Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes Third Quarterly Technical Status Report April 1 June 30 1978 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the rationale for selection of the two-step recrystallization process that is being developed, presents the results of the latest first-step recrystallization experiments, and outlines the calculations appropriate to the design of second-step thermal process experiments. Results of a computer run for first-step recrystallization are also presented. The report concludes with an updating of the results obtained from the thermal and pulsed electron beam annealing of shallow implanted GaAs.
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Silicon Recrystallization and Thin film Solar Cell Processes written by Spire Corporation and published by . This book was released on 1978 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Recrystallization Thin film Solar Cell Processes written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Recrystallization and Thin film Solar Cell Processes Final Report October 1 1977 September 30 1978 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The program had two thrusts: (1) based upon electron-beam thermal treatment of deposited silicon films, to increase crystallite sizes to the range thought to be useful for polycrystalline, thin-film cell fabrication; and (2) to explore the feasibility of applying the directed-energy technologies of ion implantation and pulsed electron beam activation, previously developed for silicon cell fabrication, to junction formation in III-V compounds. The culmination of the recrystallization effort was demonstrating grains broader than the 30-.mu.m film in which they were regrown. This proof of principle was accomplished by means of two-step thermal process that consisted of large-area pulsed electron beam melting followed by small-area heating in a moving DC electron beam. The pulsed beam treatment reduced the three-dimensional disorder of the initial submicrometer crystallite silicon film to one characterized by submicrometercross-section, full-film-thickness, columnar crystallites. The swept beam treatment allowed coalesence of these columnar crystallites, through directional freezing, in the melt path of the beam. It is believed that this demonstration is the first evidence of greater-than-film thickness recrystallization of useful thickness silicon films other than by extended heat treatment at greater than 1350°C. The results of the studies on junction formation in III-V materials, while not so dramatic, have shown that low-energy ion implantation is a potentially viable alternative to liquid or vapor phase epitaxy in the fabrication of GaAs solar cells. Further, the technical feasibility of pulsed electron beam activation of ion implanted junctions in GaAs has been demonstrated. Lastly, the concept of forming front-layer windows of GaP and AlGaAs on GaAs by high-dose ion implantation has been shown to be technically feasible.
Download or read book Development of Recrystallization and Thin film Solar Cell Processes First Quarterly Technical Status Report October 1 December 31 1977 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytic model for pulse heating effects in silicon films is presented in detail. The objective of the model is prediction of equipment design parameters that are required for recrystallizing silicon films of practical solar cell thicknesses. A brief review of the physics of electron absorption preceeds the presentation of the model. GaAs work during this period has consisted of the mesa diode structure evaluation of thermally annealed shallow implants. V/sub oc/ and I/sub sc/ summaries are presented.
Download or read book Development of Recrystallization and Thin film Solar Cell Processes written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Recrystallization and Thin film Solar Cell Processes Quarterly Technical Progress Report No 2 January 1 March 31 1978 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on fabrication of recrystallized solar cells and energy beam processing of gallium arsenide and homologous compounds is described. The key processes, exclusive of the film recrystallization step, are ion implantation for junction formation followed by pulsed electron beam annealing for activation of the implanted dopants and restoration of lattice perfection and electrostatic bonding of the partially processed film to a glass superstrate combined with simultaneous release from the deposition substrate. (WHK).
Download or read book Nanoliquid Processes for Electronic Devices written by Tatsuya Shimoda and published by Springer. This book was released on 2019-02-05 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the results of the research on how to make small electronic devices with high properties by using simple liquid processes such as coating, self-assembling and printing, especially focusing on devices composed of silicon and oxide materials. It describes syntheses and analyses of solution materials, formations of solid thin films from solutions, newly developed patterning methods to make devices, and characterization of the developed devices. In the first part of the book, the research on liquid silicon (Si) materials is described. Because the use of a liquid material is a quite new idea for Si devices, this book is the first one to describe liquid Si materials for electronic devices. Si devices as typified by MOS-FET have been produced by using solid and gas materials. This volume precisely describes a series of processes from material synthesis to device fabrication for those who are interested and are/will be engaged in liquid Si-related work. In the latter part of the book, a general method of how to make good oxide films from solutions and a new imprinting method to make nanosized patterns are introduced. For making oxide films with high quality, the designing of the solution is crucial. If a solution is designed properly, a gel material called "cluster gel" can be formed which is able to be imprinted to form nanosized patterns. The anticipated readers of this book are researchers, engineers, and students who are interested in solution and printing processes for making devices. More generally, this book will also provide guidelines for corporate managers and executives who are responsible for making strategies for future manufacturing processes.
Download or read book Silicon Thin Film Crystallization and Solar Cell Fabrication written by A.R. Kirkpatrick and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A process is developed for fabricating high efficiency (10% goal) solar cells from thin silicon films using novel techniques of electrostatic bonding for film transfer, ion implantation for junction formation, and pulsed electron beams for high temperature processing. Also, thin silicon films are crystallized using directed energy sources. Section 2 of this report reviews the steps being developed in the thin film processing sequence. Considerable effort is expended in junction formation and grain boundary treatments during this reporting period. Mesa diode structures are used to evaluate a wide range of processing parameters. The most significant item of progress is the fabrication of mesa diode solar cell structures using ion implantation and pulse armealing for junction formation. Section 3 reviews thin N11.crystallization in its discussion of thin film requirements, high temperature -pressure processing, complete melt recrystallization, and pulsed electron beam re -crystallization.
Download or read book Crystal Growth of Silicon for Solar Cells written by Kazuo Nakajima and published by Springer Science & Business Media. This book was released on 2010-03-12 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, a continuation of the series “Advances in Materials Research,” is intended to provide the general basis of the science and technology of crystal growth of silicon for solar cells. In the face of the destruction of the global environment,the degradationofworld-widenaturalresourcesandtheexha- tion of energy sources in the twenty-?rst century, we all have a sincere desire for a better/safer world in the future. In these days, we strongly believe that it is important for us to rapidly developanewenvironment-friendlycleanenergyconversionsystemusingsolar energyastheultimatenaturalenergysource. Forinstance,mostofournatural resources and energy sources will be exhausted within the next 100 years. Speci?cally, the consumption of oil, natural gas, and uranium is a serious problem. Solar energy is the only ultimate natural energy source. Although 30% of total solar energy is re?ected at the earth’s surface, 70% of total solar energy can be available for us to utilize. The available solar energy amounts to severalthousand times larger than the world’s energy consumption in 2000 of about 9,000 Mtoe (M ton oil equivalent). To manage 10% of the world’s energy consumption at 2050 by solar energy, we must manufacture 40 GW solar cells per year continuously for 40 years. The required silicon feedstock is about 400,000 ton per year. We believe that this is an attainable target, since it can be realized by increasing the world production of silicon feedstock by 12times asmuchasthe presentproductionat2005.
Download or read book Dye sensitized Solar Cells written by Songyuan Dai and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-07-05 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The operation of everything in the universe needs a special „material“-energy. The earth is no exception. There are many kinds of energy sources on earth. But where does the earth‘s energy come from? The answer is that everything grows under the sun. Developing renewable energy is of strategic importance to achieve sustainable energy supply. Simulating natural photosynthesis is the ultimate goal of effi cient solar energy conversion. Photovoltaic technology has been widely used in industry and will be one of the major energy sources in the future. Developing new materials and structures, the photoelectric conversion effi ciency of solar cells will be improved day by day, and solar cells will attract more and more attention. This book presents principles of solar photovoltaic conversion, and introduces the physical and chemical processes involved. Mechanisms which affect solar cell performance are also discussed.
