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Elucidation Of Chemistry Structure Function Relationships In Molecular Semiconductors For Organic Electronic Applications
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Book Synopsis Elucidation of Chemistry-Structure-Function Relationships in Molecular Semiconductors for Organic Electronic Applications by : Jeni Christine Sorli
Download or read book Elucidation of Chemistry-Structure-Function Relationships in Molecular Semiconductors for Organic Electronic Applications written by Jeni Christine Sorli and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular semiconductors are promising candidates for the active components of organic electronic devices as their optoelectronic properties can be tuned at the onset of synthesis, and they can be incorporated into lightweight, large-area, flexible devices at low costs. Yet, there are numerous challenges associated with molecular semiconductor systems and their commercial implementation, which largely stem from the structural heterogeneities present in polycrystalline thin films that strongly influence charge transport in devices. The microstructure of thin film active layers is dependent on both chemical structure and the processing conditions used. Thus, it is important to develop an understanding for the complex relationships that govern these systems. This thesis explores the development of chemistry-processing-structure-function relationships across multiple length scales in small molecule organic semiconductor systems. First, we explored the relationships between chemical structure and optoelectronic properties through targeted design of coronene derivatives for application in UV-absorbing, visibly transparent solar cells. We calculated the frontier orbital and excited state transition energies of over 350 candidate compounds and used the calculations to screen for promising molecules for synthesis and characterization. From our screening procedure, we selected and synthesized three coronene derivatives for use as donors in organic photovoltaic (OPV) active layers to produce visibly transparent OPVs, and in doing so demonstrated how integrated computational and experimental efforts can accelerate materials design. It is also important to understand how molecular semiconductors pack in the solid-state to elucidate the relationships between solid-state structure and device function. We explored the role of halogenated contorted hexabenzocoronene (cHBC) derivatives on the degradation of organic solar cells during stability testing and find that both fluorinated and chlorinated cHBCs, that start out amorphous as-deposited, crystallize during aging. The crystallization of cHBC derivatives produces gaps at the acceptor-buffer layer interface that hinder charge extraction, which results in the degradation of OPV device performance. We examined how atomistic substitution in the side group of triisopropylsilylethynylpentacene (TIPS-Pn) to produce triisopropylgermanylethynyl-pentacene (TIPGe-Pn), which maintains the size of the side group but increases its electron density, allows TIPGe-Pn to access a much broader structural phase space than TIPS-Pn. This work establishes that the solid-state packing of functionalized acenes depends on both the size of the side group and electron density, which may be tuned with simple atomistic substitutions. Finally, we explored the impact of grain boundaries on the kinetics of polymorphic transformations in a core-chlorinated naphthalene tetracarboxylic diimide. We determined that grain boundaries can lower the energy barrier by initiating polymorphic transformations. This work demonstrates the importance of grain boundaries, which are common in polycrystalline organic semiconductors, not only for their impact on charge transport but also in initiation of polymorphic transformations. Collectively, the work in this thesis highlights the importance of developing robust chemistry-processing-structure-function relationships that can guide material development. We demonstrate methodologies and illuminate concepts that will allow for further optimization and improvement to the performance and stability of organic electronics in the future.
Book Synopsis Length- and Sequence-Controlled Organic Semiconductors by : Amir Mazaheripour
Download or read book Length- and Sequence-Controlled Organic Semiconductors written by Amir Mazaheripour and published by . This book was released on 2016 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic semiconductors have shown promise not only as alternative materials for silicon- based devices, but also as a gateway to a new paradigm of printable, biocompatible, wearable, and generally ubiquitous electronics. Considerable research effort has been devoted to elucidating structure-function relationships and charge transport phenomena in organic materials at the sub-20 nm length scale, where various key device-relevant electronic processes occur. However, the construction of precisely defined model systems at these length scales, which emulate the properties of pi-stacked or single molecule organic semiconductors remains as an important unmet challenge. To address this challenge, we have developed novel methodology for constructing length- and sequence-controlled molecular wires that can self-assemble into well- defined interfaces for charge transport studies. We have characterized the electronic structure and charge transfer dynamics at these interfaces with various techniques, including electrochemistry, synchrotron-based spectroscopy, and scanning tunneling microscopy. Our findings hold broad general relevance for understanding structure-function relationships in arbitrary organic electronic materials, nanoscale charge transfer phenomena at device-relevant organic/inorganic interfaces, and electrical conductivity in biological and bioinspired systems.
Book Synopsis Multiscale Modeling of Structure-function Relationships of Organic Semiconductors by : Shi Li
Download or read book Multiscale Modeling of Structure-function Relationships of Organic Semiconductors written by Shi Li and published by . This book was released on 2020 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electronic Structure of Organic Semiconductors by : Luis Alcácer
Download or read book Electronic Structure of Organic Semiconductors written by Luis Alcácer and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Written from the perspective of an experimental chemist, this book puts together some fundamentals from chemistry, solid state physics and quantum chemistry, to help with understanding and predicting the electronic and optical properties of organic semiconductors, both polymers and small molecules. The text is intended to assist graduate students and researchers in the field of organic electronics to use theory to design more efficient materials for organic electronic devices, such as organic solar cells, light emitting diodes and field effect transistors. After addressing some basic topics in solid state physics, a comprehensive introduction to molecular orbitals and band theory leads to a description of computational methods based on Hartree-Fock and density functional theory (DFT), for predicting geometry conformations, frontier levels and energy band structures. Topological defects and transport and optical properties are then addressed, and one of the most commonly used transparent conducting polymers, PEDOT:PSS, is described in some detail as a case study." -- Prové de l'editor.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Optoelectronic Materials by : Yongfang Li
Download or read book Organic Optoelectronic Materials written by Yongfang Li and published by Springer. This book was released on 2015-05-30 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reviews the latest trends in organic optoelectronic materials. Each comprehensive chapter allows graduate students and newcomers to the field to grasp the basics, whilst also ensuring that they have the most up-to-date overview of the latest research. Topics include: organic conductors and semiconductors; conducting polymers and conjugated polymer semiconductors, as well as their applications in organic field-effect-transistors; organic light-emitting diodes; and organic photovoltaics and transparent conducting electrodes. The molecular structures, synthesis methods, physicochemical and optoelectronic properties of the organic optoelectronic materials are also introduced and described in detail. The authors also elucidate the structures and working mechanisms of organic optoelectronic devices and outline fundamental scientific problems and future research directions. This volume is invaluable to all those interested in organic optoelectronic materials.
Book Synopsis Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities by : American Chemical Society. Committee on Professional Training
Download or read book Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Area and Flexible Electronics by : Mario Caironi
Download or read book Large Area and Flexible Electronics written by Mario Caironi and published by John Wiley & Sons. This book was released on 2015-01-13 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: From materials to applications, this ready reference covers the entire value chain from fundamentals via processing right up to devices, presenting different approaches to large-area electronics, thus enabling readers to compare materials, properties and performance. Divided into two parts, the first focuses on the materials used for the electronic functionality, covering organic and inorganic semiconductors, including vacuum and solution-processed metal-oxide semiconductors, nanomembranes and nanocrystals, as well as conductors and insulators. The second part reviews the devices and applications of large-area electronics, including flexible and ultra-high-resolution displays, light-emitting transistors, organic and inorganic photovoltaics, large-area imagers and sensors, non-volatile memories and radio-frequency identification tags. With its academic and industrial viewpoints, this volume provides in-depth knowledge for experienced researchers while also serving as a first-stop resource for those entering the field.
Book Synopsis Quantum Theory of Solids by : R. E. Peierls
Download or read book Quantum Theory of Solids written by R. E. Peierls and published by Clarendon Press. This book was released on 1996-08-15 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops the subject from the basic principles of quantum mechanics. The emphasis is on a single statement of the ideas underlying the various approximations that have to be used and care is taken to separate sound arguments from conjecture. This book is written for the student of theoretical physics who wants to work in the field of solids and for the experimenter with a knowledge of quantum theory who is not content to take other people's arguments for granted. The treatment covers the electron theory of metals as well as the dynamics of crystals, including the author's work on the thermal conductivity of crystals which has been previously published in English.
Book Synopsis Visualizing Chemistry by : National Research Council
Download or read book Visualizing Chemistry written by National Research Council and published by National Academies Press. This book was released on 2006-06-01 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and engineers have long relied on the power of imaging techniques to help see objects invisible to the naked eye, and thus, to advance scientific knowledge. These experts are constantly pushing the limits of technology in pursuit of chemical imagingâ€"the ability to visualize molecular structures and chemical composition in time and space as actual events unfoldâ€"from the smallest dimension of a biological system to the widest expanse of a distant galaxy. Chemical imaging has a variety of applications for almost every facet of our daily lives, ranging from medical diagnosis and treatment to the study and design of material properties in new products. In addition to highlighting advances in chemical imaging that could have the greatest impact on critical problems in science and technology, Visualizing Chemistry reviews the current state of chemical imaging technology, identifies promising future developments and their applications, and suggests a research and educational agenda to enable breakthrough improvements.
Book Synopsis Semiconducting Polymers by : Georges Hadziioannou
Download or read book Semiconducting Polymers written by Georges Hadziioannou and published by John Wiley & Sons. This book was released on 2006-12-15 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Transparent Electronics by : Antonio Facchetti
Download or read book Transparent Electronics written by Antonio Facchetti and published by John Wiley & Sons. This book was released on 2010-03-25 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenge for producing “invisible” electronic circuitry and opto-electronic devices is that the transistor materials must be transparent to visible light yet have good carrier mobilities. This requires a special class of materials having “contra-indicated properties” because from the band structure point of view, the combination of transparency and conductivity is contradictory. Structured to strike a balance between introductory and advanced topics, this monograph juxtaposes fundamental science and technology / application issues, and essential materials characteristics versus device architecture and practical applications. The first section is devoted to fundamental materials compositions and their properties, including transparent conducting oxides, transparent oxide semiconductors, p-type wide-band-gap semiconductors, and single-wall carbon nanotubes. The second section deals with transparent electronic devices including thin-film transistors, photovoltaic cells, integrated electronic circuits, displays, sensors, solar cells, and electro-optic devices. Describing scientific fundamentals and recent breakthroughs such as the first “invisible” transistor, Transparent Electronics: From Synthesis to Applications brings together world renowned experts from both academia, national laboratories, and industry.
Book Synopsis Organic Molecular Crystals by : E. Silin̦š
Download or read book Organic Molecular Crystals written by E. Silin̦š and published by American Institute of Physics. This book was released on 1994 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Market: Specialists, researchers, and students in solid-state physics, materials science, electronics, chemical physics, organic and physical chemistry, and molecular biophysics. This monograph focuses on the interaction processes of excitons and charge carriers with the local environment, including the polarization and localization phenomena and the formation of polaronic quasi- particles. Transport phenomena are discussed and directly correlated with interaction dynamics, which actually determine the time- and temperature-dependent transiton of charge carriers and excitons from a coherent to a diffusive mode of motion.
Book Synopsis Conjugated Polymers by : Klaus Müllen
Download or read book Conjugated Polymers written by Klaus Müllen and published by Royal Society of Chemistry. This book was released on 2013-10-18 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated polymers are gaining a lot of interest due to their inherent functional properties and applications in plastic electronics. Their characteristic charge transporting and conducting properties produces features including coloration, photoluminescence, electroluminescence, photoconductivity, and electrochromism. In order to develop new functional polymers, researchers need the background information on the synthesis of the different polymer systems. Conjugated Polymers focuses on the practical preparation of conjugated polymers with each chapter discussing a particular type of conjugated polymer including a general explanation of the polymer, experimental details for synthesis and characterization. Edited by world leading experts in the field of conjugated polymer synthesis, the book serves as a convenient guide for advanced undergraduate level and above.
Book Synopsis Organic Light Emitting Devices by : Klaus Müllen
Download or read book Organic Light Emitting Devices written by Klaus Müllen and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This high-class book reflects a decade of intense research, culminating in excellent successes over the last few years. The contributions from both academia as well as the industry leaders combine the fundamentals and latest research results with application know-how and examples of functioning displays. As a result, all the four important aspects of OLEDs are covered: - syntheses of the organic materials - physical theory of electroluminescence and device efficiency - device conception and construction - characterization of both materials and devices. The whole is naturally rounded off with a look at what the future holds in store. The editor, Klaus Muellen, is director of the highly prestigious MPI for polymer research in Mainz, Germany, while the authors include Nobel Laureate Alan Heeger, one of the most notable founders of the field, Richard Friend, as well as Ching Tang, Eastman Kodak's number-one OLED researcher, known throughout the entire community for his key publications.
Book Synopsis Developments in Block Copolymer Science and Technology by : Ian W. Hamley
Download or read book Developments in Block Copolymer Science and Technology written by Ian W. Hamley and published by John Wiley & Sons. This book was released on 2004-07-16 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on recent advances in research on block copolymers, covering chemistry (synthesis), physics (phase behaviors, rheology, modeling), and applications (melts and solutions). Written by a team of internationally respected scientists from industry and academia, this text compiles and reviews the expanse of research that has taken place over the last five years into one accessible resource. Ian Hamley is the world-leading scientist in the field of block copolymer research Presents the recent advances in the area, covering chemistry, physics and applications. Provides a broad coverage from synthesis to fundamental physics through to applications Examines the potential of block copolymers in nanotechnology as self-assembling soft materials
