Download or read book Etude et int gration de mat riaux avanc s pour la passivation face arri re de cellules photovolta ques minces written by Lotfi Bounaas and published by . This book was released on 2014 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif d'amélioration des performances de cellules solaires sur des substrats de silicium cristallin de plus en plus en minces (
Download or read book Passivation de surface des cellules photovolta ques en silicium cristallin written by Corina Barbos and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La réduction des recombinaisons aux surfaces des cellules solaires est un enjeu fondamental pour l'industrie photovoltaïque. La passivation des défauts électriques en surface peut être obtenue par la formation de liaisons chimiques ou par l'apport de charges électriques capables de repousser un type de porteurs. Ces effets peuvent être obtenus grâce à des couches minces fonctionnalisées déposées sur les surfaces des matériaux qui constituent les cellules. Dans le cadre de cette thèse nous avons étudié la passivation de surface du silicium par des couches minces d'Al2O3 déposées par ALD. La caractérisation physique, optique, structurale et chimique des couches déposées a été réalisée. Une optimisation du procédé d'élaboration (nettoyage pré dépôt, paramètres de dépôt et de recuit) de couches d'alumine a été nécessaire pour répondre aux exigences de la réduction de recombinaisons de surface et obtenir des résultats de passivation optimisés. Enfin, différentes briques technologiques nécessaires à l'intégration de ces couches dans l'architecture d'une cellule solaire silicium ont été étudiées et développées.
Download or read book D veloppement de cellules photovolta ques h t rojonctions silicium et contacts en face arri re written by Thibaut Desrues and published by . This book was released on 2009 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse explore une nouvelle voie pour améliorer le rendement des cellules solaires à base de silicium cristallin. Cette nouvelle approche utilise la technologie des hétérojonctions a-Si:H / c-Si (Si-HJ) appliquée sur des structures à contacts en face arrière interdigités (IBC). Les dispositifs combinant ces deux technologies (Si-HJ IBC) peuvent théoriquement atteindre des rendements supérieurs à 25 % avec un procédé entièrement à basse température (≤ 200°C). Dans cette étude, les cellules solaires sont fabriquées sur des substrats c-Si de type n de 25 cm2. Les procédés de fabrication utilisés sont potentiellement adaptés à une industrialisation (PECVD, pulvérisation, sérigraphie, LASER, masques métalliques). Des couches a-Si:H ultra-minces (entre 5 et 30 nm) dopées sont utilisées pour réaliser les zones d’émetteur et de BSF en face arrière des cellules solaires. Des matériaux a-Si:H, a-SiNx:H, a-SiCx:H et ITO sont également étudiés pour des applications comme couches de passivation et / ou anti-reflet. Pour fabriquer les cellules Si-HJ IBC, différentes couches sont localisées à l’aide de masques métalliques structurés et alignés mécaniquement. Le plus haut rendement atteint par les dispositifs Si-HJ IBC réalisés atteint ici 12.7%. Il s’agit, à notre connaissance, du meilleur résultat obtenu au niveau mondial par ce genre de structures sur du c-Si de type n. Les performances des dispositifs expérimentaux restent principalement limitées par une faible valeur de FF. Des modélisations 2D des structures Si-HJ IBC montrent que la conception de l’émetteur et de son contact en face arrière peut entraîner des limitations à la fois sur ce FF mais également sur le Jcc. Ces phénomènes peuvent être attribués à une résistance série « distribuée » importante sur les cellules Si-HJ IBC. Différentes perspectives d’amélioration sont proposées, au niveau de la géométrie de la structure principalement. Ces optimisations devraient permettre à la fois une simplification des cellules Si-HJ IBC ainsi que l’augmentation de leur rendement.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Nanotechnology 2013 written by NSTI and published by CRC Press. This book was released on 2013-05-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NanoScience and Technology Institute (NSTI) nanotechnology conferences have built a tradition of being the most prestigious forum in the world for leading nano scientists, and Nanotech 2013 is no exception. Top nano scientists offer an up-to-date global perspective on the latest developments in nanotechnology. More than mere proceedings, these volumes cut across every scientific and engineering discipline to provide the most complete record of current accomplishments in nanotech. Volume 2 covers electronic devices, fabrication, MEMS, fluidics, and computation.
Download or read book ZnO Thin Films written by Paolo Mele and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is an n-type semiconductor with versatile applications such as optical devices in ultraviolet region, piezoelectric transducers, transparent electrode for solar cells and gas sensors. This book "ZnO Thin Films: Properties, Performance and Applications" gives a deep insight in the intriguing science of zinc oxide thin films. It is devoted to cover the most recent advances and reviews the state of the art of ZnO thin films applications involving energy harvesting, microelectronics, magnetic devices, photocatalysis, photovoltaics, optics, thermoelectricity, piezoelectricity, electrochemistry, temperature sensing. It serves as a fundamental information source on the techniques and methodologies involved in zinc oxide thin films growth, characterization, post-deposition plasma treatments and device processing. This book will be invaluable to the experts to consolidate their knowledge and provide insight and inspiration to beginners wishing to learn about zinc oxide thin films.
Download or read book Engineering Textiles written by Alexandr A. Berlin and published by CRC Press. This book was released on 2015-09-03 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides the textile science community with a forum for critical, authoritative evaluations of advances in the discipline of textile engineering. Reporting on recent advances with significant applications in textile engineering, the chapters are written by internationally recognized researchers. This book covers a multitude of important concepts and advances in the field, including: Applications of nonwovens in textile engineering; Textile waste treatment for use in emulsion rubbers; Parameters of polyhydroxybutyrate nanofibers; Preparation of amines for use in textile engineering; Progress in photovoltaic textile; New applications in nanoengineering materials in the textile industry
Download or read book Space Time Coding for Broadband Wireless Communications written by Georgios B. Giannakis and published by John Wiley & Sons. This book was released on 2007-02-26 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eine vielversprechende Technologie zur Maximierung der Bandbreiteneffizienz in der breitbandigen drahtlosen Kommunikation ist die Raum-Zeit-Kodierung. Theorie und Praxis verbindend, ist dieses Buch die erste umfassende Diskussion von Grundlagen und designorientierten Aspekten von Raum-Zeit-Codes. Single-Carrier und Multi-Carrier-Übertragungen für Einzel- und Mehrnutzerkommunikation werden behandelt.
Download or read book Electric Machines and Drives written by Miroslav Chomat and published by BoD – Books on Demand. This book was released on 2011-02-28 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this book is an important and diverse field of electric machines and drives. The twelve chapters of the book written by renowned authors, both academics and practitioners, cover a large part of the field of electric machines and drives. Various types of electric machines, including three-phase and single-phase induction machines or doubly fed machines, are addressed. Most of the chapters focus on modern control methods of induction-machine drives, such as vector and direct torque control. Among others, the book addresses sensorless control techniques, modulation strategies, parameter identification, artificial intelligence, operation under harsh or failure conditions, and modelling of electric or magnetic quantities in electric machines. Several chapters give an insight into the problem of minimizing losses in electric machines and increasing the overall energy efficiency of electric drives.
Download or read book Photovoltaic Engineering Handbook written by F Lasnier and published by CRC Press. This book was released on 1990-01-01 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Photovoltaic Engineering Handbook is the first book to look closely at the practical problems involved in evaluating and setting up a photovoltaic (PV) power system. The author's comprehensive knowledge of the subject provides a wealth of theoretical and practical insight into the different procedures and decisions that designers need to make. Unique in its coverage, the book presents technical information in a concise and simple way to enable engineers from a wide range of backgrounds to initiate, assess, analyze, and design a PV system. It is beneficial for energy planners making decisions on the most appropriate system for specific needs, PV applications engineers, and anyone confronting the practical difficulties of setting up a PV power system.
Download or read book Scientific Canadian Mechanics Magazine and Patent Office Record written by Canada. Patent Office and published by . This book was released on 1966-03 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Fire Research written by Universidade de Coimbra and published by . This book was released on 2010 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystalline Silicon Solar Cells written by Armin G. Aberle and published by . This book was released on 1999 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization Simulation and Control written by Rentsen Enkhbat and published by Springer Nature. This book was released on 2023-12-01 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers selected, peer-reviewed works presented at the 7th International Conference on Optimization, Simulation and Control, ICOSC 2022, held at the National University of Mongolia, Ulaanbaatar, June 20–22, 2022. Topics covered include (but are not limited to) mathematical programming; network, global, linear, nonlinear, parametric, stochastic, and multi-objective optimization; control theory; biomathematics; and deep and machine learning, to name a few. Held every three years since 2002, the ICOSC conference has become a traditional gathering for experienced and young researchers in optimization and control to share recent findings in these fields and discuss novel applications in myriad sectors. Researchers and graduate students in the fields of mathematics, engineering, and computer science can greatly benefit from this book, which can also be enjoyed by advanced practitioners in research laboratories and the industry. The 2022 edition of the ICOSC conference was sponsored by the Mongolian Academy of Sciences, the National University of Mongolia and the German-Mongolian Institute for Resources and Technology.
Download or read book Water Treatment Handbook written by and published by . This book was released on 2007 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
