Download or read book Two dimensional Numerical Simulations of High efficiency Silicon Solar Cells written by University of New South Wales. School of Computer Science and Engineering and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "This paper reports on the first use of two-dimensional (2D) device simulation for optimising the front-finger spacing of one-sun high-efficiency silicon solar cells of practical dimensions. We examine the 2D current flow patterns in these devices under various illumination conditions, resulting in improved insight into the operating conditions of the cells. Results for the optimal spacing of the front metal fingers are presented and compared to predictions obtained from 1D simulations. We also address difficulties facing the numerical modelling of high-efficiency silicon solar cells."
Download or read book Two dimensional Numerical Modeling of High efficiency Silicon Solar Cells written by Pietro P. Altermatt and published by . This book was released on 1994 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two dimensional Numerical Optimisation Study of the Rear Contact Geometry of High efficiency Silicon Solar Cells written by Armin G. Aberle and published by . This book was released on 1993 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Under one-sun illumination, the highest energy conversion efficiencies of silicon solar cells are presently obtained with bifacially contacted n+p cells, where contact to the p-type substrate is made via small openings in the rear passivating oxide. In this work, a state-of-the-art 2-dimensional (2D) semi-conductor device simulator is applied to these devices in order to investigate the effects arising from the rear metallisation scheme. The impact of various cell parameters (i.e. substrate resistivity, rear surface recombination model (flatband or surface band bending conditions), positive oxide charge density, capture cross section ratio) on the cell's current-voltage (I-V) characteristics and the optimum rear contact spacing is investigated. For the first time the experimentally observed highly non-ideal I-V curves of rear point- contacted high-efficiency silicon solar cells made at the University of New South Wales (UNSW) have been modelled with a high degree of accuracy. This is achieved by properly accounting for the complex recombination behaviour at the rear oxidised surface. The 2D simulations show that the non-ideal I-V curves result from the unequal capture cross sections of electrons and holes at the rear Si-SiO2 interface and the surface band bending induced by positive oxide charges and metal/silicon work function differences. For the UNSW cells, optimum one-sun efficiency is obtained on 2 Ohm cm substrates and rear contact spacings of 0.2-0.3 mm. The 2d simulations presented in this work clearly confirm the experimental findings and reveal the physical mechanisms which favour this particular contact design."
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.
Download or read book Thin Film Crystalline Silicon Solar Cells written by Rolf Brendel and published by John Wiley & Sons. This book was released on 2011-02-15 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction to the physics of silicon solar cells focuses on thin cells, while reviewing and discussing the current status of the important technology. An analysis of the spectral quantum efficiency of thin solar cells is given as well as a full set of analytical models. This is the first comprehensive treatment of light trapping techniques for the enhancement of the optical absorption in thin silicon films.
Download or read book Numerical Simulation and Analysis of High efficiency Silicon Solar Cells and Tandem Devices written by Christoph Alexander Meßmer and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two dimensional numerical optimisation study of the rear contract geometry of high efficiency silicon solar cells written by and published by . This book was released on 1993 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of Semiconductor Devices and Processes written by Siegfried Selberherr and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "Fifth International Conference on Simulation of Semiconductor Devices and Processes" (SISDEP 93) continues a series of conferences which was initiated in 1984 by K. Board and D. R. J. Owen at the University College of Wales, Swansea, where it took place a second time in 1986. Its organization was succeeded by G. Baccarani and M. Rudan at the University of Bologna in 1988, and W. Fichtner and D. Aemmer at the Federal Institute of Technology in Zurich in 1991. This year the conference is held at the Technical University of Vienna, Austria, September 7 - 9, 1993. This conference shall provide an international forum for the presentation of out standing research and development results in the area of numerical process and de vice simulation. The miniaturization of today's semiconductor devices, the usage of new materials and advanced process steps in the development of new semiconduc tor technologies suggests the design of new computer programs. This trend towards more complex structures and increasingly sophisticated processes demands advanced simulators, such as fully three-dimensional tools for almost arbitrarily complicated geometries. With the increasing need for better models and improved understand ing of physical effects, the Conference on Simulation of Semiconductor Devices and Processes brings together the simulation community and the process- and device en gineers who need reliable numerical simulation tools for characterization, prediction, and development.
Download or read book The Characterisation and Optimisation of High Efficiency Silicon Solar Cells by Means of Numerical Simulations written by Pietro P. Altermatt and published by . This book was released on 1997 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dt. Zusammenfass.
Download or read book Future Trends in Microelectronics written by Serge Luryi and published by John Wiley & Sons. This book was released on 2013-06-13 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaders in the field predict the future of the microelectronics industry This seventh volume of Future Trends in Microelectronics summarizes and synthesizes the latest high-level scientific discussions to emerge from the Future Trends in Microelectronics international workshop, which has occurred every three years since 1995. It covers the full scope of cutting-edge topics in microelectronics, from new physical principles (quantum computing, correlated electrons), to new materials (piezoelectric nanostructures, terahertz plasmas), to emerging device technologies (embedded magnetic memories, spin lasers, and biocompatible microelectronics). An ideal book for microelectronics professionals and students alike, this volume of Future Trends in Microelectronics: Identifies the direction in which microelectronics is headed, enabling readers to move forward with research in an informed, efficient, and profitable manner Includes twenty-nine contributor chapters by international authorities from leading universities, major semiconductor companies, and government laboratories Provides a unified, cohesive exploration of various trends in microelectronics, looking to future opportunities, rather than past successes
Download or read book Optimization of Interdigitated Back Contact Silicon Heterojunction Solar Cells by Two dimensional Numerical Simulation written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, two-dimensional (2D) simulation of interdigitated back contact silicon heterojunction (IBC-SHJ) solar cells is presented using Sentaurus Device, a software package of Synopsys TCAD. A model is established incorporating a distribution of trap states of amorphous-silicon material and thermionic emission across the amorphous-silicon / crystalline-silicon heterointerface. The 2D nature of IBC-SHJ device is evaluated and current density-voltage (J-V) curves are generated. Optimization of IBC-SHJ solar cells is then discussed through simulation. It is shown that the open circuit voltage (VOC) and short circuit current density (JSC) of IBC-SHJ solar cells increase with decreasing front surface recombination velocity. The JSC improves further with the increase of relative coverage of p-type emitter contacts, which is explained by the simulated and measured position dependent laser beam induced current (LBIC) line scan. The S-shaped J-V curves with low fill factor (FF) observed in experiments are also simulated, and three methods to improve FF by modifying the intrinsic a-Si buffer layer are suggested: (i) decreased thickness, (ii) increased conductivity, and (iii) reduced band gap. With all these optimizations, an efficiency of 26% for IBC-SHJ solar cells is potentially achievable.
Download or read book Decreased Emitter Sheet Resistivity Loss in High efficiency Silicon Solar Cells written by Armin G. Aberle and published by . This book was released on 1993 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "State-of-the-art two-dimensional (2D) numerical semiconductor device simulation tools are applied to silicon solar cells of practical dimensions in order to investigate the 2D-effects arising from ohmic voltage drops in cell emitters due to finite finger spacings. The 2D-simulations show that for typical finger spacings of high efficiency silicon solar cells the minority carrier flow in the base deviates strongly from the purely linear flow assumed by one-dimensional theory. Compared to conventional 1D-theory, this 2D-effect significantly reduces the impact of emitter sheet losses on solar cell efficiency and leads to an increased optimum finger spacing and improved cell performance. The effect is particularly pronounced for silicon concentrator cells. The 2D-simulations presented in this work considerably improve the general understanding of internal device physics of high efficiency silicon solar cells and reveal the limits of one-dimensional models for the simulation of these devices."
Download or read book Introduction and Regional Analyses of the Pennsylvanian System written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Silicon Photonics written by Laurent Vivien and published by Taylor & Francis. This book was released on 2016-04-19 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of integrated silicon photonic circuits has recently been driven by the Internet and the push for high bandwidth as well as the need to reduce power dissipation induced by high data-rate signal transmission. To reach these goals, efficient passive and active silicon photonic devices, including waveguide, modulators, photodetectors,
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.
Download or read book International Assessment of Research and Development in Simulation based Engineering and Science written by Sharon C. Glotzer and published by World Scientific. This book was released on 2011 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation-Based Engineering and Science (SBE&S) cuts across disciplines, showing tremendous promise in areas from storm prediction and climate modeling to understanding the brain and the behavior of numerous other complex systems.In this groundbreaking volume, nine distinguished leaders assess the latest research trends, as a result of 52 site visits in Europe and Asia and hundreds of hours of expert interviews, and discuss the implications of their findings for the US government.The authors conclude that while the US remains the quantitative leader in SBE&S research and development, it is very much in danger of losing that edge to Europe and Asia.Commissioned by the National Science Foundation, this multifaceted study will capture the attention of Fortune 500 companies and policymakers.Distinguished contributors: Sharon C Goltzer, University of Michigan, Ann Arbor, USA Sangtae Kim, Morgridge Institute for Research, USA Peter T Cummings, Vanderbilt University, USA and Oak Ridge National Laboratory, USA Abhijit Deshmukh, Texas A&M University, USA Martin Head-Gordon, University of California, Berkeley, USA George Em Karniadakis, Brown University, USA Linda Petzold, University of California, Santa Barbara, USA Celeste Sagui, North Carolina State University, USA Masanobu Shinozuka, University of California, Irvine, USA
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.
