Download or read book Advanced Laser Processing Towards Solar Cells Fabrication written by Jhantu Kumar Saha and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultra-short pulse laser has the potential in selective nano-structuring of thin-films layers by adjusting the wavelength of laser radiation depending on optical properties of the thin- film and the substrate that will solve its efficiency and stability issues in a one-step process, which is a promising methodology for thin-film solar cell fabrication that are fabricated through a sequence of vapor deposition and scribing processes. The review is performed to further understand the structure of the laser modified surface and the nature of dopants and defects in the crystalline grains. Using low temperature studies, the electronic levels of the dopant and its configuration with the lattice could be probed. The review is also explored the concept of using thin films of silicon as the laser irradiation substrate and for enhanced the visible and infrared absorption of films of silicon with thicknesses of few micrometer. Although the review is made good progress studying the properties of new material and incorporation into device but there are many unanswered questions and exciting avenues of research are also explored with femtosecond laser irradiated silicon.
Download or read book Advanced Laser Processing for Industrial Solar Cell Manufacturing Alpinism written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Cells written by Ahmed Mourtada Elseman and published by BoD – Books on Demand. This book was released on 2021-09-22 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cell energy is the single most pressing issue facing humanity, with a more technologically advanced society requiring better energy resources. This book discusses technologies broadly, depending on how they capture and distribute solar energy or convert it into solar power. The major areas covered in this book are: • The theory of solar cells, which explains the conversion of light energy in photons into electric current. The theoretical studies are practical because they predict the fundamental limits of a solar cell. • The design and development of thin-film technology-based solar cells. • State of the art for bulk material applied for solar cells based on crystalline silicon (c-Si), also known as “solar grade silicon,” and emerging photovoltaics.
Download or read book Advanced Laser Processing and Photoluminescence Characterisation of High Efficiency Silicon Solar Cells written by Malcolm David Abbott and published by . This book was released on 2006 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterisation and Development of Laser Processing for High Efficiency Silicon Solar Cells written by Daniel Charles Walter and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser processing of crystalline silicon solar cells is a rapidly advancing technology, which promises reduced cost and complexity in the fabrication of high efficiency cell concepts. This thesis presents a new method of characterising the recombination properties of micrometer-scale laser processed features in crystalline silicon, which is built upon luminescence-coupled numerical device simulations. Utilising this technique, a detailed investigation is performed into dielectric laser ablation, and laser doping from aluminium- oxide dielectric films with an ultraviolet excimer laser. Spectrally-resolved models of luminescence detection are implemented into a recently developed, high speed, three-dimensional device simulator. This enhancement provides a non-contact experimental link between a silicon test structure and representative one- to three-dimensional electronic simulations. This powerful and flexible combination is shown to enhance the accuracy and throughput of device characterisation, including but not limited to localised and large-area laser processed structures. In combination with the process flexibility of laser technologies, tens to hundreds of parameter variations can be quantitatively described in a single luminescence image. The detected luminescence signal is the key input to these analyses, and its accuracy is enhanced by careful consideration of a signal smearing phenomenon in silicon CCD detectors. Quantified in terms of the point-spread function, post-processing deconvolution is shown to provide an effective first-order correction of the signal smear. The extent of the smearing in silicon luminescence imaging with silicon CCD detectors is sufficient to warrant the general avoidance of spectrally unfiltered imaging. Short pass filtering in conjunction with deconvolution is shown to provide the most effective restoration. Utilising luminescence based characterisation, a fine-grained analysis of the near-surface recombination properties of high resistivity silicon is used to observe the influence of laser induced melt cycles. A broad laser parameter space is characterised by one-dimensional device simulations of laser irradiated silicon substrates. It is shown that the rapid melt cycling of silicon does not introduce near-surface recombination activity that would significantly alter recombination above and beyond that of co-located n+ and p+ diffusions and/or local contacts. Short-wavelength UV lasers have been proposed as a more depth selective means of performing dielectric ablation, a consequence of increased optical absorption. A detailed investigation of excimer laser ablation shows that in practice, a process that has no influence on the substrate is difficult to achieve. Nonetheless, conditions are demonstrated for which dielectric ablation has no measurable influence on the near-surface recombination properties, or on the distribution of pre-existing dopant profiles. This process is translated to a high efficiency back-contact solar cell, with performance on par with conventional, damage-free photolithography. A record device efficiency of 23.5% is achieved. Laser processing for crystalline silicon photovoltaics will continue to advance in research and industry. The new method of characterisation detailed in this work will simplify future process development, while the demonstrated performance of ultraviolet laser processing is further evidence of the suitability of laser technologies for high efficiency cell fabrication.
Download or read book Laser Fabrication and Machining of Materials written by Narendra B. Dahotre and published by Springer Science & Business Media. This book was released on 2008-01-25 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental principles and physical phenomena behind laser-based fabrication and machining processes. It also gives an overview of their existing and potential applications. With laser machining an emerging area in various applications ranging from bulk machining in metal forming to micromachining and microstructuring, this book provides a link between advanced materials and advanced manufacturing techniques. The interdisciplinary approach of this text will help prepare students and researchers for the next generation of manufacturing.
Download or read book Solution Processed Organic Solar Cells written by Sayedus Salehin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Crisis present in the world. solution processing of such devices allows large scale production using roll-to-roll process and similar fabrication processes. Lasers can be used for selective ablation of different layer of such solar cells for structuring. This work aimed at fabricating flexible polymer solar cells with all layer processed from solution as well as investigating the effect of laser for structuring different layer of the solar cells fabricated. To fabricate the solar cells, well-established photoactive blends from poly-(3-hexylthiophene-2,5-diyl) and [6,6]-phenyl C61-butyric acid methyl ester (P3HT:PC61BM) was used. The solar cells were comprised of solution processed silver as cathode and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS) as anode while zinc oxide (ZnO) was used as electron transport layer. An infrared laser was used to structure different layers of the solar cells and assess the effect on the layers. For fabrication, different layers were processed by lab-scale solution-based techniques such as doctor-blading, horizontal dipping and spin coating. Processing parameters for fabricating each layer were optimized experimentally and the solar cell fabricated with optimal parameters showed reasonable power conversion efficiency. Also, the analysis of structuring different layer of solar cells using an infrared laser is presented.
Download or read book Advanced Manufacturing Techniques Using Laser Material Processing written by Akinlabi, Esther Titilayo and published by IGI Global. This book was released on 2016-04-14 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of lasers in material processing has become a useful method for transforming industrial materials into finished products. The benefits of laser material processing are vast, including increased precision, high processing speed, and dustless cutting and drilling. Advanced Manufacturing Techniques Using Laser Material Processing explores the latest methodologies for using lasers in materials manufacturing and production, the benefits of using lasers in industrial settings, as well as future outlooks for this technology. This innovative publication is an essential reference source for professionals, researchers, and graduate-level students studying manufacturing technologies and industrial engineering.
Download or read book Printable Solar Cells written by Nurdan Demirci Sankir and published by John Wiley & Sons. This book was released on 2017-04-19 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Printable Solar Cells The book brings together the recent advances, new and cutting edge materials from solution process and manufacturing techniques that are the key to making photovoltaic devices more efficient and inexpensive. Printable Solar Cells provides an overall view of the new and highly promising materials and thin film deposition techniques for printable solar cell applications. The book is organized in four parts. Organic and inorganic hybrid materials and solar cell manufacturing techniques are covered in Part I. Part II is devoted to organic materials and processing technologies like spray coating. This part also demonstrates the key features of the interface engineering for the printable organic solar cells. The main focus of Part III is the perovskite solar cells, which is a new and promising family of the photovoltaic applications. Finally, inorganic materials and solution based thin film formation methods using these materials for printable solar cell application is discussed in Part IV. Audience The book will be of interest to a multidisciplinary group of fields, in industry and academia, including physics, chemistry, materials science, biochemical engineering, optoelectronic information, photovoltaic and renewable energy engineering, electrical engineering, mechanical and manufacturing engineering.
Download or read book Advanced Materials Processing for Scalable Solar Cell Manufacturing Volume 1323 written by Loucas Tsakalakos and published by Materials Research Society. This book was released on 2011-11-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photovoltaics have received increasing attention in the last decade from the research community as well as industry. The PV market has grown at compound annual rates of 20-40%, and new technologies such as thin films based on CdTe and Cu(In,Ge)Se2 have taken a hold in the market. Tremendous research and development innovation in photovoltaics is occurring around the world. Symposium C, "Advanced Materials Processing for Scalable Solar-Cell Manufacturing," at the 2011 MRS Spring Meeting held April 25−29 in San Francisco, California, provided a forum for exploring advanced materials processing for manufacturing of solar photovoltaics, with new research highlighted by academia and industry (start-ups and large companies) alike.
Download or read book Advanced Laser Processed Silicon Solar Cells written by D. Jordan and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Material Processing written by William M. Steen and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Material Processing is an introductory book on the application of lasers to cutting, welding, and the many new processes in surface treatment. Background information on surface treatment processes is provided to give the reader a real understanding of the process mechanisms, method of application, and industrial potential. Additionally, there are sections on basic optics, theoretical modelling, automation and safety. The material presented is based upon a course Professor Steen presents to groups from British Aerospace, and to his own MSc students in laser technology. This unique combination of topics has excellent potential as university course material for undergraduate, graduate, and postgraduate studies in optoelectronics, laser processing, and advanced manufacturing. Engineers and technicians in these areas will also find the book a welcome source of information on the rapidly expanding use of industrial lasers.
Download or read book High Rate Laser Pitting Technique for Solar Cell Texturing written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High rate laser pitting technique for solar cell texturing Efficiency of crystalline silicon solar cells can be improved by creating a texture on the surface to increase optical absorption. Different techniques have been developed for texturing, with the current state-of-the-art (SOA) being wet chemical etching. The process has poor optical performance, produces surfaces that are difficult to passivate or contact and is relatively expensive due to the use of hazardous chemicals. This project shall develop an alternative process for texturing mc-Si using laser micromachining. It will have the following features compared to the current SOA texturing process: -Superior optical surfaces for reduced front-surface reflection and enhanced optical absorption in thin mc-Si substrates -Improved surface passivation -More easily integrated into advanced back-contact cell concepts -Reduced use of hazardous chemicals and waste treatment -Similar or lower cost The process is based on laser pitting. The objective is to develop and demonstrate a high rate laser pitting process which will exceed the rate of former laser texturing processes by a factor of ten. The laser and scanning technologies will be demonstrated on a laboratory scale, but will use inherently technologies that can easily be scaled to production rates. The drastic increase in process velocity is required for the process to be implemented as an in-line process in PV manufacturing. The project includes laser process development, development of advanced optical systems for beam manipulation and cell reflectivity and efficiency testing. An improvement of over 0.5% absolute in efficiency is anticipated after laser-based texturing. The surface textures will be characterized optically, and solar cells will be fabricated with the new laser texturing to ensure that the new process is compatible with high-efficiency cell processing. The result will be demonstration of a prototype process that is suitable for scale-up to a production tool and process. The developed technique will have an reducing impact on product pricing. As efficiency has a substantial impact on the economics of solar cell production due to the high material cost content; in essence, improved efficiency through cost-effective texturing reduces the material cost component since the product is priced in terms of $/W. The project is a collaboration between Fraunhofer USA, Inc. and a c-Si PV manufacturer.
Download or read book Process and Structures for Fabrication of Solar Cells with Laser Ablation Steps to Form Contact Holes written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Contact holes of solar cells are formed by laser ablation to accomodate various solar cell designs. Use of a laser to form the contact holes is facilitated by replacing films formed on the diffusion regions with a film that has substantially uniform thickness. Contact holes may be formed to deep diffusion regions to increase the laser ablation process margins. The laser configuration may be tailored to form contact holes through dielectric films of varying thickness.
Download or read book Technology Manufacturing and Grid Connection of Photovoltaic Solar Cells written by Guangyu Wang and published by John Wiley & Sons. This book was released on 2018-02-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique guide to the most important technical aspects of photovoltaic power generation with comprehensive analysis and author industry-experience Unique from other books in the area in that it explains profound theories in simple language, introduces widely used production equipment and processes for industry professionals, and explains the complete PV industry chain from material to power generation Has originated from the author’s practical industry experience, enabling the use of up-to-date information during this time of new development in the Chinese PV industry Content includes approximately 255 illustrations and 46 tables to help clarify complex theories.
Download or read book Advanced Laser Processing And Manufacturing V written by Rongshi Xiao and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Laser Processing and Manufacturing written by Society of Photo-Optical Instrumentation Engineers and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
