Download or read book DEVELOPPEMENT DES METHODES DE SPECTROSCOPIE CAPACITIVE ET APPLICATIONS A LA CARACTERISATION DE DEFAUTS D INTERFACE ET DE VOLUME DANS LES SEMICONDUCTEURS written by Franck Murray and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: CONDITIONS D'UTILISATION DE SPECTROMETRIE TRANSITOIRE DE NIVEAU PROFOND CLASSIQUE ET OPTIQUE. CAS DES ETATS D'INTERFACE ISOLANT-SEMICONDUCTEUR, EFFET DE LA DENSITE. ETUDE DES STRUCTURES MIS ET MOS. DANS LE CAS DE DEFAUTS D'IRRADIAITON PAR LES IONS LOURDS DE FORTE ENERGIE DANS LE SILICIUM, TROIS PIEGES A PORTEURS MAJORITAIRES ET SIX PIEGES A PORTEURS MINORITAIRES ONT ETE IDENTIFIES PAR SPECTROMETRIE TRANSITOIRE DE NIVEAU PROFOND NORMALE ET OPTIQUE

Download or read book Caract risation de structures MIS par spectroscopie d admittance valuation du comportement dynamique des d fauts l interface isolant semiconducteur written by Emmanuel Duval and published by . This book was released on 2001 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les défauts à l'interface isolant-semiconducteur sont étudiés sur des structures MIS d'orientation 100 par trois techniques de caractérisation électrique complémentaires : la spectroscopie de conductance G([omega]), la méthode capacitive C(V) et l'analyse de capacité assistée de rayonnements ultraviolets. L'utilité des hautes températures comme paramètre de mesure supplémentaire a été mise en évidence. La comparaison entre la méthode conductive G([omega],T) et capacitive C(V,T) désigne la première comme étant la plus performante. La spectroscopie G([omega],T) autorise la séparation des contributions des états lents et rapides. Par ailleurs, elle conduit à la détection de niveaux donneurs et accepteurs associés à la présence de défauts trivalents. Cette détection est confirmée par les mesures de capacité sous rayonnement UV. Les résultats observés en terme de densité et de section efficace de capture sont en accord avec ceux publiés à partir d'autres méthodes de caractérisation. Ce travail montre que la spectroscopie de conductance est un outil très performant pour quantifier la contribution des états lents et rapides et pour l'identification de défauts trivalents à l'interface isolant-semiconducteur.

Download or read book D veloppement des techniques de caract risation capacitives written by Boudjemaa Remaki and published by . This book was released on 1985 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book METHODES D ANALYSES DES SIGNAUX MULTI EXPONENTIELS UTILISES EN SPECTROSCOPIE ELECTRIQUE DES DEFAUTS PROFONDS DANS LES SEMICONDUCTEURS written by Auguste Le Bloa and published by . This book was released on 1986 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: METHODE DE CARACTERISATION DES DEFAUTS PROFONDS DANS LES SEMICONDUCTEURS A PARTIR DE L'ANALYSE DU TRANSITOIRE DE CAPACITE D'UNE DIODE. COMPARAISON DES METHODES DE SPECTROMETRIE TRANSITOIRE DE NIVEAU PROFOND (STNP) AUX METHODES STNP DOUBLE CORRELATION ET PHOTOCAPACITIVES. UNE NOUVELLE METHODE EST MISE EN OEUVRE QUI COMBINE LA SPECTROMETRIE TRANSITOIRE DE CAPACITE A L'AIDE D'UNE TRANSFORMEE DE FOURIER.ETUDE GAAS COMPENSE PAR L'IMPLANTATION D'OXYGENE DE SICILIUM PAR MESURE DE LA CONCENTRATION EN ELECTRONS

Download or read book ETUDE PAR SPECTROSCOPIE DE PHOTOELECTRONS DE SURFACES ET INTERFACES DE SEMI CONDUCTEURS III V PREPAREES PAR EPITAXIE PAR JETS MOLECULAIRES written by MARC.. LARIVE and published by . This book was released on 1993 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CETTE THESE, NOUS PRESENTONS QUELQUES ETUDES DE CARACTERISATION IN SITU AVEC UNE METHODE D'ANALYSE DE SURFACE (SPECTROSCOPIE DE PHOTOELECTRONS AU LABORATOIRE ET AVEC LE RAYONNEMENT SYNCHROTRON) REALISEES AU COURS DE LA CROISSANCE D'INTERFACES SEMI-CONDUCTEUR/SEMI-CONDUCTEUR OU SEMI-CONDUCTEUR/METAL. TOUT D'ABORD, UNE ETUDE SUR LES SURFACES PROPRES DE GAAS OBTENUES PAR EPITAXIE PAR JETS MOLECULAIRES POUR DIFFERENTES ORIENTATIONS ET RECONSTRUCTIONS EST EFFECTUEE. LES COMPOSANTES DE SURFACE SONT MISES EN EVIDENCE SUR LES SPECTRES DE NIVEAUX DE COEUR ET, A PARTIR D'UN MODELE SIMPLE DE REPARTITION DE CHARGES ELECTRONIQUES, RELIEES AUX DIFFERENTES RECONSTRUCTIONS ATOMIQUES DE SURFACE. NOUS PRESENTONS ENSUITE UNE ETUDE SUR LES INTERFACES NI/GAAS (100) REALISEES IN SITU. LA METALLURGIE SEMBLE LA MEME QUE POUR NI/GAAS (110) ET L'ANALYSE DES SPECTRES DE BANDE DE VALENCE ET DE NIVEAUX DE COEUR MONTRE QUE LA STOECHIOMETRIE DU COMPOSE DE REACTION VARIE AU COURS D'UN RECUIT. LA HAUTEUR DE LA BARRIERE DE SCHOTTKY FORMEE EST LA MEME SUR LES DEUX ORIENTATIONS (0,54 EV POUR UN SUBSTRAT DE TYPE P EN ACCORD AVEC LES PREDICTIONS BASEES SUR LA DIFFERENCE D'ELECTRONEGATIVITE). ENFIN, L'ANALYSE IN-SITU PAR SPECTROSCOPIE DES NIVEAUX DE COEUR GA-3D ET IN-4D, ASSOCIEE A UN MODELE D'EQUILIBRE LOCAL EN SURFACE, A PERMIS DE QUANTIFIER LE PHENOMENE DE SEGREGATION D'INDIUM AUX INTERFACE GA#1#-#XIN#XAS/GAAS (100) ET (111). UNE ENERGIE DE SEGREGATION PHENOMENOLOGIQUE PEUT ETRE DETERMINEE EXPERIMENTALEMENT A PARTIR DE NOS MESURES ET UTILISEE POUR LA PREDICTION DES PROPRIETES OPTIQUES DE PUITS QUANTIQUES GAAS/GAINAS/GAAS (100). L'INFLUENCE DE LA DIFFUSION DES ATOMES EN SURFACE COMME FACTEUR LIMITANT CINETIQUEMENT L'IMPORTANCE DE LA SEGREGATION EST DEMONTREE. ENFIN, NOUS AVONS AUSSI ETUDIE LA DISCONTINUITE DE BANDE DE VALENCE ASSOCIEE A CES HETEROJONCTIONS

Download or read book DISCUSSIONS ET MISES EN OEUVRE DES METHODES DE CARACTERISATION DES DEFAUTS DE SEMICONDUCTEURS written by ABDELLATIF.. MENKASSI and published by . This book was released on 1993 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS METTONS EN UVRE LES METHODES DE CARACTERISATION DES DEFAUTS DES SEMICONDUCTEURS A NIVEAUX D'ENERGIE DISCRETS OU A DENSITE D'ETATS G(E). CES METHODES ANALYSENT LE TRANSITOIRE DE CAPACITE D'UNE DIODE A JONCTION SILICIUM POLYCRISTALLIN-SILICIUM MONOCRISTALLIN OU D'UNE DIODE MOS DONT LA COUCHE DE SILICIUM POLYCRISTALLIN EST SITUEE ENTRE L'OXYDE ET LE SUBSTRAT DE SILICIUM MONOCRISTALLIN. NOUS RAPPELONS ET EXPOSONS LA MISE EN UVRE DES METHODES FTDLTS (FOURIER TRANSFORM DEEP LEVEL TRANSIENT SPECTROSCOPY) ET DE PROVENCHER POUR LA CARACTERISATION DES DEUX TYPES DE DEFAUTS PRECEDENTS. L'ANALYSE D'UN SIGNAL BI-EXPONENTIEL SYNTHETISE ET L'ANALYSE DE TRANSITOIRES DE CAPACITE D'UNE DIODE SCHOTTKY FAITE SUR DU GAAS IMPLANTE EN OXYGENE, MONTRE LA SUPERIORITE DE LA METHODE DE PROVENCHER SUR LA FTDLTS POUR CARACTERISER LES DEFAUTS A NIVEAUX D'ENERGIE DISCRETS. CETTE SUPERIORITE EST ENCORE VRAIE POUR DES SIGNAUX PRODUITS PAR UNE DENSITE D'ETATS REPARTIE DANS UN FAIBLE DOMAINE D'ENERGIE. MAIS C'EST LE CONTRAIRE DANS LE CAS D'UNE LARGE REPARTITION. A PARTIR DES TRANSITOIRES DE CAPACITE D'UNE JONCTION SILICIUM POLYCRISTALLIN-SILICIUM MONOCRISTALLIN, NOUS OBTENONS UNE DENSITE D'ETATS AYANT UN MAXIMUM A 0,34 EV ET UN MINIMUM A 0,26 EV AU-DESSOUS DE LA BANDE DE CONDUCTION. LA DENSITE D'ETATS G(E) DU SILICIUM POLYCRISTALLIN DE LA DIODE MOS EST DETERMINEE PAR LES METHODES FTDLTS, DE LANG ET EGALEMENT PAR LA METHODE C(V) DE DETERMINATION DE DENSITE DES ETATS D'INTERFACE QUE NOUS AVONS DEVELOPPEE. LES DENSITES OBTENUES PAR LES TROIS METHODES SONT SENSIBLEMENT LES MEMES, MAIS DIFFERENT DE LA VALEUR OBTENUE POUR LA DIODE A JONCTION. NOUS AVONS AUTOMATISE LA METHODE DE FORTUNATO POUR LA DETERMINATION DE G(E) DU SILICIUM POLYCRISTALLIN DU CANAL D'UN TRANSISTOR A EFFET DE CHAMP. DANS L'INTERVALLE 70-130 NM. LES VALEURS DE G(E) OBTENUES SONT INDEPENDANTES DE L'EPAISSEUR ET VARIENT PEU AVEC LE DOPAGE QUE DU SILICIUM POLYCRISTALLIN DU CANAL

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 Optical Properties Of Graphene written by Rolf Binder and published by World Scientific. This book was released on 2016-11-11 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive state-of-the-art overview of the optical properties of graphene. During the past decade, graphene, the most ideal and thinnest of all two-dimensional materials, has become one of the most widely studied materials. Its unique properties hold great promise to revolutionize many electronic, optical and opto-electronic devices. The book contains an introductory tutorial and 13 chapters written by experts in areas ranging from fundamental quantum mechanical properties to opto-electronic device applications of graphene.

Download or read book Science Past Science Future written by Isaac Asimov and published by Doubleday Books. This book was released on 1975 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of 43 essays on many subjects, from the various sciences to essays about society.

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 Clay containing Polymeric Nanocomposites written by L. A. Utracki and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Part 1 of a two-part set. Part 2 ISBN is 1859574823

Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.

Download or read book Alternative Fuels written by Michael F. Hordeski and published by The Fairmont Press, Inc.. This book was released on 2008 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Newly revised, the second edition of this pioneering work addresses emerging factors affecting energy production and use, including the availability and desirability of various fuels. The text provides extensive discussion on hydrogen sources, both solar and nuclear, and fuel cell technology, as well as other alternative fuels such as biomass, and wind power. It delves into cost analysis, regulatory issues, barriers to implementation, conversion and storage systems, thermodynamic efficiency, fuel chain efficiency, air emission issues, and safety. The book also covers natural gas hydrogen gas, methanol, ethanol, and steam reforming."--pub. desc.

Download or read book Nano Biophotonics written by Hiroshi Masuhara and published by Elsevier. This book was released on 2007-02-16 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third volume in the series represents the Proceedings of the 3rd International Nanophotonics Symposium, July 6-8, 2006, Icho-Kaikan, Osaka University, Osaka, Japan. Over a two-day symposium, distinguished scientists from around the world convened to discuss the latest progress in this field and the conclusions have been summarised in Nano Biophotonics: Science and Technology. The contents of this book have been compiled by invited lecturers, research members of the relevant projects/program, and some of general participants. The book has 27 chapters which are classified into 4 parts; nano bio-spectroscopy, nano bio-dynamics, nano bio-processing, and nano bio-devices.* Bridges the gap between conventional photophysics & photochemistry and nanoscience* Continuing the series that focuses on 'hot' areas of photochemistry, optics, material science and bioscience

Download or read book Quantum Theory of Finite Systems written by Jean-Paul Blaizot and published by Mit Press. This book was released on 1986 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and pedagogical account of the various methods used in the quantum theory of finite systems, including molecular, atomic, nuclear, and particle phenomena. Covering both background material and advanced topics and including nearly 200 problems, Quantum Theory of Finite Systems has been designed to serve primarily as a text and will also prove useful as a reference in research. The first of the book's four parts introduces the basic mathematical apparatus: second quantization, canonical transformations, Wick theorems and the resulting diagram expansions, and oscillator models. The second part presents mean field approximations and the recently developed path integral methods for the quantization of collective modes. Part three develops perturbation theory in terms of both time-dependent Feynman diagrams and time-independent Goldstone diagrams. A fourth part discusses variational methods based on correlated wavefunctions, including spin correlations. The approximation schemes are formulated for fermions and bosons at eigher zero or non-zero temperature. Although the formalism developed applies to both finite and infinite systems, the book stresses those aspects of the theory that are specific to the description of finite systems. Thus special attention is given to mean field approximations, the ensuing broken symmetries, and the associated collective motions such as rotations. Conversely, some specific features of systems with infinite numbers of degrees of freedom (such as the thermodynamic limit, critical phenomena, and the elimination of ultraviolet divergencies) are deliberately omitted. Jean-Paul Blaizot and Georges Ripka are associated with the Centre d'Etudes Nucleaires de Saclay.

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 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.