Download or read book Propri t s structurales et optiques du silicium poreux et application aux cellules photovolta ques written by Sylvia Strehlke and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure et propri t s optiques et lectriques de nitrure de silicium obtenu par CVD assist par plasma written by Hicham Charifi and published by . This book was released on 2008 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse, qui est inscrit dans le cadre d’un projet national de recherche appliqué à vocation industrielle intitulé ́PHARE ́, a pour but de mieux appréhender les propriétés optiques, structurales et de passivation des couches de nitrure de silicium SiN:H élaborées par un réacteur prototype ́PECVD ́ de la société ́Roth & Rau ́ en fonction de ses différents paramètres technologiques afin de les optimiser en vue de leur utilisation pour des cellules photovoltaïques. Nous avons pu élaborer une large gamme d’indice de réfraction (1,9
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 Epitaxie en phase vapeur de silicium sur silicium m soporeux pour report sur substrats conomiques et application photovolta que bas co t written by Sébastien Quoizola and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: La croissance de l'industrie photovoltaïque est aujourd'hui estimée à 15% par an, atteignant 530 MWc en 2002. L'essentiel de la production se base sur l'utilisation du silicium cristallin mais la croissance se heurte au problème du prix de revient de la cellule photovoltaïque. Ainsi, pour répondre aux objectifs qui fixent à 3000 MWc la production mondiale en 2010, une diminution du prix de revient du watt crête de 2,5 à 1 Euro/Wc s'avère nécessaire. Pour cela, réduire la consommation de matériau silicium (40% du coût du produit fini) par watt crête produit représente une solution très intéressante. Ce travail s'inscrit dans le cadre du projet SUCCES (SUbstrats bas Coûts, report de Couches monocristallines et Epitaxie pour une filière Silicium photovoltaïque en couches) qui vise à transférer des films minces de silicium monocristallin (50 æm) sur des substrats économiques. Ces derniers assurent le maintien mécanique de la cellule photovoltaïque et l'emploi de silicium monocristallin permet de conserver un bon rendement avec une épaisseur réduite de la couche active. Cette technologie s'appuie sur l'utilisation d'une couche sacrificielle en silicium mésoporeux sur laquelle est épitaxiée la couche mince de silicium monocristallin. On réalise la cellule photovoltaïque, avant de détacher le dispositif qui est ensuite transféré sur un substrat faible coût. Le substrat silicium de départ peut alors être réutilisé. L'élaboration de la couche mince de silicium monocristallin est réalisée par épitaxie en phase vapeur (VPE) à 1100ʿC sous pression atmosphérique. La croissance cristalline s'effectue dans un bâti d'épitaxie que nous avons installé, modifié et qualifié afin d'en optimiser les paramètres comme la concentration en gaz précurseur dichlorosilane SiH2Cl2 ou l'ajout de gaz dopant diborane B2H6. L'étude des propriétés structurales et électriques des épitaxies sur silicium massif a permis de valider la qualité de nos couches. La zone sacrificielle, élaborée par anodisation électrochimique, est constituée d'une bi-couche de silicium mésoporeux : une couche de faible porosité (20%) surmontant une couche de forte porosité (60%). Les caractéristiques du silicium poreux sont déterminées par la densité de courant et la concentration en acide fluorhydrique utilisées au cours de l'anodisation. Le recuit haute température sous hydrogène de la bi-couche provoque sa modification structurale qui se traduit par une coalescence des pores de la couche de faible porosité alors que les pores de la couche de forte porosité voient leur taille augmentée. Cette modification structurale autorise l'épitaxie d'une couche de silicium monocristallin puis le décrochage de la couche épitaxiée. Les caractéristiques satisfaisantes des couches monocristallines épitaxiées sur silicium poreux nous ont alors permis la réalisation de cellules photovoltaïques en couche mince, dont l'architecture est une structure monoface à contacts interdigités.
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Download or read book N Heterocyclic Carbenes written by Silvia Diez-Gonzalez and published by Royal Society of Chemistry. This book was released on 2016-11-04 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: In less than 20 years N-heterocyclic carbenes (NHCs) have become well-established ancillary ligands for the preparation of transition metal-based catalysts. This is mainly due to the fact that NHCs tend to bind strongly to metal centres, avoiding the need of excess ligand in catalytic reactions. Also, NHC‒metal complexes are often insensitive to air and moisture, and have proven remarkably resistant to oxidation. This book showcases the wide variety of applications of NHCs in different chemistry fields beyond being simple phosphine mimics. This second edition has been updated throughout, and now includes a new chapter on NHC‒main group element complexes. It covers the synthesis of NHC ligands and their corresponding metal complexes, as well as their bonding and stereoelectronic properties and applications in catalysis. This is complemented by related topics such as organocatalysis and biologically active complexes. Written for organic and inorganic chemists, this book is ideal for postgraduates, researchers and industrialists.
Download or read book Phosphorus Compounds written by Maurizio Peruzzini and published by Springer Science & Business Media. This book was released on 2011-06-10 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each chapter of Phosphorus Compounds: Advanced Tools in Catalysis and Material Sciences have been carefully selected by the editors in order to represent a state-of-the-art overview of how phosphorus chemistry can provide solutions in various fields of applications. The editors have assembled an international array of world-renowned scientists and each chapter is written by experts in the fields of synthetic chemistry, homogeneous catalysis, dendrimers, theoretical calculations, materials science, and medicinal chemistry with a special focus on the chemistry of phosphorus compounds. Phosphorus Compounds: Advanced Tools in Catalysis and Material Sciences is of interest to a general readership ranging from advanced university course students to experts in academia and industry.
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
Download or read book Physical Properties of Amorphous Materials written by David Adler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.
Download or read book Unsteady Transonic Flow written by Mårten T. Landahl and published by Courier Dover Publications. This book was released on 2019-04-17 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic monograph on unsteady transonic flow — the flow of air encountered at speeds at or near the speed of sound — is of continuing interest to students and professionals in aerodynamics, fluid dynamics, and other areas of applied mathematics. After a brief Introduction, Swedish physicist Mårten T. Landahl presents a chapter in which the two-dimensional solution is derived, succeeded by a discussion of its relation to the subsonic and supersonic solutions. Three chapters on low aspect ratio configurations follow, covering triangular wings and similar planforms with curved leading edges, rectangular wings, and cropped delta wings, and low aspect ratio wing-body combinations. The treatment concludes with a consideration of the experimental determination of air forces on oscillating wings at transonic speeds.
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 Magic Bullets to Conquer Malaria written by Irwin W. Sherman and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear, concise discourse of 300 years of malarial drug research. Serves as a resource for microbiologists, parasitologists, pharmacologists, medicinal chemists, biochemists, physicians, and drug researchers.
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 The Privileged Pincer Metal Platform Coordination Chemistry Applications written by Gerard van Koten and published by Springer. This book was released on 2015-08-27 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
