Download or read book Characterization of Amorphous Silicon Advanced Materials and PV Devices written by P. C. Taylor and published by . This book was released on 2005 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The major objectives of this subcontract have been: (1) understand the microscopic properties of the defects that contribute to the Staebler-Wronski effect to eliminate this effect, (2) perform correlated studies on films and devices made by novel techniques, especially those with promise to improve stability or deposition rates, (3) understand the structural, electronic, and optical properties of films of hydrogenated amorphous silicon (a-Si:H) made on the boundary between the amorphous and microcrystalline phases, (4) search for more stable intrinsic layers of a-Si:H, (5) characterize the important defects, impurities, and metastabilities in the bulk and at surfaces and interfaces in a-Si:H films and devices and in important alloy systems, and (6) make state-of-the-art plasma-enhanced chemical vapor deposition (PECVD) devices out of new, advanced materials, when appropriate. All of these goals are highly relevant to improving photovoltaic devices based on a-Si:H and related alloys. With regard to the first objective, we have identified a paired hydrogen site that may be the defect that stabilizes the silicon dangling bonds formed in the Staebler-Wronski effect.
Download or read book Characterization of Amorphous Silicon Advanced Materials and PV Devices written by Philip Craig Taylor and published by . This book was released on 2005 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Amorphous Silicon Thin Films and PV Devices written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major accomplishments of the previous year include: (1) an evaluation of the potential for n-type doping of a-SiS(subscript x):H and a-SiSe(subscript x):H alloys, (2) an investigation of the optically induced metastabilities in a-SiS(subscript x):H and a-SiSe(subscript x):H alloys with regard to their potential use in photovoltaic applications, and (3) a more detailed understanding of the kinetics of light-induced electron spin resonance (ESR) due to carriers trapped in localized band-tail states in a-Si:H. Also of importance are preliminary measurements of the defects and metastabilities in hot-wire samples of a-Si:H and in samples of a-Si:H made under strong hydrogen dilution. The preliminary measurements on hydrogen dilution suggest that the production of neutral silicon dangling bonds is not suppressed from the standard material even though there appears to be an improvement in the stability of cells made using the hydrogen-dilution process. The new three-chamber, load-locked plasma-enhanced chemical vapor deposition system is functioning and producing intrinsic and doped films of a-Si:H. Plans for the next year include the production of high quality devices using this new deposition system.
Download or read book Amorphous and Microcrystalline Silicon Solar Cells Modeling Materials and Device Technology written by Ruud E.I. Schropp and published by Springer. This book was released on 2016-07-18 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous silicon solar cell technology has evolved considerably since the first amorphous silicon solar cells were made at RCA Laboratories in 1974. Scien tists working in a number of laboratories worldwide have developed improved alloys based on hydrogenated amorphous silicon and microcrystalline silicon. Other scientists have developed new methods for growing these thin films while yet others have developed new photovoltaic (PV) device structures with im proved conversion efficiencies. In the last two years, several companies have constructed multi-megawatt manufacturing plants that can produce large-area, multijunction amorphous silicon PV modules. A growing number of people be lieve that thin-film photovoltaics will be integrated into buildings on a large scale in the next few decades and will be able to make a major contribution to the world's energy needs. In this book, Ruud E. I. Schropp and Miro Zeman provide an authoritative overview of the current status of thin film solar cells based on amorphous and microcrystalline silicon. They review the significant developments that have occurred during the evolution of the technology and also discuss the most im portant recent innovations in the deposition of the materials, the understanding of the physics, and the fabrication and modeling of the devices.
Download or read book Thin Film Solar Cells written by Jef Poortmans and published by John Wiley & Sons. This book was released on 2006-10-02 with total page 502 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.
Download or read book Technology and Applications of Amorphous Silicon written by Robert A. Street and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives the first systematic and complete survey of technology and application of amorphous silicon, a material with a huge potential in electronic applications. The book features contributions by world-wide leading researchers in this field.
Download or read book Characterization of Amorphous Silicon Thin Films and PV Devices Final Technical Report January 1998 October 2001 written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the most significant results of the three phases: (1) development of a second harmonic detection technique for electron spin resonance (ESR) and optically excited ESR (LESR) in a-Si:H and related alloys, (2) discovery of universal kinetics for the decay of optically excited electrons and holes in a-Si:H and related alloys at low temperatures, (3) first detection of opticallyexcited band-tail electrons and holes in hydrogenated amorphous germanium (a-Ge:H), (4) first ESR study of the kinetics for the production of silicon dangling bonds in a-Si:H at low temperatures, and (5) determination from 1H NMR that there exists an order of magnitude more molecular hydrogen (H2) in a-Si:H than previously measured.
Download or read book Advanced Silicon Materials for Photovoltaic Applications written by Sergio Pizzini and published by John Wiley & Sons. This book was released on 2012-06-07 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, the silicon feedstock for photovoltaic cells comes from processes which were originally developed for the microelectronic industry. It covers almost 90% of the photovoltaic market, with mass production volume at least one order of magnitude larger than those devoted to microelectronics. However, it is hard to imagine that this kind of feedstock (extremely pure but heavily penalized by its high energy cost) could remain the only source of silicon for a photovoltaic market which is in continuous expansion, and which has a cumulative growth rate in excess of 30% in the last few years. Even though reports suggest that the silicon share will slowly decrease in the next twenty years, finding a way to manufacture a specific solar grade feedstock in large quantities, at a low cost while maintaining the quality needed, still remains a crucial issue. Thin film and quantum confinement-based silicon cells might be a complementary solution. Advanced Silicon Materials for Photovoltaic Applications has been designed to describe the full potentialities of silicon as a multipurpose material and covers: Physical, chemical and structural properties of silicon Production routes including the promise of low cost feedstock for PV applications Defect engineering and the role of impurities and defects Characterization techniques, and advanced analytical techniques for metallic and non-metallic impurities Thin film silicon and thin film solar cells Innovative quantum effects, and 3rd generation solar cells With contributions from internationally recognized authorities, this book gives a comprehensive analysis of the state-of-the-art of process technologies and material properties, essential for anyone interested in the application and development of photovoltaics.
Download or read book Physics and Technology of Amorphous Crystalline Heterostructure Silicon Solar Cells written by Wilfried G. J. H. M. van Sark and published by Springer Science & Business Media. This book was released on 2011-11-16 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today’s solar cell multi-GW market is dominated by crystalline silicon (c-Si) wafer technology, however new cell concepts are entering the market. One very promising solar cell design to answer these needs is the silicon hetero-junction solar cell, of which the emitter and back surface field are basically produced by a low temperature growth of ultra-thin layers of amorphous silicon. In this design, amorphous silicon (a-Si:H) constitutes both „emitter“ and „base-contact/back surface field“ on both sides of a thin crystalline silicon wafer-base (c-Si) where the electrons and holes are photogenerated; at the same time, a-Si:H passivates the c-Si surface. Recently, cell efficiencies above 23% have been demonstrated for such solar cells. In this book, the editors present an overview of the state-of-the-art in physics and technology of amorphous-crystalline heterostructure silicon solar cells. The heterojunction concept is introduced, processes and resulting properties of the materials used in the cell and their heterointerfaces are discussed and characterization techniques and simulation tools are presented.
Download or read book Plasma Deposition of Amorphous Silicon Based Materials written by Pio Capezzuto and published by Elsevier. This book was released on 1995-10-10 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors made from amorphous silicon have recently become important for their commercial applications in optical and electronic devices including FAX machines, solar cells, and liquid crystal displays. Plasma Deposition of Amorphous Silicon-Based Materials is a timely, comprehensive reference book written by leading authorities in the field. This volume links the fundamental growth kinetics involving complex plasma chemistry with the resulting semiconductor film properties and the subsequent effect on the performance of the electronic devices produced. Focuses on the plasma chemistry of amorphous silicon-based materials Links fundamental growth kinetics with the resulting semiconductor film properties and performance of electronic devices produced Features an international group of contributors Provides the first comprehensive coverage of the subject, from deposition technology to materials characterization to applications and implementation in state-of-the-art devices
Download or read book Plasma Deposition of Amorphous Silicon based Materials written by Giovanni Bruno and published by . This book was released on 1995 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors made from amorphous silicon have recently become important for their commercial applications in optical and electronic devices including FAX machines, solar cells, and liquid crystal displays. Plasma Deposition of Amorphous Silicon-Based Materials is a timely, comprehensive reference book written by leading authorities in the field. This volume links the fundamental growth kinetics involving complex plasma chemistry with the resulting semiconductor film properties and the subsequent effect on the performance of the electronic devices produced. Key Features * Focuses on the plasma chemistry of amorphous silicon-based materials * Links fundamental growth kinetics with the resulting semiconductor film properties and performance of electronic devices produced * Features an international group of contributors * Provides the first comprehensive coverage of the subject, from deposition technology to materials characterization to applications and implementation in state-of-the-art devices
Download or read book Fabrication and Characterization of Amorphous Silicon Devices Made by Plasma enhanced Chemical vapor Deposition written by Cherng-chi Yin and published by . This book was released on 1989 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amorphous and Microcrystalline Silicon Technology 1997 Volume 467 written by Michael Hack and published by Materials Research Society. This book was released on 1997-12-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the original focus of this long-standing series from the Materials Research Society was on hydrogenated amorphous silicon, the symposia have now expanded to incorporate microcrystalline silicon. The two, in fact, are very closely connected since the latter material can be grown by making comparatively small changes to the deposition conditions for amorphous silicon. This book offers an interesting variety of papers on deposition techniques, materials properties, characterization methods and devices - nearly all focused on thin-film forms of hydrogenated silicon. Topics include: Staebler-Wronski and fundamental defect studies in amorphous silicon; the story of hydrogen in amorphous silicon; photoelectric properties of amorphous silicon; deposition and properties of microcrystalline silicon; deposition studies for amorphous silicon and related materials; solar cells; thin-film transistors and sensors and novel device concepts.
Download or read book Thin Film Silicon Solar Cells written by Arvind Shah and published by EPFL Press. This book was released on 2010-08-19 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photovoltaic technology has now developed to the extent that it is close to fulfilling the vision of a "solar-energy world," as devices based on this technology are becoming efficient, low-cost and durable. This book provides a comprehensive treatment of thin-film silicon, a prevalent PV material, in terms of its semiconductor nature, starting out with the physical properties, but concentrating on device applications. A special emphasis is given to amorphous silicon and microcrystalline silicon as photovoltaic materials, along with a model that allows these systems to be physically described in the simplest manner possible, thus allowing the student or scientist/engineer entering the field of thin-film electronics to master a few basic concepts that are distinct from those in the field of conventional semiconductors. The main part of the book deals with solar cells and modules by illustrating the basic functioning of these devices, along with their limitations, design optimization, testing and fabrication methods. Among the manufacturing processes discussed are plasma-assisted and hot-wire deposition, sputtering, and structuring techniques.
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.
Download or read book A Material Characterization of Hydrogenated Intrinsic Amorphous Silicon written by John Henry Hudgins and published by . This book was released on 1986 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy written by Christoph Richter and published by Springer. This book was released on 2012-11-29 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gathering some 30 entries from the Encyclopedia of Sustainability Science and Technology, this book presents fundamental principles and technologies for sustainably harnessing solar energy. Covers photovoltaics, solar thermal energy, solar radiation and more.
