Download or read book Fabrication of High Quality Low Bandgap Amorphous Silicon Amorphous Silicon Germanium Alloy Solar Cells by Chemical Annealing written by Ashutosh Shyam and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Amorphous Silicon Alloys for Tandem Solar Cells written by Sigurd Wagner and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the EPRI effort to develop low-bandgap amorphous silicon-germanium alloys for a monolithic tandem solar cell.
Download or read book Improving the Stability of Amorphous Silicon Solar Cells by Chemical Annealing written by Nanlin Wang and published by . This book was released on 2006 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous silicon solar cells have been extensively studied. However, it is found that the properties of a-Si:H solar cells degrade upon light illumination, and this limits their application. Recently, it has been shown that this instability is correlated with the presence of SiH2 bonds, and a technique, namely chemical annealing, was suggested to improve the stability of a-Si:H. Although a number of results have been reported, no chemical annealed devices with good quality were reported. In this work, chemical annealing technique was studied to improve the stability of a-Si:H solar cells. It is found that when the annealing was done in hydrogen plasma, the films remained amorphous; in contrast, when in helium plasma, and the annealing time is equal or more than 20 seconds, the films became crystalline. These unusual results show that it is not necessary to have a high hydrogen dilution to obtain nanocrystalline films, and contradict the generally accepted assumption that high hydrogen dilutions are needed to crystallize the amorphous films based on the reactive etching of H ions. Instead, it might be the case that not only the reactive etching effect from the H ions, but also the ion bombardment play a role in crystallizing the amorphous films. Comparable helium plasma annealed a-Si films and non helium plasma annealed a-Si films were produced. Upon light soaking, the chemical annealed films show a much lower degradation in photoconductivity than that of non chemical annealed films. Comparable helium plasma annealed a-Si solar cells and non helium plasma annealed a-Si solar cells were prepared as well. Upon light soaking, the degradation in the most sensitive device factor, the fill factor, showed that chemical annealed devices possess a much better stability than non chemical annealed devices. FTIR data of chemical annealed films provide a much less S1H2 bond content than that of non chemical annealed films. Clearly, it indicates that chemical annealing technique leads to significant improvement in the stability of both films and devices in a-Si:H by reducing the SiH2 bond density inside. Similar results happened in hydrogen plasma annealed films and devices.
Download or read book JJAP written by and published by . This book was released on 1995 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Modeling of Graded Bandgap Amorphous Silicon germanium Solar Cells Fabricated by Plasma Enhanced Chemical Vapor Deposition written by Greg Charles Baldwin and published by . This book was released on 1994 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Symposium on Materials and New Processing Technologies for Photovoltaics written by Vijay K. Kapur and published by . This book was released on 1985 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thin Film Silicon Solar Cells written by Arvind Victor Shah and published by CRC Press. This book was released on 2010-08-19 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photovoltaic technology has now developed to the extent that it is close to fulfilling the vision of a "solar-energy world," as devices based on this technology are becoming efficient, low-cost and durable. This book provides a comprehensive treatment of thin-film silicon, a prevalent PV material, in terms of its semiconductor nature, startin
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High rate growth of hydrogenated amorphous and microcrystalline silicon for thin film silicon solar cells using dynamic very high frequency plasma enhanced chemical vapor deposition written by Thomas Zimmermann and published by Forschungszentrum Jülich. This book was released on 2013 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Efficiency Amorphous Silicon Thin Film Solar Cells written by Nowshad Amin and published by LAP Lambert Academic Publishing. This book was released on 2014-06-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conversion efficiency of a solar cell can substantially be increased by improved material properties and associated designs. In this book, it has been shown that how the parametric optimization can lead to successful design of amorphous silicon thin film solar cells by using a software called AMPS-1D (Analysis of Microelectronic and Photonic Structures) prior to fabrication. Solar cells of single junction based on hydrogenated amorphous (a-Si: H) have been analyzed by using AMPS-1D simulator. The efficiency of single junction a-Si: H can be achieved as high as over 19% after parametric optimization in the simulation. Therefore, the numerically designed and optimized a-SiC: H/a-SiC: H-buffer/a-Si: H/a-Si: H solar cells have been fabricated by using PECVD (plasma enhanced chemical vapor deposition) where the best initial conversion efficiency of 10.02% has been achieved (Voc= 0.88 V, Jsc= 15.57 mA/cm2 and FF= 0.73) as one of the highest recorded efficiency to
Download or read book Japanese Journal of Applied Physics written by and published by . This book was released on 1995 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amorphous Silicon Alloy Research written by and published by . This book was released on 1986 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amorphous and Microcrystalline Silicon Applied in Very Thin Tandem Solar Cells written by Sandra Schicho and published by Forschungszentrum Jülich. This book was released on 2011 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Annealing of Amorphous Poly written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preliminary design proposed for the microelectronics materials processing equipment is presented. An overall mission profile, description of all processing steps, analysis methods and measurement techniques, data acquisition and storage, and a preview of the experimental hardware are included. The goal of the project is to investigate the viability of material processing of semiconductor microelectronics materials in a micro-gravity environment. The two key processes are examined: (1) Rapid Thermal Annealing (RTA) of semiconductor thin films and damaged solar cells, and (2) thin film deposition using a filament evaporator. The RTA process will be used to obtain higher quality crystalline properties from amorphous/poly-silicon films. RTA methods can also be used to repair radiation-damaged solar cells. On earth this technique is commonly used to anneal semiconductor films after ion-implantation. The damage to the crystal lattice is similar to the defects found in solar cells which have been exposed to high-energy particle bombardment. Cole, Eric E. Unspecified Center NAG5-1294...
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bandgap Engineering of Amorphous Silicon germanium Alloys written by Joao Pedro Conde and published by . This book was released on 1989 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
