Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Silicon Based Heterojunction Solar Cells And Photodetectors
Download Silicon Based Heterojunction Solar Cells And Photodetectors full books in PDF, epub, and Kindle. Read online Silicon Based Heterojunction Solar Cells And Photodetectors ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Silicon Based Heterojunction Solar Cells and Photodetectors by : Zhen Gao
Download or read book Silicon Based Heterojunction Solar Cells and Photodetectors written by Zhen Gao and published by . This book was released on 2017 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar energy is one of the most important clean and renewable energy options for fossil fuel replacement. Efforts have been placed on high performance and low cost solar devices for decades. Although the targets of high performance and low cost have been achieved separately, finding the sweet point between the two is challenging. Si based heterojunction device is one of the most promising technologies for achieving high performance and low cost at the same time. Currently, Heterojunction with Intrinsic Thin layer (HIT) solar cell is the most popular structure with intrinsic and highly doped a-Si:H thin films. It also holds the Si based single junction solar cell energy conversion efficiency record since 2014. However, two main constraints exist for such type of solar cells: 1. device performance is highly sensitive to the properties of intrinsic thin layer; any high temperature process can change the heterojunction behavior easily; 2. high cost Transparent Conductive Oxide (TCO) is included in the structure which has low temperature tolerance and therefore standard industrial metallization methods are not applicable for such devices. One possible solution to mitigate the disadvantages mentioned above is poly-Si/c-Si heterojunction structure. Poly-Si thin film is well-developed material which is much less sensitive to fabrication conditions. Poly-Si thin film fabricated by Low Pressure Chemical Vapor Deposition (LPCVD) has the advantages of relatively low thermal budget, high through put and high quality. Furthermore, the poly-Si thin film can be doped during deposition, which eliminates further high temperature diffusion or dopant activation processes. The conductivity of doped poly-Si thin film is reasonably high. Therefore, it is possible to eliminated the application of TCO layer. On one hand, bring down the material cost; on the other hand enable standard industrial metallization methods. Challenges exist on achieving high current output and high fill factor (FF) for poly-Si/c-Si heterojunction solar cells. Because, high current output requires thin poly-Si layer for better blue response, while high FF requires thick poly-Si layer for lower series resistance loss. In this research, an interface passivation layer and rapid thermal annealing process are analyzed and applied to achieve high current output and high FF at the same time. With non-textured planar solar cell, Jsc and FF of 29.37 mA/cm2 and 79.1% are achieved at the same time. Different types of Si based heterojunctions exhibit very different device behaviors. With the knowledge of Si based heterojunction analysis, the properties of Al-ZnO/Si heterojunction are analyzed in details. The superior junction properties of Al-ZnO/(n)Si over Al-ZnO/(p)Si structure are identified and explained in a systematic comparative study. The photoresponse mechanisms for Al-ZnO/Si heterojunction are explained and verified with experimental results. With the in depth understanding of Al-ZnO/(n)Si heterojunction structure, further modifications on the device are applied. Namely, thickness of Al-ZnO thin film is optimized and an interface passivation layer is applied. A high performance broadband photodetector is fabricated and presented with close to theoretical maximum responsivity for red color wavelength at self-powered mode.
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.
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 Amorphous and Crystalline Silicon Based Heterojunction Solar Cells by : J. A. Schüttauf
Download or read book Amorphous and Crystalline Silicon Based Heterojunction Solar Cells written by J. A. Schüttauf and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis N-type Silicon Based Homojunction and Heterojunction Solar Cells by : 黃昱閎
Download or read book N-type Silicon Based Homojunction and Heterojunction Solar Cells written by 黃昱閎 and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silicon Heterojunction Solar Cells: The Key Role of Heterointerfaces and Their Impact on the Performance by : Miroslav Mikolášek
Download or read book Silicon Heterojunction Solar Cells: The Key Role of Heterointerfaces and Their Impact on the Performance written by Miroslav Mikolášek and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter is dedicated to the processes linked with the collection of photo-generated carriers in silicon heterojunction (SHJ) solar cells with a focus on the key role of the amorphous silicon/crystalline silicon heterojunction. The intention is to explain the role of carrier inversion at the heterointerface and connect it with the properties of the SHJ to obtain deeper understanding of carrier transport properties and collection, which goes beyond amorphous silicon-based structures and will contribute to understanding the new emerging SHJ based on amorphous silicon oxide and metal oxide emitter layers. The study is extended by a simulation of the TCO/emitter interface with the aim to reveal the effect of parasitic Schottky barrier height on the performance of the SHJ solar cell. In addition, the simulation study of SHJ under concentrated light and varied temperatures is outlined to show the main limitations and prospects of SHJ structures for utilization under concentrated light.
Book Synopsis Heterojunction Solar Cells (a-Si/c-Si) by : Thomas Mueller
Download or read book Heterojunction Solar Cells (a-Si/c-Si) written by Thomas Mueller and published by Logos Verlag Berlin GmbH. This book was released on 2009 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of the present work is related to the optimization of heterojunction solar cells. The key roles in obtaining high efficient heterojunction solar cells are mainly the plasma enhanced chemical vapor deposition of very low defect layers, and the sufficient surface passivation of all interfaces. In heterojunction solar cells, the a-Si: H/c-Si hetero-interface is of significant importance, since the hetero-interface characteristics directly affect the junction properties and thus solar cell efficiency. In this work, the deposition and film properties of various hydrogenated amorphous silicon alloys, such as a-SiC: H, a-SiO_x: H, and muc-Si: H (standard a-Si: H is used as reference), are employed. Special attention is paid to (i) the front and back surface passivation of the bulk material by high-quality wide-gap amorphous silicon suboxides (a-SiO_x: H), and (ii) the influence of wide-gap high-quality a-Si- and muc-Si-based alloys for use as emitter and back-surface-
Book Synopsis Silicon Heterojunction Solar Cells: Analysis and Basic Understanding by : Martin Bivour
Download or read book Silicon Heterojunction Solar Cells: Analysis and Basic Understanding written by Martin Bivour and published by . This book was released on 2017-03-29 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silicon Based Thin Film Solar Cells by : Roberto Murri
Download or read book Silicon Based Thin Film Solar Cells written by Roberto Murri and published by Bentham Science Publishers. This book was released on 2013-03-20 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon Based Thin Film Solar Cells explains concepts related to technologies for silicon (Si) based photovoltaic applications. Topics in this book focus on ‘new concept’ solar cells. These kinds of cells can make photovoltaic power production an economically viable option in comparison to the bulk crystalline semiconductor technology industry. A transition from bulk crystalline Si solar cells toward thin-film technologies reduces usage of active material and introduces new concepts based on nanotechnologies. Despite its importance, the scientific development and understanding of new solar cells is not very advanced, and educational resources for specialized engineers and scientists are required. This textbook presents the fundamental scientific aspects of Si thin films growth technology, together with a clear understanding of the properties of the material and how this is employed in new generation photovoltaic solar cells. The textbook is a valuable resource for graduate students working on their theses, young researchers and all people approaching problems and fundamental aspects of advanced photovoltaic conversion.
Download or read book Solar Cells written by Majid Nayeripour and published by BoD – Books on Demand. This book was released on 2020-03-25 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume Solar Cells is a collection of reviewed and relevant research chapters offering a comprehensive overview of recent developments in the field of renewable energy. The book comprises single chapters authored by various researchers and is edited by a group of experts active in the physical sciences, engineering, and technology research areas. All chapters are complete in themselves but united under a common research study topic. This publication aims at providing a thorough overview of the latest research efforts by international authors on physical sciences, engineering, and technology, and opens new possible research paths for further novel developments.
Book Synopsis Silicon-Based Hybrid Nanoparticles by : Sabu Thomas
Download or read book Silicon-Based Hybrid Nanoparticles written by Sabu Thomas and published by Elsevier. This book was released on 2021-09-24 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon-Based Hybrid Nanoparticles: Fundamentals, Properties, and Applications focuses on the fundamental principles and promising applications of silicon-based hybrid nanoparticles in nanoelectronics, energy storage/conversion, catalysis, sensors, biomedicine, environment and imaging. This book is an important reference source for materials scientists and engineers who are seeking to understand more about the major properties and applications of silicon-based hybrid nanoparticles. As the hybridization of silicon nanoparticles with other semiconductors or metal oxides nanoparticles may exhibit superior features, when compared to lone, individual nanoparticles, this book provides the latest insights. In addition, the silicon/iron oxide hybrid nanoparticles also possess excellent fluorescence, super-paramagnetism, and biocompatibility that can be effectively used for the diagnostic imaging system in vivo. Similarly, gold-silicon nanohybrids could be used as highly efficient near-infrared hyperthermia agents for cancer cell destruction. Outlines the major thermal, electrical, optical, magnetic and toxic properties of silicon-based hybrid nanoparticles Describes major applications in energy, environmental science and catalysis Assesses the major challenges to manufacturing silicon-based nanostructured materials on an industrial scale
Book Synopsis Silicon Heterojunction Solar Cell and Crystallization of Amorphous Silicon by : Meijun Lu
Download or read book Silicon Heterojunction Solar Cell and Crystallization of Amorphous Silicon written by Meijun Lu and published by ProQuest. This book was released on 2008 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the a-Si:H is found to help to achieve high efficiency in c-Si heterojuntion solar cells, it also absorbs short wavelength (
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 17.5% P-Type Silicon Heterojunction Solar Cells with HWCVD A-Si by : M. R. Page
Download or read book 17.5% P-Type Silicon Heterojunction Solar Cells with HWCVD A-Si written by M. R. Page and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin hydrogenated amorphous silicon (a-Si:H) layers deposited by hot-wire chemical vapor deposition (HWCVD) are used as both emitters and back contacts in silicon heterojunction solar cells. Low interface recombination velocity and high open-circuit voltage are achieved by a low substrate temperature (150 deg C) intrinsic a-Si:H deposition which ensures immediate amorphous silicon deposition. This is followed by deposition of doped a-Si:H at a higher temperature (200 deg C) which appears to improve dopant activation. With an i/n a-Si:H emitter, we obtain a confirmed efficiency of 17.1% on textured p-type float-zone (FZ) silicon with a screen-printed aluminum back-surface-field (Al-BSF) contact. Employing a-Si:H as both the front emitter and the back contact, we achieve a confirmed efficiency of 17.5%, the highest reported efficiency for a p-type c-Si based heterojunction solar cell.
Book Synopsis Silicon Heterojunction Solar Cells by : Dong Xu
Download or read book Silicon Heterojunction Solar Cells written by Dong Xu and published by LAP Lambert Academic Publishing. This book was released on 2011-08 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Silicon heterojunction solar cells----Understanding and optimization of a-Si PECVD deposition" is a summary of author's research work on silicon heterojunction solar cells at Institute of Energy Conversion, University of Delaware. The author's team is the first U.S. research group that demonstrates a >18% silicon heterojunction solar cell and the first team in worldwide that demonstrates an all back contact silicon heterojunction solar cell.
Book Synopsis Semiconductor Physical Electronics by : Sheng S. Li
Download or read book Semiconductor Physical Electronics written by Sheng S. Li and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide the reader with a self-contained treatment of fundamen tal solid state and semiconductor device physics. The material presented in the text is based upon the lecture notes of a one-year graduate course sequence taught by this author for many years in the ·Department of Electrical Engineering of the University of Florida. It is intended as an introductory textbook for graduate students in electrical engineering. However, many students from other disciplines and backgrounds such as chemical engineering, materials science, and physics have also taken this course sequence, and will be interested in the material presented herein. This book may also serve as a general reference for device engineers in the semiconductor industry. The present volume covers a wide variety of topics on basic solid state physics and physical principles of various semiconductor devices. The main subjects covered include crystal structures, lattice dynamics, semiconductor statistics, energy band theory, excess carrier phenomena and recombination mechanisms, carrier transport and scattering mechanisms, optical properties, photoelectric effects, metal-semiconductor devices, the p--n junction diode, bipolar junction transistor, MOS devices, photonic devices, quantum effect devices, and high speed III-V semiconductor devices. The text presents a unified and balanced treatment of the physics of semiconductor materials and devices. It is intended to provide physicists and mat erials scientists with more device backgrounds, and device engineers with a broader knowledge of fundamental solid state physics.
Book Synopsis Silicon Heterojunction Solar Cells by : Mohamad Abad Al-Rahman
Download or read book Silicon Heterojunction Solar Cells written by Mohamad Abad Al-Rahman and published by . This book was released on 1984 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
