Download or read book ETUDES DE SEMICONDUCTEURS ORGANIQUES DOPES written by MOHAMMED.. MESSAOUDI and published by . This book was released on 1984 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DE CARACTERISTIQUE COURANT TENSION METTANT EN EVIDENCE UNE CONDUCTIVITE PAR SAUT DANS CS::(2)TCNQ::(3) DOPE A L'ANTHRACENE. UN PROCEDE D'ELABORATION DE COUCHES MINCES A ETE MIS AU POINT. DES EXPERIENCES DE PHOTOLUMINESCENCE ET DE CATHODOLUMINESCENCE ONT ETE REALISEES

Download or read book Etude des propri t s lectrom caniques de semi conducteurs organiques written by Marco Pereira and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'opinion publique est consciente que l'électronique qui nous entoure présente un coût de développement et de production important en plus d'un impact environnemental non négligeable. C'est dans le but de résoudre ces inconvénients que l'électronique organique est étudiée et développée. L'électronique organique a été introduite par la découverte de polymères conducteurs, par les prix Nobel de chimie de l'année 2000, Alan J. Heeger, Alan G. MacDiarmid et Hideki Shirakawa. Depuis lors cette technologie c'est grandement développée, on note ainsi de nos jours la commercialisation des écrans OLED (Organic Light Emitting Diode) mais aussi d'autres composants organiques comme les MEMS (Micro ElectroMechanical System), des systèmes liant l'électronique et la mécanique. Ces MEMS organiques sont de plus en plus étudiés et développés dû à une plus grande flexibilité des semi-conducteurs organiques par rapport à leurs homologues inorganiques. Cependant, même si la recherche sur la mécanique des polymères et l'électronique des semi-conducteurs organiques est avancée, l'interaction électromécanique de ces semi-conducteurs n'est que peu étudiée. Néanmoins, il est nécessaire de comprendre cette interaction pour développer l'électronique flexible de demain. L'objectif de ces travaux est donc d'approfondir les connaissances sur l'interaction électromécanique au sein des semi-conducteurs organiques et de développer des outils/méthodes facilement transposables à l'étude de nouvelles molécules. Pour mieux comprendre l'interaction entre la déformation de la structure des semi-conducteurs et leur réponse électrique, ces derniers sont fabriqués sous forme de monocristaux pour étudier un arrangement moléculaire parfait, sans défauts, dans les trois dimensions de l'espace. Ainsi donc dans un premier temps, l'influence de la structure moléculaire sur la mobilité des charges a été étudiée dans le cas du rubrène. Même s'il est majoritairement avancé que la distance intermoléculaire est la raison de la variation de mobilité dans le rubrène, il s'avère que la réponse électrique dépend en réalité d'un réarrangement moléculaire et de la variation d'une multitude de paramètres intra/intermoléculaires modifiant le couplage électronique entre molécules. Dans un deuxième temps, la réponse électromécanique de transistors, à diélectrique d'air, à base de rubrène a été étudiée. Dans ces systèmes plus complexes, plusieurs paramètres sont modifiés lors de la déformation. A l'aide du facteur de jauge, il est possible de mettre en évidence que la réponse électromécanique de ces transistors dépend majoritairement de la modification mécanique et électrique du contact entre le semi-conducteur et les électrodes. La forte amélioration de la réponse électrique des transistors a permis la fabrication de capteurs de forces capables de mesurer des forces de l'ordre de 230 nN. Finalement, les méthodes développées et utilisées lors de ces travaux ont été utilisées pour amorcer la fabrication et caractérisation électrique de transistors à base de pérovskites hybrides, dans le but d'étudier l'interaction électromécanique de ces matériaux émergents.

Download or read book Introduction l lectronique organique 1 written by Thien-Phap Nguyen and published by ISTE Group. This book was released on 2020-09-01 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grâce à leurs propriétés particulières, les semi-conducteurs organiques permettent d’élaborer des dispositifs de grande surface et à coûts réduits, ouvrant la voie aux applications souples et nomades qui remplacent avantageusement celles réalisées avec les semi-conducteurs traditionnels. Ce volume décrit les propriétés et les méthodes de dépôt des matières comme les semi-conducteurs organiques, les matériaux transparents conducteurs ou les métaux, qui sont utilisées dans la fabrication des dispositifs organiques. Les processus physiques (optiques, électriques et d’interface) qui régissent et contrôlent les mécanismes d’injection, de formation et de transport des porteurs de charge des matériaux sont étudiés et expliqués en détail. Cet ouvrage introduit les aspects fondamentaux et appliqués du domaine de l’électronique organique. Il s’adresse aux chercheurs et aux étudiants en filières universitaires ou en écoles d’ingénieurs se spécialisant en électronique, énergies et matériaux.

Download or read book tude des propri t s lectroniques des semi conducteurs tr s dop s par une m thode de fonctions de Green written by Huynh Van Công and published by . This book was released on 1972 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude des semi conducteurs organiques written by Jean-Pierre Roth and published by . This book was released on 1963 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude des semi conducteurs organiques Evolution de propri t s structurales et lectriques d un sel de l ion radical TCNQ en fonction de la temp rature written by Didier Castagne and published by . This book was released on 1975 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cavity Polaritons written by Alexey Kavokin and published by Elsevier. This book was released on 2003-11-26 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 32 of the series addresses one of the most rapidly developing research fields in physics: microcavities. Microcavities form a base for fabrication of opto-electronic devices of XXI century, in particular polariton lasers based on a new physical principle with respect to conventional lasers proposed by Einstein in 1917. This book overviews a theory of all major phenomena linked microcavities and exciton-polaritons and is oriented to the reader having no background in solid state theory as well as to the advanced readers interested in theory of exciton-polaritons in microcavities. All major experimental discoveries in the field are addressed as well.·The book is oriented to a general reader and is easy to read for a non-specialist.·Contains an overview of the most essential effects in physics of microcavities experimentally observed and theoretically predicted during the recent decade such as:. ·Bose-Einstein condensation at room temperature.·Lasers without inversion of population.·Microcavity boom: optics of the XXI century!·Frequently asked questions on microcavities and responses without formulas. ·Half-light-half-matter quasi-particles: base for the future optoelectronic devices

Download or read book Electronic Magnetic Resonance and Solid Dielectrics written by R. Servant and published by . This book was released on 1964 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optoelectronics of Molecules and Polymers written by André Moliton and published by Springer. This book was released on 2010-05-30 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optoelectronic devices are currently being developed at an extraordinary rate. Organic light-emitting diodes, photovoltaic devices and electro-optical modulators are pivotal to the future of displays, photosensors and solar cells, and communication technologies. This book details the theories underlying the mechanisms involved in the relevant organic materials and covers, at a basic level, how the organic components are made. The first part of the book introduces the fundamental theories used to describe ordered solids and goes onto detail on concepts applicable to localised energy levels. Then the methods used to determine energy levels particular to perfectly ordered molecular and macromolecular systems are discussed along with a detailed consideration of the effects of quasi-particles. The function of excitons and their transfer between two molecules is studied and, in addition, the problems associated with interfaces and charge injection into resistive media are presented. More technological aspects are covered in the second part, which details the actual methods used to fabricate devices based on organic materials, such as dry etching. The principal characterisation techniques are also highlighted. Specific attention is paid to visual displays using organic light-emitting diodes; the conversion of photons into electrical energy (the photovoltaic effect); and for communications and information technologies, the electro-optical modulation of signals.

Download or read book Canadian Journal of Chemistry written by and published by . This book was released on 1987 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photovoltaic and Photoactive Materials written by Joseph M. Marshall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this NATO Advanced Study Institute (ASI) was to present an up-to-date overview of various current areas of interest in the field of photovoltaic and related photoactive materials. This is a wide-ranging subject area, of significant commercial and environmental interest, and involves major contributions from the disciplines of physics, chemistry, materials, electrical and instrumentation engineering, commercial realisation etc. Therefore, we sought to adopt an inter disciplinary approach, bringing together recognised experts in the various fields while retaining a level of treatment accessible to those active in specific individual areas of research and development. The lecture programme commenced with overviews of the present relevance and historical development of the subject area, plus an introduction to various underlying physical principles of importance to the materials and devices to be addressed in later lectures. Building upon this, the ASI then progressed to more detailed aspects of the subject area. We were also fortunately able to obtain a contribution from Thierry Langlois d'Estaintot of the European Commission Directorate, describing present and future EC support for activities in this field. In addition, poster sessions were held throughout the meeting, to allow participants to present and discuss their current activities. These were supported by what proved to be very effective feedback sessions (special thanks to Martin Stutzmann), prior to which groups of participants enthusiastically met (often in the bar) to identify and agree topics of common interest.

Download or read book February 16 written by Görlich and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-01-19 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detailed description available for "February 16".

Download or read book Portugaliae physica written by and published by . This book was released on 1979 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemistry in Canada written by and published by . This book was released on 1975 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Bibliographic Guide to Refrigeration 1965 1968 written by Sam Stuart and published by Elsevier. This book was released on 2013-10-22 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bibliographic Guide to Refrigeration 1965-1968 is a bibliographic guide to all the documents abstracted in the International Institute of Refrigeration Bulletin during the period 1965-1968. The references include nearly 7,000 reports, articles, and communications, classified according to subjects, and followed by a listing of books. This book is divided into 10 parts and begins with a listing of references on thermodynamics, heat transfer, and other basic physical phenomena relating to refrigeration, including desiccation and measurements of temperature, humidity, and pressure. The next sections are devoted to the physics of low temperatures and cryogenics; production and distribution of cold; refrigerating plants (mainly in the food domain); and refrigerated transport and packaging. Other references deal with air conditioning and heat pumps; and industrial, biological, medical, and agricultural applications of refrigeration. The final section focuses on standards and regulations, economics and statistics, and education and trade activities in the refrigeration industry. This guide is intended to assist researchers, engineers, manufacturers, and operators who are in either constant or occasional contact with the refrigeration domain.

Download or read book Journal de physique written by and published by . This book was released on 2006 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: