Semiconducting And Metallic Polymers
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Semiconducting And Metallic Polymers
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Author : Alan J. Heeger
language : en
Publisher: OUP Oxford
Release Date : 2010-07-29
Semiconducting And Metallic Polymers written by Alan J. Heeger and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-29 with Science categories.
The unique properties of conducting and semiconducting (conjugated) polymers make them one of the most attractive areas of interdisciplinary materials science and technology. Written by a pioneer in the field, this book is the first aimed at teaching graduate students, postdoctoral scientists, and specialists in industry about this exciting field.
Semiconducting And Metallic Covalent Polymers Ch X And Its Derivatives
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Author :
language : en
Publisher:
Release Date : 1980
Semiconducting And Metallic Covalent Polymers Ch X And Its Derivatives written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
POLYACETYLENE, (CH)x, is the simplest possible conjugated organic polymer and is therefore of special fundamental interest. It can be prepared in the form of lustrous, silvery, flexible, polycrystalline films having any desired cis/trans content by catalytic polymerization of gaseous acetylene, C2H2. The cis-rich films can be stretched easily at room temperature in excess of three times their original length with concomitant partial alignment of the (CH)x fibrils. Dark red gels of toluene in (CH)x may be prepared using a lower catalyst concentration. Highly porous, very low density, 'foam-like' (CH)x can be obtained from these gels. Both cis- and trans-(CH)x are p-type semiconductors which can be treated with a variety of p- or n-type dopants with concomitant increase in conductivity to give a series of semiconductors and ultimately, 'organic metals'. This report will be directed primarily towards a description of the more chemically oriented aspects of (CH)x and its derivatives. (Author).
Semiconducting Polymers
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Author : Bing R. Hsieh
language : en
Publisher:
Release Date : 1999-09-30
Semiconducting Polymers written by Bing R. Hsieh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-09-30 with Science categories.
This book examines the most recent developments in electronic conductive polymers. Topics include properties, applications, synthesis, processing and device fabrication.
Semiconducting Polymers
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Author : Georges Hadziioannou
language : en
Publisher: John Wiley & Sons
Release Date : 2006-12-15
Semiconducting Polymers written by Georges Hadziioannou and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-12-15 with Technology & Engineering categories.
The field of semiconducting polymers has attracted many researchers from a diversity of disciplines. Printed circuitry, flexible electronics and displays are already migrating from laboratory successes to commercial applications, but even now fundamental knowledge is deficient concerning some of the basic phenomena that so markedly influence a device's usefulness and competitiveness. This two-volume handbook describes the various approaches to doped and undoped semiconducting polymers taken with the aim to provide vital understanding of how to control the properties of these fascinating organic materials. Prominent researchers from the fields of synthetic chemistry, physical chemistry, engineering, computational chemistry, theoretical physics, and applied physics cover all aspects from compounds to devices. Since the first edition was published in 2000, significant findings and successes have been achieved in the field, and especially handheld electronic gadgets have become billion-dollar markets that promise a fertile application ground for flexible, lighter and disposable alternatives to classic silicon circuitry. The second edition brings readers up-to-date on cutting edge research in this field.
Conjugated Conducting Polymers
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Author : Helmut Kiess
language : en
Publisher:
Release Date : 1992-07-09
Conjugated Conducting Polymers written by Helmut Kiess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-07-09 with categories.
Conjugated Conducting Polymers
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Author : Helmut Kiess
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Conjugated Conducting Polymers written by Helmut Kiess and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
This book reviews the current understanding of electronic, optical and magnetic properties of conjugated polymers in both the semiconducting and metallic states. It introduces in particular novel phenomena and concepts in these quasi one-dimensional materials that differ from the well-established concepts valid for crystalline semiconductors. After a brief introductory chapter, the second chapter presents basic theore tical concepts and treats in detail the various models for n-conjugated polymers and the computational methods required to derive observable quantities. Specific spatially localized structures, often referred to as solitons, polarons and bipolarons, result naturally from the interaction between n-electrons and lattice displacements. For a semi-quantitative understanding of the various measure ments, electron-electron interactions have to be incorporated in the models; this in turn makes the calculations rather complicated. The third chapter is devoted to the electrical properties of these materials. The high metallic conductivity achieved by doping gave rise to the expression conducting polymers, which is often used for such materials even when they are in their semiconducting or insulating state. Although conductivity is one of the most important features, the reader will learn how difficult it is to draw definite conclusions about the nature of the charge carriers and the microscopic transport mechanism solely from electrical measurements. Optical properties are discussed in the fourth chapter.
Organic Semiconducting Polymers
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Author : J. E. Katon
language : en
Publisher:
Release Date : 1968
Organic Semiconducting Polymers written by J. E. Katon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Technology & Engineering categories.
Optical Studies Of Conducting Polymers In Metallic And Semiconducting Doped States
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Author : Alexey V. Saprigin
language : en
Publisher:
Release Date : 2001
Optical Studies Of Conducting Polymers In Metallic And Semiconducting Doped States written by Alexey V. Saprigin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Abstract: A study of electromagnetic response was performed at direct current (DC), microwave (6.5 GHz) and optical (15-40,000 cm−1) frequencies on poly(3,4-alkylenedi-oxythiophenes) (PADOTs) doped with various dopants near the insulator-metal transition together with structural studies (X-ray diffraction). We find these materials to be inhomogeneous, i.e. to have well defined crystalline regions within amorphous media. The transport measurements indicate that the properties of PADOTs vary from insulating to metallic. The metallic state of PADOTs follows trends found previously for the metallic polyaniline and polypyrrole thus confirming the universality of the metallic state for conducting polymers. The features of this state are the positive temperature coefficient of reduced activation energy, negative dielectric response at mw and far infrared frequencies, unique frequency dependence of the dielectric function and optical conductivity. A chain-linked network of metallic grains model is used in the discussion of experimental results. Within this model the transport in metallic conducting polymers is described by three basic electronic processes: intragrain scattering, diffusive spreading within the grains and the resonance hopping between the grains. The latter process is responsible for the negative dielectric response and very long relaxation times characteristic for the metallic state of the conducting polymers.
Doping In Conjugated Polymers
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Author : Pradip Kar
language : en
Publisher: John Wiley & Sons
Release Date : 2013-08-01
Doping In Conjugated Polymers written by Pradip Kar and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-01 with Technology & Engineering categories.
An A-to-Z of doping including its definition, its importance, methods of measurement, advantages and disadvantages, properties and characteristics—and role in conjugated polymers The versatility of polymer materials is expanding because of the introduction of electro-active behavior into the characteristics of some of them. The most exciting development in this area is related to the discovery of intrinsically conductive polymers or conjugated polymers, which include such examples as polyacetylene, polyaniline, polypyrrole, and polythiophene as well as their derivatives. "Synmet" or "synthetic metal" conjugated polymers, with their metallic characteristics, including conductivity, are of special interest to researchers. An area of limitless potential and application, conjugated polymers have sparked enormous interest, beginning in 2000 when the Nobel Prize for the discovery and development of electrically conducting conjugated polymers was awarded to three scientists: Alan J. Heeger, Alan G. MacDiarmid, and Hideki Shirakawa. Conjugated polymers have a combination of properties—both metallic (conductivity) and polymeric; doping gives the conjugated polymer's semiconducting a wide range of conductivity, from insulating to low conducting. The doping process is a tested effective method for producing conducting polymers as semiconducting material, providing a substitute for inorganic semiconductors. Doping in Conjugated Polymers is the first book dedicated to the subject and offers a comprehensive A-to-Z overview. It details doping interaction, dopant types, doping techniques, and the influence of the dopant on applications. It explains how the performance of doped conjugated polymers is greatly influenced by the nature of the dopants and their level of distribution within the polymer, and shows how the electrochemical, mechanical, and optical properties of the doped conjugated polymers can be tailored by controlling the size and mobility of the dopants counter ions. The book also examines doping at the nanoscale, in particular, with carbon nanotubes. Readership The book will interest a broad range of researchers including chemists, electrochemists, biochemists, experimental and theoretical physicists, electronic and electrical engineers, polymer and materials scientists. It can also be used in both graduate and upper-level undergraduate courses on conjugated polymers and polymer technology.
Semiconducting Polymers
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Author : Marian Kryszewski
language : en
Publisher:
Release Date : 1980
Semiconducting Polymers written by Marian Kryszewski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Organic semiconductors categories.
