Download or read book Generative Modeling and Sensitivity Analysis of Gallium Arsenide based Solar Cell Device Processes written by Maryam Molamohammadi and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Modeling and process optimization of solar cell devices is a complex procedure due to the high-dimensional parameter space. Moreover, the need for enhancing renewable energy market share is an undeniable fact. Machine learning is rapidly emerging in many fields while providing a promising toolbox for researchers to study complex problems more efficiently. Traditionally, research in materials science has involved a trial-and-error process that often requires various resources. With the help of machine learning, we can explore the high-dimensional problems with improved accuracy and efficiency and fewer user-imposed assumptions.This thesis presents the modeling and sensitivity analysis of GaAs-based (Gallium arsenide-based) solar cell device processes. We propose a unifying framework for learning a solar cell performance function while providing intuitive interpretations based on the sensitivity analysis of the cell performance with respect to the material variables. In fact, this framework would be a faster and more computationally efficient replacement for its equivalent simulator in a downstream task of sensitivity analysis and consequently design optimization. We use the conditional variational autoencoder and multilayer perceptron for the generative modeling task and Jacobian-based sensitivity indices for the sensitivity analysis task. Furthermore, in the results, we validate our modeling approach with a baseline multilayer perceptron and our sensitivity analysis method with a sampling-based sensitivity analysis approach. We further demonstrate how the sensitivity analysis can be potentially useful from the design perspective as well as interpretability of possible device underperformance"--

Download or read book Effects of Front and Bottom Texturings on Gallium Arsenide Solar Cell Characteristics written by Phaneendra Bommareddy and published by . This book was released on 2012 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Gallium Arsenide solar cells are of particular interest in many applications due to its advantages over silicon. Its high absorptivity requires a cell that is only few microns thick, compared to silicon. GaAs cells are relatively insensitive to heat and their resistance to radiation also makes the GaAs based cell preferable to Si for extra-terrestrial applications. In this research, the effects of front and bottom texturing on the GaAs solar cell were studied, in particular their effects on the fill factor, open circuit voltage and the short circuit currents were analyzed. Silvaco, an industry standard simulation suite was used for the design and analysis of the various texturing for the GaAs solar cell. In this thesis, five different cell models consisting of the un-textured cell, top, bottom, top and bottom, as well as meta-structures were considered for analysis. Using AM1.5 spectrum with the aid of beam parameter of the simulation software under 1-sun condition, Isc and Voc were obtained. The IV characteristics were plotted for all the models in the presence and absence of light, providing light and dark currents for the cell. Maximum power generated in the device was measured and the Fill Factor calculated. The texturing's were considered on the window layer and above the gold mirror layer for top and bottom texturing's respectively, with In0.5Ga0.5P and also with a combination of alternating metal dielectric slabs forming a meta structure over a gold layer on the window layer. Results for these designs showed that the performance of various GaAs solar cells with In0.5Ga0.5P texturing on the top has better device characteristics compared to other designs.

Download or read book Gallium Arsenide GaAs Solar Cell Modeling Studies written by John H. Heinbockel and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gallium Arsenide Solar Cell Production Processes and Techniques written by H. BERTRAM and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efforts to improve the yiel of large area single crystal gallium arsenide as well as supplying crystal for solar cell fabrication c ntinued. Several steps in the solar cell fabrication process, currently in use, were examined carefully in an attempt to improve cell efficience or increase the potential production rate. Con iderable attention was devote to the means for applying solder contacts to the solar cell. Studie ere made of various wafer polishing techniques and their effect on cell efficiency; the deposition of a silicon monoxide antireflection coating on wavers; the evaluation of solar cell p-n junction characteristics using pilot line cells; and solar simulation. (Aut or).

Download or read book Annual Report written by Mitsubishi Electric Corporation and published by . This book was released on 1988 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photovoltaic Solar Energy written by Angèle Reinders and published by John Wiley & Sons. This book was released on 2017-02-06 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar PV is now the third most important renewable energy source, after hydro and wind power, in terms of global installed capacity. Bringing together the expertise of international PV specialists Photovoltaic Solar Energy: From Fundamentals to Applications provides a comprehensive and up-to-date account of existing PV technologies in conjunction with an assessment of technological developments. Key features: Written by leading specialists active in concurrent developments in material sciences, solar cell research and application-driven R&D. Provides a basic knowledge base in light, photons and solar irradiance and basic functional principles of PV. Covers characterization techniques, economics and applications of PV such as silicon, thin-film and hybrid solar cells. Presents a compendium of PV technologies including: crystalline silicon technologies; chalcogenide thin film solar cells; thin-film silicon based PV technologies; organic PV and III-Vs; PV concentrator technologies; space technologies and economics, life-cycle and user aspects of PV technologies. Each chapter presents basic principles and formulas as well as major technological developments in a contemporary context with a look at future developments in this rapidly changing field of science and engineering. Ideal for industrial engineers and scientists beginning careers in PV as well as graduate students undertaking PV research and high-level undergraduate students.

Download or read book Hyperspectral Image Analysis written by Saurabh Prasad and published by Springer Nature. This book was released on 2020-04-27 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the state of the art in algorithmic approaches addressing the practical challenges that arise with hyperspectral image analysis tasks, with a focus on emerging trends in machine learning and image processing/understanding. It presents advances in deep learning, multiple instance learning, sparse representation based learning, low-dimensional manifold models, anomalous change detection, target recognition, sensor fusion and super-resolution for robust multispectral and hyperspectral image understanding. It presents research from leading international experts who have made foundational contributions in these areas. The book covers a diverse array of applications of multispectral/hyperspectral imagery in the context of these algorithms, including remote sensing, face recognition and biomedicine. This book would be particularly beneficial to graduate students and researchers who are taking advanced courses in (or are working in) the areas of image analysis, machine learning and remote sensing with multi-channel optical imagery. Researchers and professionals in academia and industry working in areas such as electrical engineering, civil and environmental engineering, geosciences and biomedical image processing, who work with multi-channel optical data will find this book useful.

Download or read book Solar Cell Technology and Applications written by A. R. Jha and published by CRC Press. This book was released on 2009-10-14 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy experts predict that wholesale electricity prices could easily rise 35 to 65 percent by 2015. Add to this the growing need for energy independence and the need to reduce carbon emissions and it is very clear that the development of low-cost renewable energy, such as solar energy, is essential for our economy and our national security. With t

Download or read book Electrical Characterization of Silicon on Insulator Materials and Devices written by Sorin Cristoloveanu and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon on Insulator is more than a technology, more than a job, and more than a venture in microelectronics; it is something different and refreshing in device physics. This book recalls the activity and enthu siasm of our SOl groups. Many contributing students have since then disappeared from the SOl horizon. Some of them believed that SOl was the great love of their scientific lives; others just considered SOl as a fantastic LEGO game for adults. We thank them all for kindly letting us imagine that we were guiding them. This book was very necessary to many people. SOl engineers will certainly be happy: indeed, if the performance of their SOl components is not always outstanding, they can now safely incriminate the relations given in the book rather than their process. Martine, Gunter, and Y. S. Chang can contemplate at last the amount of work they did with the figures. Our SOl accomplices already know how much we borrowed from their expertise and would find it indecent to have their detailed contri butions listed. Jean-Pierre and Dimitris incited the book, while sharing their experience in the reliability of floating bodies. Our families and friends now realize the SOl capability of dielectrically isolating us for about two years in a BOX. Our kids encouraged us to start writing. Our wives definitely gave us the courage to stop writing. They had a hard time fighting the symptoms of a rapidly developing SOl allergy.

Download or read book Cotton Physiology written by Jack R. Mauney and published by . This book was released on 1986 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canmaking written by Terry A. Turner and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal protectin, including both metal treatments and coating systems. affords mutual protection for both can and contents. this book is the first reference to meld the knowledge of chemical companies and canmaking companies, covering materials and processes used in both protective and decorative aspects of metal packaging. Topics include basic substrates (aluminum and steel), demands of the markets served, basic metal-forming processes, and the specific decorative and protctive needs of different packaging types, with emphasis give to the technologies most likely to be used, such as ultraviolet curing. This practical reference gives readers a backround and familiarity with terminology and technology and gives insight into why certain technologies are used over others.

Download or read book Quantum Dot Photodetectors written by Xin Tong and published by Springer Nature. This book was released on 2021-09-17 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of state-of-the-art quantum dot photodetectors, including device fabrication technologies, optical engineering/manipulation strategies, and emerging photodetectors with building blocks of novel quantum dots (e.g. perovskite) as well as their hybrid structured (e.g. 0D/2D) materials. Semiconductor quantum dots have attracted much attention due to their unique quantum confinement effect, which allows for the facile tuning of optical properties that are promising for next-generation optoelectronic applications. Among these remarkable properties are large absorption coefficient, high photosensitivity, and tunable optical spectrum from ultraviolet/visible to infrared region, all of which are very attractive and favorable for photodetection applications. The book covers both fundamental and frontier research in order to stimulate readers' interests in developing novel ideas for semiconductor photodetectors at the center of future developments in materials science, nanofabrication technology and device commercialization. The book provides a knowledge sharing platform and can be used as a reference for researchers working in the fields of photonics, materials science, and nanodevices.

Download or read book Nanofabrication written by Ampere A. Tseng and published by World Scientific. This book was released on 2008 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the devices and systems used in modern industry are becoming progressively smaller and have reached the nanoscale domain. Nanofabrication aims at building nanoscale structures, which can act as components, devices, or systems, in large quantities at potentially low cost. Nanofabrication is vital to all nanotechnology fields, especially for the realization of nanotechnology that involves the traditional areas across engineering and science. This is the first book solely dedicated to the manufacturing technology in nanoscale structures, devices, and systems and is designed to satisfy the growing demands of researchers, professionals, and graduate students. Both conventional and non-conventional fabrication technologies are introduced with emphasis on multidisciplinary principles, methodologies, and practical applications. While conventional technologies consider the emerging techniques developed for next generation lithography, non-conventional techniques include scanning probe microscopy lithography, self-assembly, and imprint lithography, as well as techniques specifically developed for making carbon tubes and molecular circuits and devices. Sample Chapter(s). Chapter 1: Atom, Molecule, and Nanocluster Manipulations for Nanostructure Fabrication Using Scanning Probe Microscopy (3,320 KB). Contents: Atomic Force Microscope Lithography (N Kawasegi et al.); Nanowire Assembly and Integration (Z Gu & D H Gracias); Extreme Ultraviolet Lithography (H Kinoshita); Electron Projection Lithography (T Miura et al.); Electron Beam Direct Writing (K Yamazaki); Electron Beam Induced Deposition (K Mitsuishi); Focused Ion Beams and Interaction with Solids (T Ishitani et al.); Nanofabrication of Nanoelectromechanical Systems (NEMS): Emerging Techniques (K L Ekinci & J Brugger); and other papers. Readership: Researchers, professionals, and graduate students in the fields of nanoengineering and nanoscience.

Download or read book Wafer Bonding written by Marin Alexe and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics include bonding-based fabrication methods of silicon-on-insulator, photonic crystals, VCSELs, SiGe-based FETs, MEMS together with hybrid integration and laser lift-off. The non-specialist will learn about the basics of wafer bonding and its various application areas, while the researcher in the field will find up-to-date information about this fast-moving area, including relevant patent information.

Download or read book Measuring National Power in the Postindustrial Age written by Ashley J. Tellis and published by Rand Corporation. This book was released on 2001 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arrival of postindustrial society has transformed the traditional bases of national power, and thus the methods used to measure the relative power of nations should be reassessed as well. Appreciating the true basis of national power requires not merely a meticulous detailing of visible military assets but also a scrutiny of larger capabilities embodied in such variables as the aptitude for innovation, the soundness of social institutions, and the quality of the knowledge base--all of which may bear upon a country's capacity to produce the one element still fundamental to international politics: effective military power. The authors reconfigure the notion of national power to accommodate a wider understanding of capability, advancing a conceptual framework that measures three distinct areas--national resources, national performance, and military capability--to help the intelligence community develop a better evaluation of a country's national power. The analysis elaborates the rationale for assessing each of these areas and offers ideas on how to measure them in tangible ways. An analyst's handbook, RAND/MR-1110/1-A, is also available.

Download or read book Dictionary of Acronyms and Technical Abbreviations written by Jakob Vlietstra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Dictionary covers information and communication technology (ICT), including hardware and software; information networks, including the Internet and the World Wide Web; automatic control; and ICT-related computer-aided fields. The Dictionary also lists abbreviated names of relevant organizations, conferences, symposia and workshops. This reference is important for all practitioners and users in the areas mentioned above, and those who consult or write technical material. This Second Edition contains 10,000 new entries, for a total of 33,000.