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Development Characterization And Modeling Of Interfaces For High Efficiency Silicon Heterojunction Solar Cells
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Book Synopsis Development, Characterization and Modeling of Interfaces for High Efficiency Silicon Heterojunction Solar Cells by : Renaud Varache
Download or read book Development, Characterization and Modeling of Interfaces for High Efficiency Silicon Heterojunction Solar Cells written by Renaud Varache and published by . This book was released on 2013 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silicon Heterojunction Solar Cells by : W.R. Fahrner
Download or read book Silicon Heterojunction Solar Cells written by W.R. Fahrner and published by Trans Tech Publications Ltd. This book was released on 2006-08-15 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world of today must face up to two contradictory energy problems: on the one hand, there is the sharply growing consumer demand in countries such as China and India. On the other hand, natural resources are dwindling. Moreover, many of those countries which still possess substantial gas and oil supplies are politically unstable. As a result, renewable natural energy sources have received great attention. Among these, solar-cell technology is one of the most promising candidates. However, there still remains the problem of the manufacturing costs of such cells. Many attempts have been made to reduce the production costs of conventional solar cells (manufactured from monocrystalline silicon using diffusion methods) by instead using cheaper grades of silicon, and simpler pn-junction fabrication. That is the hero of this book; the heterojunction solar cell.
Book Synopsis Diffused Surfaces for High Efficiency Silicon Solar Cells by : Achim Kimmerle
Download or read book Diffused Surfaces for High Efficiency Silicon Solar Cells written by Achim Kimmerle and published by . This book was released on 2015 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Wilfried G. J. H. M. van Sark Publisher :Springer Science & Business Media ISBN 13 :3642222757 Total Pages :588 pages Book Rating :4.6/5 (422 download)
Book Synopsis Physics and Technology of Amorphous-Crystalline Heterostructure Silicon Solar Cells by : Wilfried G. J. H. M. van Sark
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.
Book Synopsis Physics and Technology of Amorphous-Crystalline Heterostructure Silicon Solar Cells by : Wilfried G. J. H. M. van Sark
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. This book was released on 2012-02-23 with total page 582 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.
Book Synopsis Optical Modeling and Characterization of Hydrogenated Amorphous Silicon Solar Cells by : Guoqiao Tao
Download or read book Optical Modeling and Characterization of Hydrogenated Amorphous Silicon Solar Cells written by Guoqiao Tao and published by Coronet Books. This book was released on 1994 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amorphous and Microcrystalline Silicon Solar Cells: Modeling, Materials and Device Technology by : Ruud E.I. Schropp
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.
Book Synopsis Fundamentals of Solar Cell Design by : Inamuddin
Download or read book Fundamentals of Solar Cell Design written by Inamuddin and published by John Wiley & Sons. This book was released on 2021-08-24 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cells are semiconductor devices that convert light photons into electricity in photovoltaic energy conversion and can help to overcome the global energy crisis. Solar cells have many applications including remote area power systems, earth-orbiting satellites, wristwatches, water pumping, photodetectors and remote radiotelephones. Solar cell technology is economically feasible for commercial-scale power generation. While commercial solar cells exhibit good performance and stability, still researchers are looking at many ways to improve the performance and cost of solar cells via modulating the fundamental properties of semiconductors. Solar cell technology is the key to a clean energy future. Solar cells directly harvest energy from the sun’s light radiation into electricity are in an ever-growing demand for future global energy production. Solar cell-based energy harvesting has attracted worldwide attention for their notable features, such as cheap renewable technology, scalable, lightweight, flexibility, versatility, no greenhouse gas emission, environment, and economy friendly and operational costs are quite low compared to other forms of power generation. Thus, solar cell technology is at the forefront of renewable energy technologies which are used in telecommunications, power plants, small devices to satellites. Aiming at large-scale implementation can be manipulated by various types used in solar cell design and exploration of new materials towards improving performance and reducing cost. Therefore, in-depth knowledge about solar cell design is fundamental for those who wish to apply this knowledge and understanding in industries and academics. This book provides a comprehensive overview on solar cells and explores the history to evolution and present scenarios of solar cell design, classification, properties, various semiconductor materials, thin films, wafer-scale, transparent solar cells, and so on. It also includes solar cells’ characterization analytical tools, theoretical modeling, practices to enhance conversion efficiencies, applications and patents.
Book Synopsis Multiscale Modeling of Silicon Heterojunction Solar Cells by : Pradyumna Muralidharan
Download or read book Multiscale Modeling of Silicon Heterojunction Solar Cells written by Pradyumna Muralidharan and published by . This book was released on 2019 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon photonic technology continues to dominate the solar industry driven by steady improvement in device and module efficiencies. Currently, the world record conversion efficiency (~26.6%) for single junction silicon solar cell technologies is held by silicon heterojunction (SHJ) solar cells based on hydrogenated amorphous silicon (a-Si:H) and crystalline silicon (c-Si). These solar cells utilize the concept of carrier selective contacts to improve device efficiencies. A carrier selective contact is designed to optimize the collection of majority carriers while blocking the collection of minority carriers. In the case of SHJ cells, a thin intrinsic a-Si:H layer provides crucial passivation between doped a-Si:H and the c-Si absorber that is required to create a high efficiency cell. There has been much debate regarding the role of the intrinsic a-Si:H passivation layer on the transport of photogenerated carriers, and its role in optimizing device performance. In this work, a multiscale model is presented which utilizes different simulation methodologies to study interfacial transport across the intrinsic a-Si:H/c-Si heterointerface and through the a-Si:H passivation layer. In particular, an ensemble Monte Carlo simulator was developed to study high field behavior of photogenerated carriers at the intrinsic a-Si:H/c-Si heterointerface, a kinetic Monte Carlo program was used to study transport of photogenerated carriers across the intrinsic a-Si:H passivation layer, and a drift-diffusion model was developed to model the behavior in the quasi-neutral regions of the solar cell. This work reports de-coupled and self-consistent simulations to fully understand the role and effect of transport across the a-Si:H passivation layer in silicon heterojunction solar cells, and relates this to overall solar cell device performance.
Book Synopsis Interface Modification by Ion Implantation and Optical Characterization of High-efficiency Cu(In,Ga)Se2 Solar Cells by : Jakob Haarstrich
Download or read book Interface Modification by Ion Implantation and Optical Characterization of High-efficiency Cu(In,Ga)Se2 Solar Cells written by Jakob Haarstrich and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three different issues are discussed in this thesis, which aim for a deeper understanding of Cu(In,Ga)Se2 material properties and solar cell functionality: (1)Near-surface ion implantation in Cu(In,Ga)Se2 absorber layers is studied as a method for the fabrication of buffer-free solar cells. Simulations show the beneficial effect of an n-type surface layer (buried junction). To obtain an inversion by means of ion implantation, an annealing procedure is developed that avoids annealing-induced degradation of the cell, minimizes the diffusion of the ions, and recovers the implantation damage. Buffer-free solar cells made from implanted absorbers show strongly improved diode characteristics comparable to the ones of cells with a CdS buffer and a maximum efficiency of 10.2% (11.2% active area). (2)A model is developed for the application of luminescence techniques on band-gap graded semiconductor thin-films. Several DA-emissions are detected in the cathodoluminescence (CL) and photoluminescence (PL) spectra of Ga-graded in Cu(In,Ga)Se2 and related to the local Ga-contents in the layer. The depth-distribution of the luminescence signal is correlated to the band-gap profile. Drift of excited charge carriers towards the band-gap minimum is caused by the grading-induced quasi-electric field, which must be considered when explaining the spectra obtained in plan-view measurements. Monochromatic CL imaging on cross-sections is capable to determine the minority carrier mobility.
Author :Wolfgang Rainer Fahrner Publisher :Springer Science & Business Media ISBN 13 :364237039X Total Pages :119 pages Book Rating :4.6/5 (423 download)
Book Synopsis Amorphous Silicon / Crystalline Silicon Heterojunction Solar Cells by : Wolfgang Rainer Fahrner
Download or read book Amorphous Silicon / Crystalline Silicon Heterojunction Solar Cells written by Wolfgang Rainer Fahrner and published by Springer Science & Business Media. This book was released on 2013-04-23 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous Silicon/Crystalline Silicon Solar Cells deals with some typical properties of heterojunction solar cells, such as their history, the properties and the challenges of the cells, some important measurement tools, some simulation programs and a brief survey of the state of the art, aiming to provide an initial framework in this field and serve as a ready reference for all those interested in the subject. This book helps to “fill in the blanks” on heterojunction solar cells. Readers will receive a comprehensive overview of the principles, structures, processing techniques and the current developmental states of the devices. Prof. Dr. Wolfgang R. Fahrner is a professor at the University of Hagen, Germany and Nanchang University, China.
Book Synopsis Crystalline Silicon Solar Cells by : Saleem Hussain Zaidi
Download or read book Crystalline Silicon Solar Cells written by Saleem Hussain Zaidi and published by Springer Nature. This book was released on 2021-08-02 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on crystalline silicon solar cell science and technology. It is written from the perspective of an experimentalist with extensive hands-on experience in modeling, fabrication, and characterization. A practical approach to solar cell fabrication is presented in terms of its three components: materials, electrical, and optical. The materials section describes wafer processing methods including saw damage removal, texturing, diffusion, and surface passivation. The electrical section focuses on formation of ohmic contacts on n and p-doped surfaces. The optical section illustrates light interaction with textured silicon surfaces in terms of geometrical, diffractive and physical optics, transmission, and surface photovoltage (SPV) spectroscopy. A final chapter analyzes performance of solar cells, fabricated with a wide range of process parameters. A brief economic analysis on the merits of crystalline silicon-based photovoltaic technology as a cottage industry is also included./div This professional reference will be an important resource for practicing engineers and technicians working with solar cell and PV manufacturing and renewable energy technologies, as well as upper-level engineering and material science students. Presents a practical approach to solar cell fabrication, and characterization; Offers modular methodology with detailed equipment and process parameters supported by experimental results; Includes processing diagrams and tables for 16% efficient solar cell fabrication.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Efficiency Solar Cells by : Xiaodong Wang
Download or read book High-Efficiency Solar Cells written by Xiaodong Wang and published by Springer Science & Business Media. This book was released on 2013-11-01 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the effort to increase the contribution of solar cells (photovoltaics) to our energy mix, this book addresses three main areas: making existing technology cheaper, promoting advanced technologies based on new architectural designs, and developing new materials to serve as light absorbers. Leading scientists throughout the world create a fundamental platform for knowledge sharing that combines the physics, materials, and device architectures of high-efficiency solar cells. While providing a comprehensive introduction to the field, the book highlights directions for further research, and is intended to stimulate readers’ interest in the development of novel materials and technologies for solar energy applications.
Book Synopsis Modeling of Amorphous Silicon/crystalline Silicon Heterojunction by Commercial Simulator by : Kunal Ghosh
Download or read book Modeling of Amorphous Silicon/crystalline Silicon Heterojunction by Commercial Simulator written by Kunal Ghosh and published by ProQuest. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous silicon/crystalline silicon (a-Si/c-Si) heterojunction solar cells offer high efficiency in a simplified and easily scalable process. Despite success in commercialization of these devices, the detailed working principles of them are poorly understood. In particular the effect of interface defects at the a-Si/c-Si heterojunction and the intervening intrinsic layer require explanation. The goal of this research is to understand the effect of interface defects and the intrinsic layer on non-linear effects in current-voltage curves of heterojunction devices by developing a computer model in SENTAURUS. Previously, computer models based in programs such as PC1D, AFORSHET and AMPS-1D have been used but suffer from drawbacks such as not including the gap states and interface modeling as well as not having the option of user-defined recombination statistics. In this work the commercial package SENTAURUS is used, providing a robust and reliable environment in which to develop the model. Key features of the model are the inclusion of dangling bond states via a defect pool model, band gap narrowing of the a-Si, region specific recombination-generation statistics and the change in capture cross section due to charging of trap states. Simulation of devices using this model has demonstrated several processes which guide for device design. Firstly, the number and nature of defects at the a-Si/c- Si interface influence device behavior strongly. More importantly, the thickness of the intrinsic layer is found to be critical. Under ideal operating conditions a p-type region is induced in the intrinsic layer leading to the p-n junction being formed in the c-Si. When the intrinsic layer thickness is increased this is no longer the case, with the p-n junction forming in the a-Si, leading to drastically reduced performance of the device. The development of the recombination models, their incorporation into SENTAURUS, the modeling results and the implications for device design allow improved heterojunction solar cell designs.
Book Synopsis Interface properties of amorphous/crystalline silicon heterojunctions by : Sara Olibet
Download or read book Interface properties of amorphous/crystalline silicon heterojunctions written by Sara Olibet and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2009-09 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cells based on monocrystalline silicon (c-Si) can potentially achieve high sunlight energy conversion efficiencies and thus could reach grid parity despite the high cost of c-Si. The efficiency of standard c-Si solar cells featuring diffused emitters and aluminum back surface fields (BSF) is limited by interface recombination. Alternatively the growth of intrinsic/doped amorphous silicon (a- Si: H) layer stacks on c-Si effectively passivates the c-Si surface and simultaneously forms the emitter and BSF. Such Si heterojunction (HJ) solar cells can use thin c-Si wafers, benefit from low production cost of a-Si: H layers and enable the highest efficiencies. The focus of this work is the study of interfaces in a-Si: H/c-Si heterostructures, particularly the electronic quality of the a-Si: H/c-Si heterointerface and its effect on the subsequent a- Si: H/c-Si HJ solar cell fabrication. Interface recombination modeling by considering the amphoteric nature of Si dangling bonds is in excellent agreement with measurements, and provides insight into the microscopic passivation mechan
Book Synopsis Development and Characterization of Laser Chemical Processes for High Efficiency Silicon Solar Cells by : Sven Kluska
Download or read book Development and Characterization of Laser Chemical Processes for High Efficiency Silicon Solar Cells written by Sven Kluska and published by . This book was released on 2014 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
