Download or read book REALISATION DE STRUCTURES METAL ISOLANT SEMI CONDUCTEUR ETUDE PAR SPECTROSCOPIES ELECTRONIQUES ET CARACTERISATIONS ELECTRIQUES written by Sandrine Merle and published by . This book was released on 1999 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES PERFORMANCES DES STRUCTURES METAL/ISOLANT/SEMI-CONDUCTEUR SONT CONDITIONNEES PAR LA QUALITE DE L'ISOLANT ET PAR LA MAITRISE DES PROPRIETES PHYSICO-CHIMIQUES DES INTERFACES ISOLANT/SEMI-CONDUCTEUR ET METAL/ISOLANT. LA PREMIERE PARTIE DE CE MEMOIRE EST DONC CONSACREE A L'ETUDE DES PROPRIETES DE DIFFERENTES COUCHES D'ALUMINE REALISEES SUR SUBSTRATS DE SILICIUM PAR PULVERISATION CATHODIQUE OU PAR EVAPORATION SOUS ULTRA-VIDE EN FONCTION DE DIVERS PARAMETRES EXPERIMENTAUX TELS QUE LA VITESSE D'EVAPORATION ET L'EPAISSEUR DES COUCHES DIELECTRIQUES. LA QUALITE DE CES COUCHES A ETE CONTROLEE PAR SPECTROSCOPIE DES ELECTRONS AUGER (A.E.S.), PAR SPECTROSCOPIE DES PHOTOELECTRONS SOUS EXCITATION X (X.P.S.) ET PAR CARACTERISATION ELECTRIQUE C(V). NOUS AVONS CONSTATE QU'UN CHAUFFAGE DU SUBSTRAT DURANT LE DEPOT D'ALUMINE ET DES VITESSES D'EVAPORATION TROP IMPORTANTES SEMBLENT ETRE NEFASTES A LA QUALITE DES COMPOSANTS. LA DETERMINATION DES PROPRIETES DE SURFACE DES COUCHES ISOLANTES A ETE OBTENUE PAR X.P.S. CETTE DERNIERE ETUDE EST TRES IMPORTANTE CAR LES CHANGEMENTS DE STOECHIOMETRIE, D'ORDRE ET DE STRUCTURE ELECTRONIQUE DE LA SURFACE DE L'ALUMINE VONT JOUER UN ROLE SUR LA CROISSANCE, LA MORPHOLOGIE ET LA STABILITE DU METAL DEPOSE. APRES AVOIR OPTIMISE LA QUALITE DES COUCHES DIELECTRIQUES, NOUS AVONS REALISE DES STRUCTURES M.I.S. A BASE D'INP (100). LA COMBINAISON DE L'A.E.S. ET DE MESURES ELECTRIQUES MONTRE QUE LA STABILITE DE L'INP (100), NETTOYE IONIQUEMENT, EST AMELIOREE LORSQUE LE SEMI-CONDUCTEUR EST RESTRUCTURE PAR EVAPORATION D'ATOMES D'ANTIMOINE. EN EFFET, UNE COUCHE TAMPON D'INSB EST CREEE EMPECHANT LA MIGRATION DES ATOMES DE PHOSPHORE ET D'INDIUM AU TRAVERS DE LA COUCHE D'ALUMINE. DE PLUS, LORS DE LA METALLISATION DE CES STRUCTURES, PAR EVAPORATION D'ATOMES D'OR, NOUS AVONS CONSTATE UNE AMELIORATION DES RESULTATS ELECTRIQUES LORSQUE LE DEPOT EST EFFECTUE SUR ALUMINE ENRICHIE EN ALUMINIUM.
Download or read book Propri t s lectriques des structures m tal isolant ultra mince semiconducteur written by Khalil Kassmi and published by . This book was released on 1991 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MEMOIRE CONCERNE LA CARACTERISATION PAR DES MOYENS ELECTRIQUES DE STRUCTURES MOS AYANT DES COUCHES D'OXYDE ULTRA MINCE (30-130A). NOUS NOUS SOMMES ATTACHES PLUS PARTICULIEREMENT AUX CARACTERISTIQUES ESSENTIELLES CONTROLANT LEUR UTILISATION DANS LES CIRCUITS INTEGRES MOS DONT CERTAINES TELLES LE CLAQUAGE ET LE VIEILLISSEMENT QUI SONT LES PREMIERES CAUSES DE DEFAILLANCE DES COMPOSANTS, POSENT DES PROBLEMES NON ENCORE RESOLUS. DANS CE BUT, L'ANALYSE DU COMPORTEMENT ELECTRIQUE COURANT-TENSION DE CES STRUCTURES NOUS A PERMIS DE METTRE EN EVIDENCE LA PRESENCE D'UN COURANT EN EXCES DE TYPE FOWLER-NORDHEIM A BAS CHAMP ET UN COMPORTEMENT IDEAL A FORT CHAMP. IL EST AINSI MONTRE QUE CE COURANT EN EXCES PREEXISTANT EST ASSOCIE A DES DEFAUTS LOCALISES DONT LA SURFACE EQUIVALENTE EST DE 10#-#1#3 A 10#-#8 CM#2. LE LIEN ENTRE LE CLAQUAGE ET CE COURANT A ETE MIS EN EVIDENCE. IL AFFECTE LA ZONE DE CHAMP DE CLAQUAGE INTERMEDIAIRE 6-12 MV/CM. PAR AILLEURS, LA PRESENCE D'INSTABILITE DU COURANT EN EXCES INITIAL A ETE MONTRE ET ACTUELLEMENT LA POSSIBILITE DE CARACTERISER DE FACON NON DESTRUCTIVE LA TENUE AU CLAQUAGE DES COUCHES PAR DES MESURES DE BRUIT A FAIBLE POLARISATION EST EVALUEE. L'ETUDE DE L'EVOLUTION TEMPORELLE DES PROPRIETES DE CONDUCTION SOUS INJECTION DE PORTEURS NOUS A PERMIS DE DETERMINER LES PARAMETRES CARACTERISTIQUES DU VIEILLISSEMENT. EN CE QUI CONCERNE LES LOIS ET MECANISMES DE CLAQUAGE DES STRUCTURES MOS APRES PIEGEAGE DE CHARGES, IL EST APPARU QUE CELUI-CI N'EST PAS DIRECTEMENT LIE AU PIEGEAGE GLOBAL. NOUS AVONS MONTRE QUE L'INFLUENCE DE LA NATURE ET DES CARACTERISTIQUES DIMENSIONNELLES DE LA GRILLE, EST COHERENTE AVEC LA PRISE EN COMPTE DES CONTRAINTES A L'INTERFACE OXYDE-SEMICONDUCTEUR COMME INITIATRICES PREPONDERANTES DU CLAQUAGE. ENFIN L'INFLUENCE DU RAYONNEMENT IONISANT SUR CES STRUCTURES NOUS A PERMIS DE CONFIRMER DES RESULTATS DEJA PUBLIES DANS LA LITTERATURE SUR LE STOCKAGE DE CHARGES ET LA CREATION D'ETATS DE SURFACE ET DE MONTRER QUE POUR LES EPAISSEURS INFERIEURES A 100A, LA DISTRIBUTION DE CHAMPS DE CLAQUAGE EST DEGRADEE APRES IRRADIATION
Download or read book R alisation de composants lectroniques du type m tal isolant semiconducteur MIS et caract risations associ es written by Jean-Luc PERROSSIER and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book tude d un syst me de mesures lectriques dynamiques written by Guy Valmont and published by . This book was released on 1986 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exécution des modifications matérielles et logicielles sur ce système d'une part pour s'adapter à l'étendue de la gamme de mesure habituellement rencontrées sur les structures MIS en phosphure d'indium étudiées au L.E.P.I., et d'autre part pour s'affranchir du bruit basse-fréquence qui perturbait les mesures de capacité. Ceci a conduit naturellement à étalonner le système complet, tout en montrant que la plage dans laquelle la fiabilité des résultats est assurée, couvre l'ensemble des mesures C-G-V relatives aux structures MIS-InP à faibles épaisseurs d'oxyde. A partir de cette constatation, un logiciel performant fut créé en réalisant deux objectifs : libérer le chercheur des calculs longs et fastidieux nécessaires à l'application de la méthode de Nicollian et Goetzberger, par le tracé automatique des courbes sur une table X-Y
Download or read book Outils de caract risation lectrique de structures M tal Isolant Semiconducteur pour la simulation et le contr le de qualit written by Pierre-François CALMON and published by . This book was released on 1998 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ETUDE DE LA FORMATION DE L INTERFACE METAL SEMICONDUCTEUR PAR SPECTROSCOPIE AVEC LE RAYONNEMENT SYNCHROTRON written by Giorgio Rossi and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DE LA STRUCTURE ELECTRONIQUE ET ATOMIQUE DES INTERFACES METAL-SEMICONDUCTEUR EN UTILISANT L'INTERACTION DU RAYONNEMENT SYNCHROTRON AVEC LA MATIERE. DETERMINATION DES DENSITES D'ETATS ELECTRONIQUES ET DES SECTIONS EFFICACES DE PHOTOIONISATION. ETUDE PAR ABSORPTION DE RAYONS X DE LA BANDE INTERDITE ET DE LA CRISTALLOGRAPHIE DES INTERFACES. INTERFACES SEMICONDUCTEUR (SI, GE, INP), METAUX DE TRANSITION, LANTHANIDES
Download or read book Graphene written by Wonbong Choi and published by CRC Press. This book was released on 2016-04-19 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the late 20th century, graphene-a one-atom-thick planar sheet of sp2-bonded carbon atoms densely packed in a honeycomb crystal lattice-has garnered appreciable attention as a potential next-generation electronic material due to its exceptional properties. These properties include high current density, ballistic transport, chemical inertness,
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 Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by OUP Oxford. This book was released on 2012-08-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.
Download or read book An Introduction To Plasmonics written by Olivier Pluchery and published by World Scientific. This book was released on 2023-08-28 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is a plasmon? Is it a particle, like a photon or a wave? Plasmonics stands at the frontier of condensed matter physics, which is the world of electrons, optics and of photons. Plasmonics is one of the most active fields in nanophotonics. This book begins by exploring the concepts behind waves, and the electromagnetic description of light when it interacts with metals; it dedicates every chapter thereafter to all aspects of plasmonics. In particular, the surface plasmon polariton wave is explained in full detail, as well as the localized surface plasmon resonance of metallic nanoparticles. The active research area opened by plasmonics, as well as its applications, are also briefly explained, such as advanced biosensing, subwavelength waveguiding, quantum plasmonics, nanoparticle-based cancer therapies, optical nano-antenna and high-efficiency photovoltaic cells.The book is adapted for graduate students and places a special emphasis on providing complete explanations of the fundamental concepts of plasmonics. Further, each of these concepts is illustrated with examples drawn from the most recent scientific literature. Each chapter ends with a set of exercises that will help the reader revise the concepts and go deeper into the world of plasmonics. More than 70 exercises are included.
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 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 Semiconductor Physical Electronics written by Sheng S. Li and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide the reader with a self-contained treatment of fundamen tal solid state and semiconductor device physics. The material presented in the text is based upon the lecture notes of a one-year graduate course sequence taught by this author for many years in the ·Department of Electrical Engineering of the University of Florida. It is intended as an introductory textbook for graduate students in electrical engineering. However, many students from other disciplines and backgrounds such as chemical engineering, materials science, and physics have also taken this course sequence, and will be interested in the material presented herein. This book may also serve as a general reference for device engineers in the semiconductor industry. The present volume covers a wide variety of topics on basic solid state physics and physical principles of various semiconductor devices. The main subjects covered include crystal structures, lattice dynamics, semiconductor statistics, energy band theory, excess carrier phenomena and recombination mechanisms, carrier transport and scattering mechanisms, optical properties, photoelectric effects, metal-semiconductor devices, the p--n junction diode, bipolar junction transistor, MOS devices, photonic devices, quantum effect devices, and high speed III-V semiconductor devices. The text presents a unified and balanced treatment of the physics of semiconductor materials and devices. It is intended to provide physicists and mat erials scientists with more device backgrounds, and device engineers with a broader knowledge of fundamental solid state physics.
Download or read book X Ray and Neutron Reflectivity Principles and Applications written by Jean Daillant and published by Springer Science & Business Media. This book was released on 2003-07-01 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reflection of and neutrons from surfaces has existed as an x-rays exp- imental for almost it is in the last technique fifty Nevertheless, only years. decade that these methods have become as of enormously popular probes This the surfaces and interfaces. to be due to of several appears convergence of intense different circumstances. These include the more n- availability be measured orders tron and sources that can over (so reflectivity x-ray many of and the much weaker surface diffuse can now also be magnitude scattering of thin films and studied in some the detail); growing importance multil- basic the realization of the ers in both and technology research; important which in the of surfaces and and role roughness plays properties interfaces; the of statistical models to characterize the of finally development topology its and its characterization from on roughness, dependence growth processes The of and to surface scattering experiments. ability x-rays neutro4s study four five orders of in scale of surfaces over to magnitude length regardless their and also their to ability probe environment, temperature, pressure, etc. , makes these the choice for buried interfaces often probes preferred obtaining information about the microstructure of often in statistical a global surfaces, the local This is manner to complementary imaging microscopy techniques, of such studies in the literature witnessed the veritable by explosion published the last few Thus these lectures will useful for over a resource years.
Download or read book An Introduction to Differential Manifolds written by Jacques Lafontaine and published by Springer. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
Download or read book Organic Solid State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.
Download or read book U S Research Reactors written by Battelle Memorial Institute. Columbus Laboratories and published by . This book was released on 1957 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
