Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells
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Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells
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Author : Wolfgang Rainer Fahrner
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-23
Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells written by Wolfgang Rainer Fahrner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-23 with Technology & Engineering categories.
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.
Physics And Technology Of Amorphous Crystalline Heterostructure Silicon Solar Cells
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Author : Wilfried G. J. H. M. van Sark
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-11-16
Physics And Technology Of Amorphous Crystalline Heterostructure Silicon Solar Cells written by Wilfried G. J. H. M. van Sark and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-16 with Technology & Engineering categories.
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.
Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells
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Author : Wolfgang Rainer Fahrner
language : en
Publisher:
Release Date : 2013
Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells written by Wolfgang Rainer Fahrner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Amorphous substances categories.
A Study Of Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells
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Author : Basanth Jagannathan
language : en
Publisher:
Release Date : 1995
A Study Of Amorphous Silicon Crystalline Silicon Heterojunction Solar Cells written by Basanth Jagannathan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Silicon Heterojunction Solar Cells
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Author : W.R. Fahrner
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2006-08-15
Silicon Heterojunction Solar Cells written by W.R. Fahrner and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-08-15 with Technology & Engineering categories.
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.
Physics And Technology Of Amorphous Crystalline Heterostructure Silicon Solar Cells
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Author : Wilfried G. J. H. M. van Sark
language : en
Publisher: Springer
Release Date : 2012-02-23
Physics And Technology Of Amorphous Crystalline Heterostructure Silicon Solar Cells written by Wilfried G. J. H. M. van Sark and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-23 with Technology & Engineering categories.
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.
Crystalline Silicon Heterojunction Solar Cells
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Author : Denís Pascual Sánchez
language : en
Publisher:
Release Date : 2015
Crystalline Silicon Heterojunction Solar Cells written by Denís Pascual Sánchez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
This work is a slight research on silicon heterojunction solar cells which have been of great interest recently. The aim is to span fabrication, characterization and simulation and to reach a broad but shallow knowledge about this devices. Within heterojunction solar cells, this work is particularly focused on amorphous silicon/crystalline silicon (a-Si/c-Si) heterojunction solar cells and Transition-Metal-Oxide (TMO) silicon heterojunction solar cells (TMO/c-Si). TMO started being of interest very recently because they can substitute a-Si in a solar cell lowering fabrication costs while achieving relatively good performance. Unlikely, it is not clear why it can play the same role as a-Si since they are very different materials. Therefore simulating TMO based devices is still far from being reliable. Simulations of a-Si heterojunction solar cells have been performed since it seems to be the starting point of the road to simulating TMO. The fabrication and characterization processes are almost the same for the two types of solar cell. Since the final aim is to understand TMO heterojunction solar cells, this part is dedicated to them. Three different TMOs heterojunction solar cells have been fabricated and characterized which are M oOx , W Ox and V2 O5 while the simulation has focused on a-Si. The work has been carried out collaborating with a research group from electronics department of the UPC (Universitat Politèctica de Cataunya). Silvaco ATLAS electronic device simulator has been used to reproduce the a-Si HIT (Heterojuntion with Intrinsic Thin layer) solar cell figures of merit.
High Efficiency Crystalline Silicon Solar Cells
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Author : Eun-Chel Cho
language : en
Publisher: MDPI
Release Date : 2021-01-06
High Efficiency Crystalline Silicon Solar Cells written by Eun-Chel Cho and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-06 with Technology & Engineering categories.
This book is composed of 6 papers. The first paper reports a novel technique for the selective emitter formation by controlling the surface morphology of Si wafers. Selective emitter (SE) technology has attracted renewed attention in the Si solar cell industry to achieve an improved conversion efficiency of passivated-emitter rear-contact (PERC) cells. In the second paper, the temperature dependence of the parameters was compared through the PERC of the industrial-scale solar cells. As a result of their analysis, PERC cells showed different temperature dependence for the fill factor loss as temperatures rose. The third paper reports the effects of carrier selective front contact layer and defect state of hydrogenated amorphous silicon passivation layer/n-type crystalline silicon interface. The results demonstrated the effects of band offset determined by band bending at the interface of the passivation layer and carrier selective front contact layer. In addition, the nc-SiOx: H CSFC layer not only reduces parasitic absorption loss but also has a tunneling effect and field-effect passivation. The fourth paper reports excimer laser annealing of hydrogenated amorphous silicon film for TOPCon solar cell application. This paper analyzes the crystallization of a-Si:H via excimer laser annealing (ELA) and compared this process with conventional thermal annealing. The fifth paper reports the contact mechanism between Ag–Al and Si and the change in contact resistance (Rc) by varying the firing profile. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. The sixth paper reports a silicon tandem heterojunction solar cell based on a ZnO/Cu2O subcell and a c-Si bottom subcell using electro-optical numerical modeling. The buffer layer affinity and mobility together with a low conduction band offset for the heterojunction are discussed, as well as spectral properties of the device model.
Modeling Of Amorphous Silicon Crystalline Silicon Heterojunction By Commercial Simulator
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Author : Kunal Ghosh
language : en
Publisher: ProQuest
Release Date : 2009
Modeling Of Amorphous Silicon Crystalline Silicon Heterojunction By Commercial Simulator written by Kunal Ghosh and has been published by ProQuest this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Silicon categories.
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.
Silicon Heterojunction Solar Cells The Key Role Of Heterointerfaces And Their Impact On The Performance
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Author : Miroslav Mikolášek
language : en
Publisher:
Release Date : 2017
Silicon Heterojunction Solar Cells The Key Role Of Heterointerfaces And Their Impact On The Performance written by Miroslav Mikolášek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Technology categories.
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.
