopsis Capacitance Spectroscopy of Semiconductors by : Jian V. Li
Download or read book Capacitance Spectroscopy of Semiconductors written by Jian V. Li and published by CRC Press. This book was released on 2018-07-06 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capacitance spectroscopy refers to techniques for characterizing the electrical properties of semiconductor materials, junctions, and interfaces, all from the dependence of device capacitance on frequency, time, temperature, and electric potential. This book includes 15 chapters written by world-recognized, leading experts in the field, academia, national institutions, and industry, divided into four sections: Physics, Instrumentation, Applications, and Emerging Techniques. The first section establishes the fundamental framework relating capacitance and its allied concepts of conductance, admittance, and impedance to the electrical and optical properties of semiconductors. The second section reviews the electronic principles of capacitance measurements used by commercial products, as well as custom apparatus. The third section details the implementation in various scientific fields and industries, such as photovoltaics and electronic and optoelectronic devices. The last section presents the latest advances in capacitance-based electrical characterization aimed at reaching nanometer-scale resolution.
Book Synopsis Solar Cells by : Leonid A. Kosyachenko
Download or read book Solar Cells written by Leonid A. Kosyachenko and published by BoD – Books on Demand. This book was released on 2011-11-02 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book of this four-volume edition is dedicated to one of the most promising areas of photovoltaics, which has already reached a large-scale production of the second-generation thin-film solar modules and has resulted in building the powerful solar plants in several countries around the world. Thin-film technologies using direct-gap semiconductors such as CIGS and CdTe offer the lowest manufacturing costs and are becoming more prevalent in the industry allowing to improve manufacturability of the production at significantly larger scales than for wafer or ribbon Si modules. It is only a matter of time before thin films like CIGS and CdTe will replace wafer-based silicon solar cells as the dominant photovoltaic technology. Photoelectric efficiency of thin-film solar modules is still far from the theoretical limit. The scientific and technological problems of increasing this key parameter of the solar cell are discussed in several chapters of this volume.
Book Synopsis Beam Injection Assessment of Microstructures in Semiconductors by : H. Tomokage
Download or read book Beam Injection Assessment of Microstructures in Semiconductors written by H. Tomokage and published by Trans Tech Publications Ltd. This book was released on 2001-04-15 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characterisation of semiconductors is of key importance in preparing and applying semiconductors in industry. Volume is indexed by Thomson Reuters CPCI-S (WoS). The present work deals with theoretical and experimental topics which are related to the assessment of microstructures in semiconductors by means of beam injection and related methods.
Download or read book Applications written by Alfred J. Meixner and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-12-31 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanospectroscopy addresses the spectroscopy of very small objects down to single molecules or atoms, or high-resolution spectroscopy performed on regions much smaller than the wavelength of light, revealing their local optical, electronic and chemical properties. This work highlights modern examples where optical nanospectroscopy is exploited in photonics, optical sensing, medicine, or state-of-the-art applications in material, chemical and biological sciences. Examples include the use of nanospectroscopy in such varied fields as quantum emitters, dyes and two-dimensional materials, on solar cells, radiation imaging detectors, biosensors and sensors for explosives, in biomolecular and cancer detection, food science, and cultural heritage studies. Also by the editors: Textbook "Optical Nanospectroscopy": _"Fundamentals & Methods" (Vol. 1) and _"Instrumentation, Simulation & Materials" (Vol. 2).
Book Synopsis Transmission Electron Microscopy Characterization of Nanomaterials by : Challa S.S.R. Kumar
Download or read book Transmission Electron Microscopy Characterization of Nanomaterials written by Challa S.S.R. Kumar and published by Springer Science & Business Media. This book was released on 2013-12-09 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Third volume of a 40volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Transmission electron microscopy characterization of nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume an essential reading for research scientists in academia and industry.
Book Synopsis CdTe/CdS Thin Film Solar Cells Fabricated on Flexible Substrates by : Vasilios Palekis
Download or read book CdTe/CdS Thin Film Solar Cells Fabricated on Flexible Substrates written by Vasilios Palekis and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cadmium Telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal bandgap of 1.45 eV and its high optical absorption coefficient. The typical CdTe thin film solar cell is of the superstrate configuration where a window layer (CdS), the absorber (CdTe) and a back contact are deposited onto glass coated with a transparent electrode. Substrate CdTe solar cells where the above listed films are deposited in reverse are not common. In this study substrate CdTe solar cells are fabricated on flexible foils. The properties of the Molybdenum back contact, Zinc Telluride (ZnTe) interlayer and CdTe absorber on the flexible foils were studied and characterized using X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Substrate curvature and film flaking was observed during the fabrication as a result of differences in thermal expansion coefficients between the substrate and the deposited films, and also due to impurity diffusion from the foil into the film stack. In order to overcome this problem diffusion barriers where used to eliminate contamination. Silicon dioxide (SiO2), silicon nitride (Si3N4) and molybdenum nitride (MoxNy) were used as such barriers. Electrical characterization of completed devices was carried out by Current-Voltage (J-V), Capacitance-Voltage (C-V) and Spectral Response (SR) measurements. Roll-over was observed in the first quadrant of J-V curves indicating the existence of a back barrier due to a Schottky back contact. The formation of non-rectifying contact to p-CdTe thin-film is one of the major and critical challenges associated with the fabrication of efficient and stable solar cells. Several materials (ZnTe, Cu, Cu2Te, and Te) were studied as potential candidates for the formation of an effective back contact.
