Understanding Microstructure and Charge Transport in Semicrystalline Polythiophenes
Understanding Microstructure and Charge Transport in Semicrystalline Polythiophenes

Author: Leslie Hendrix Jimison

Publisher: Stanford University

Published: 2011

Total Pages: 142

ISBN-13:

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Semiconducting polymers are a promising class of organic electronic materials, with the potential to have a large impact in the field of macroelectronics. In this thesis, we focus on understanding the relationship between microstructure and charge transport in semicrystalline polythiophenes. A method is presented for the measurement of complete pole figures of polymer thin films using an area detector, allowing for the first time quantitative characterization of crystalline texture and degree of crystallinity. Thin film transistors are used to measure electrical characteristics, and charge transport behavior is modeled according to the Mobility Edge (ME) model. These characterization methods are first used to investigate the effect of substrate surface treatment and thermal annealing on the microstructure of polythiophene thin films, and the effect of microstructural details on charge transport. Next, we investigate the semicrystalline microstructure in confined polythiophene films. Pole figures are used to quantify a decrease in the degree of crystallinity of films with decreasing thickness, accompanied by an improvement in crystalline texture. Next, we investigate the influence of the degree of regioregularity, molecular weight and the processing solvent on microstructure (degree of crystallinity and texture) and charge transport in high mobility P3HT thin films. Surprisingly, when processing conditions are optimized, even a polymer with moderate regioregularity can form a highly textured film with high charge carrier mobility. Finally, we use films of P3HT with engineered, anisotropic in-plane microstructure to understand the importance and mechanism of transport across grain boundaries in these semicrystalline films. Results from this study provide the first experimental evidence for the application of a percolation model for charge transport in high molecular weight semicrystalline polymer semiconductors. Understanding how characteristics of the polymer as well as details of the processing conditions can affect the film microstructure and device performance is important for future materials design and device fabrication.

Organic Flexible Electronics
Organic Flexible Electronics

Author: Piero Cosseddu

Publisher: Woodhead Publishing

Published: 2020-09-29

Total Pages: 666

ISBN-13: 012818891X

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Organic Electronics is a novel field of electronics that has gained an incredible attention over the past few decades. New materials, device architectures and applications have been continuously introduced by the academic and also industrial communities, and novel topics have raised strong interest in such communities, as molecular doping, thermoelectrics, bioelectronics and many others.Organic Flexible Electronics is mainly divided into three sections. The first part is focused on the fundamentals of organic electronics, such as charge transport models in these systems and new approaches for the design and synthesis of novel molecules. The first section addresses the main challenges that are still open in this field, including the important role of interfaces for achieving high-performing devices or the novel approaches employed for improving reliability issues.The second part discusses the most innovative devices which have been developed in recent years, such as devices for energy harvesting, flexible batteries, high frequency circuits, and flexible devices for tattoo electronics and bioelectronics.Finally the book reviews the most important applications moving from more standard flexible back panels to wearable and textile electronics and more futuristic applications like ingestible systems. - Reviews the fundamental properties and methods for optimizing organic electronic materials including chemical doping and techniques to address stability issues - Discusses the most promising organic electronic devices for energy, electronics, and biomedical applications - Addresses key applications of organic electronic devices in imagers, wearable electronics, bioelectronics

Conjugated Polymers
Conjugated Polymers

Author: John R. Reynolds

Publisher: CRC Press

Published: 2019-03-25

Total Pages: 847

ISBN-13: 1315159295

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This book covers properties, processing, and applications of conducting polymers. It discusses properties and characterization, including photophysics and transport. It then moves to processing and morphology of conducting polymers, covering such topics as printing, thermal processing, morphology evolution, conducting polymer composites, thin films

Advances in Heterocyclic Chemistry
Advances in Heterocyclic Chemistry

Author:

Publisher: Academic Press

Published: 2015-08-12

Total Pages: 387

ISBN-13: 0128028742

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Advances in Heterocyclic Chemistry is the definitive series in the field—one of great importance to organic chemists, polymer chemists, and many biological scientists. Because biology and organic chemistry increasingly intersect, the associated nomenclature also is being used more frequently in explanations. Written by established authorities in the field from around the world, this comprehensive review combines descriptive synthetic chemistry and mechanistic insight to yield an understanding of how chemistry drives the preparation and useful properties of heterocyclic compounds. - Considered the definitive serial in the field of heterocyclic chemistry - Serves as the go-to reference for organic chemists, polymer chemists, and many biological scientists - Provides the latest comprehensive reviews written by established authorities in the field - Combines descriptive synthetic chemistry and mechanistic insight to enhance understanding of how chemistry drives the preparation and useful properties of heterocyclic compounds

P3HT Revisited – From Molecular Scale to Solar Cell Devices
P3HT Revisited – From Molecular Scale to Solar Cell Devices

Author: Sabine Ludwigs

Publisher: Springer

Published: 2014-11-13

Total Pages: 239

ISBN-13: 366245145X

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The series Advances in Polymer Science presents critical reviews of the present and future trends in polymer and biopolymer science. It covers all areas of research in polymer and biopolymer science including chemistry, physical chemistry, physics, material science. The thematic volumes are addressed to scientists, whether at universities or in industry, who wish to keep abreast of the important advances in the covered topics. Advances in Polymer Science enjoys a longstanding tradition and good reputation in its community. Each volume is dedicated to a current topic, and each review critically surveys one aspect of that topic, to place it within the context of the volume. The volumes typically summarize the significant developments of the last 5 to 10 years and discuss them critically, presenting selected examples, explaining and illustrating the important principles, and bringing together many important references of primary literature. On that basis, future research directions in the area can be discussed. Advances in Polymer Science volumes thus are important references for every polymer scientist, as well as for other scientists interested in polymer science - as an introduction to a neighboring field, or as a compilation of detailed information for the specialist. Review articles for the individual volumes are invited by the volume editors. Single contributions can be specially commissioned. Readership: Polymer scientists, or scientists in related fields interested in polymer and biopolymer science, at universities or in industry, graduate students

Organic Electronics
Organic Electronics

Author: Fabio Cicoira

Publisher: John Wiley & Sons

Published: 2013-07-17

Total Pages: 441

ISBN-13: 3527650989

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An overview of the tremendous potential of organic electronics, concentrating on those emerging topics and technologies that will form the focus of research over the next five to ten years. The young and energetic team of editors with an excellent research track record has brought together internationally renowned authors to review up-and-coming topics, some for the first time, such as organic spintronics, iontronics, light emitting transistors, organic sensors and advanced structural analysis. As a result, this book serves the needs of experienced researchers in organic electronics, graduate students and post-doctoral researchers, as well as scientists active in closely related fields, including organic chemical synthesis, thin film growth and biomaterials. Cover Figure: With kind permission of Matitaccia.

Conducting Polymers
Conducting Polymers

Author: Ram K. Gupta

Publisher: CRC Press

Published: 2022-04-19

Total Pages: 439

ISBN-13: 100056469X

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Conducting polymers are versatile materials that possess both the unique properties of polymeric materials (elastic behavior, reversible deformation, flexibility, etc.) and the ability to conduct electricity with bulk conductivities comparable to those of metals and semiconductors. Conducting Polymers: Chemistries, Properties and Biomedical Applications provides current, state-of-the-art knowledge of conducting polymers and their composites for biomedical applications. This book covers the fundamentals of conducting polymers, strategies to modify the structure of conducting polymers to make them biocompatible, and their applications in various biomedical areas such as drug/gene delivery, tissue engineering, antimicrobial activities, biosensors, etc. FEATURES Covers the state-of-the-art progress on biodegradable conducting polymers for biomedical applications Presents synthesis, characterization, and applications of conducting polymers for various biomedical research Provides the fundamentals of biodegradation mechanisms and the role of conduction in biomedical devices Offers details of novel methods and advanced technologies used in biomedical applications using conducting polymers Highlights new directions for scientists, researchers, and students to better understand the chemistry, technologies, and applications of conducting polymers This book is essential reading for all academic and industrial researchers working in the fields of materials science, polymers, nanotechnology, and biomedical technology.

Polymer Electronics
Polymer Electronics

Author: Mark Geoghegan

Publisher: OUP Oxford

Published: 2013-04-04

Total Pages: 271

ISBN-13: 0191665444

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Polymer electronics is the science behind many important new developments in technology, such as the flexible electronic display (e-ink) and many new developments in transistor technology. Solar cells, light-emitting diodes, and transistors are all areas where plastic electronics is likely to, or is already having, a serious impact on our daily lives. With polymer transistors and light-emitting diodes now being commercialised, there is a clear need for a pedagogic text that discusses the subject in a clear and concise fashion suitable for senior undergraduate and graduate students. The content builds on what has been learnt in an elementary (core) course in solid state physics and electronic behaviour, but care has been taken to ensure that important aspects such as the synthesis of these polymers are not overlooked. The chemistry is treated in a manner appropriate to students of physics. Polymer Electronics presents a thorough discussion of the physics and chemistry behind this new and important area of science, appealing to all physical scientists with an interest in the field.

Semiconducting Polymer Composites
Semiconducting Polymer Composites

Author: Xiaoniu Yang

Publisher: John Wiley & Sons

Published: 2012-10-05

Total Pages: 553

ISBN-13: 3527648704

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The first part of Semiconducting Polymer Composites describes the principles and concepts of semiconducting polymer composites in general, addressing electrical conductivity, energy alignment at interfaces, morphology, energy transfer, percolation theory and processing techniques. In later chapters, different types of polymer composites are discussed: mixtures of semiconducting and insulating or semiconducting and semiconducting components, respectively. These composites are suitable for a variety of applications that are presented in detail, including transistors and solar cells, sensors and detectors, diodes and lasers as well as anti-corrosive and anti-static surface coatings.

Semiconducting Polymers
Semiconducting Polymers

Author: Georges Hadziioannou

Publisher: John Wiley & Sons

Published: 2006-12-15

Total Pages: 786

ISBN-13: 3527312714

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Halbleitende Polymere sind ein faszinierendes interdisziplinäres Forschungsgebiet, das kurz vor dem anwendungstechnischen Durchbruch steht. Insbesondere für neue Komponenten in der Photonik und Optoelektronik bieten diese Materialien ein enormes Potential. Dieses zweibändige Handbuch mit Beiträgen herausragender Experten aus den Feldern Organische und Physikalische Chemie, Festkörperphysik bis hin zur Verfahrenstechnik, beschreibt detailliert die Grundlagen, die zum Verständnis und zur Kontrolle dieser faszinierenden Materialien notwendig sind.