Download or read book Molecular Design of Organic Semiconductors for Electronic Devices and Their Application in Flexible Light Emitting Diodes written by Hermona K. Pandya and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of the studies investigated in this work has been two-fold. In the first part, a structure-property study of three novel two-dimensional conjugated phenylenevinylene (PV) based isomers containing oxadiazole moieties for optoelectronic applications has been carried out. The compounds have been designed to serve as a model to study charge delocalization and transport as well as molecular symmetry in organic semiconductor molecules. These molecules are tetra-substituted at the central phenyl ring with two PV based arms and two oxadiazole derivatized PV (OXAPPV) arms. In the three molecules, termed p -, o -, and m -OXA-X, the OXAPPV arms are positioned in a para -, ortho - or meta -position, respectively, in relation to each other. Comparing these molecules, the role of symmetry and charge delocalization in this class of compounds has been explored. Despite having different linear segments, they have nearly identical photophysical properties suggesting a similar charge delocalization mechanism. However, in a LED with the molecules as emissive layers between aluminum and ITO electrodes and with poly(3,4-ethylenedioxythiophene) with poly(styrenesulfonate) (PEDOT:PSS) and lithium fluoride to aid in hole and electron injection, respectively, o -OXA-X exhibited the highest external quantum, luminance and power efficiencies. We explain these differences based on the changes in the film morphology between the three molecules. Supporting data from cyclic voltammetry and morphological data from atomic force microscopy, NMR studies, thermal characterization and x-ray diffraction studies are also reported. In the second part, in an effort to construct stable and high efficiency devices with a single emissive layer and with a stable cathode, flexible LEDs have been fabricated and tested in simple device configurations. Devices on flexible substrates have been made using either the 2D conjugated molecules or a soluble poly(phenylenevinylene) (PPV) and oxadiazole substituted PPV derivatized random copolymer, RC30, as the emissive layer and higher work function aluminum cathodes and compared with control devices on glass substrates. In all devices PEDOT:TSS has been used as the hole transporting layer and a thin layer of cesium fluoride or lithium fluoride has been employed at the polymer/cathode interface to aid in electron injection. For the RC30 polymer, devices on plastic substrates with a lithium fluoride interlayer performed the best, exhibiting up to 1% external quantum efficiency and an average of 0.8% and luminance of 1600 cd/m 2 at 40 mA/cm2 (7.8 V). Stability of this device and morphology of the emissive film have also been investigated.

Download or read book Physics of Organic Semiconductors written by Wolfgang Brütting and published by John Wiley & Sons. This book was released on 2012-10-02 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of organic electronics has seen a steady growth over the last 15 years. At the same time, our scientific understanding of how to achieve optimum device performance has grown, and this book gives an overview of our present-day knowledge of the physics behind organic semiconductor devices. Based on the very successful first edition, the editors have invited top scientists from the US, Japan, and Europe to include the developments from recent years, covering such fundamental issues as: - growth and characterization of thin films of organic semiconductors, - charge transport and photophysical properties of the materials as well as their electronic structure at interfaces, and - analysis and modeling of devices like organic light-emitting diodes or organic lasers. The result is an overview of the field for both readers with basic knowledge and for an application-oriented audience. It thus bridges the gap between textbook knowledge largely based on crystalline molecular solids and those books focusing more on device applications.

Download or read book Organic Electronics written by Stephen R. Forrest and published by Oxford University Press. This book was released on 2020-07-22 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides a basic understanding of the principles of the field of organic electronics, through to their applications in organic devices. Useful for both students and practitioners, it is a teaching text as well as an invaluable resource that serves as a jumping-off point for those interested in learning, working and innovating in this rapidly growing field. Organics serve as a platform for very low cost and high performance optoelectronic and electronic devices that cover large areas, are lightweight, and can be both flexible and conformable to fit onto irregularly shaped surfaces such as foldable smart phones. Organic electronics is at the core of the global organic light emitting device (OLED) display industry. OLEDs also have potential uses as lighting sources. Other emerging organic electronic applications include organic solar cells, and organic thin film transistors useful in medical and a range of other sensing, memory and logic applications. This book is a product of both one and two semester courses that have been taught over a period of more than two decades. It is divided into two sections. Part I, Foundations, lays down the fundamental principles of the field of organic electronics. It is assumed that the reader has an elementary knowledge of quantum mechanics, and electricity and magnetism. A background knowledge of organic chemistry is not required. Part II, Applications, focuses on organic electronic devices. It begins with a discussion of organic thin film deposition and patterning, followed by chapters on organic light emitters, detectors, and thin film transistors. The last chapter describes several devices and phenomena that are not covered in the previous chapters, since they lie somewhat outside of the current mainstream of the field, but are nevertheless important.

Download or read book Organic Light Emitting Materials and Devices written by Zhigang Rick Li and published by CRC Press. This book was released on 2017-12-19 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Light-Emitting Materials and Devices provides a single source of information covering all aspects of OLEDs, including the systematic investigation of organic light-emitting materials, device physics and engineering, and manufacturing and performance measurement techniques. This Second Edition is a compilation of the advances made in recent years and of the challenges facing the future development of OLED technology. Featuring chapters authored by internationally recognized academic and industrial experts, this authoritative text: Introduces the history, fundamental physics, and potential applications of OLEDs Reviews the synthesis, properties, and device performance of electroluminescent materials used in OLEDs Reflects the current state of molecular design, exemplifying more than 600 light-emitting polymers and highlighting the most efficient materials and devices Explores small molecules-based OLEDs, detailing hole- and electron-injection and electron-transport materials, electron- and hole-blocking materials, sensitizers, and fluorescent and phosphorescent light-emitting materials Describes solution-processable phosphorescent polymer LEDs, energy transfer processes, polarized OLEDs, anode materials, and vapor deposition manufacturing techniques employed in OLED fabrication Discusses flexible display, the backplane circuit technology for organic light-emitting displays, and the latest microstructural characterization and performance measurement techniques Contains abundant diagrams, device configurations, and molecular structures clearly illutrating the presented ideas Organic Light-Emitting Materials and Devices, Second Edition offers a comprehensive overview of the OLED field and can serve as a primary reference for those needing additional information in any particular subarea of organic electroluminescence. This book should attract the attention of materials scientists, synthetic chemists, solid-state physicists, and electronic device engineers, as well as industrial managers and patent lawyers engaged in OLED-related business areas.

Download or read book Polymers for Light emitting Devices and Displays written by Inamuddin and published by John Wiley & Sons. This book was released on 2020-05-19 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers for Light-Emitting Devices and Displays provides an in-depth overview of fabrication methods and unique properties of polymeric semiconductors, and their potential applications for LEDs including organic electronics, displays, and optoelectronics. Some of the chapter subjects include: • The newest polymeric materials and processes beyond the classical structure of PLED • Conjugated polymers and their application in the light-emitting diodes (OLEDs & PLEDs) as optoelectronic devices. • The novel work carried out on electrospun nanofibers used for LEDs. • The roles of diversified architectures, layers, components, and their structural modifications in determining efficiencies and parameters of PLEDs as high-performance devices. • Polymer liquid crystal devices (PLCs), their synthesis, and applications in various liquid crystal devices (LCs) and displays. • Reviews the state-of-art of materials and technologies to manufacture hybrid white light-emitting diodes based on inorganic light sources and organic wavelength converters.

Download or read book Applications of Organic and Printed Electronics written by Eugenio Cantatore and published by Springer Science & Business Media. This book was released on 2012-09-19 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic and printed electronics can enable a revolution in the applications of electronics and this book offers readers an overview of the state-of-the-art in this rapidly evolving domain. The potentially low cost, compatibility with flexible substrates and the wealth of devices that characterize organic and printed electronics will make possible applications that go far beyond the well-known displays made with large-area silicon electronics. Since organic electronics are still in their early stage, undergoing transition from lab-scale and prototype activities to production, this book serves as a valuable snapshot of the current landscape of the different devices enabled by this technology, reviewing all applications that are developing and those can be foreseen.

Download or read book Handbook of Flexible Organic Electronics written by Stergios Logothetidis and published by Elsevier. This book was released on 2014-12-03 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic flexible electronics represent a highly promising technology that will provide increased functionality and the potential to meet future challenges of scalability, flexibility, low power consumption, light weight, and reduced cost. They will find new applications because they can be used with curved surfaces and incorporated in to a number of products that could not support traditional electronics. The book covers device physics, processing and manufacturing technologies, circuits and packaging, metrology and diagnostic tools, architectures, and systems engineering. Part one covers the production, properties and characterisation of flexible organic materials and part two looks at applications for flexible organic devices. - Reviews the properties and production of various flexible organic materials. - Describes the integration technologies of flexible organic electronics and their manufacturing methods. - Looks at the application of flexible organic materials in smart integrated systems and circuits, chemical sensors, microfluidic devices, organic non-volatile memory devices, and printed batteries and other power storage devices.

Download or read book Organic Flexible Electronics written by Piero Cosseddu and published by Woodhead Publishing. This book was released on 2020-09-29 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Organic Light Emitting Transistors written by Michele Muccini and published by John Wiley & Sons. This book was released on 2016-04-25 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an overview of the developments and applications of Organic Light Emitting Transistors (OLETs) science and technology This book discusses the scientific fundamentals and key technological features of Organic Light Emitting Transistors (OLETs) by putting them in the context of organic electronics and photonics. The characteristics of OLETs are benchmarked to those of OLEDs for applications in Flat Panel Displays and sensing technology. The authors provide a comparative analysis between OLED and OLET devices in order to highlight the fundamental differences in terms of device architecture and working principles, and to point out the enabling nature of OLETs for truly flexible displays. The book then explores the principles of OLET devices, their basic optoelectronic characteristics, the properties of currently available materials, processing and fabrication techniques, and the different approaches adopted to structure the active channel and to control organic and hybrid interfaces. Examines the photonic properties of OLETs, focusing on the external quantum efficiency, the brightness, the light outcoupling, and emission directionality Analyzes the charge transport and photophysical properties of OLET, emphasizing the excitonic properties and spatial emitting characteristics Reviews the key building blocks of the OLET devices and their role in determining the device’s performance Discusses the challenges in OLET design, namely color gamut, power efficiency, and reliability Presents key applications of OLET devices and their potential impact on display technology and sensing Organic Light-Emitting Transistors: Towards the Next Generation Display Technology serves as a reference for researchers, technology developers and end-users to have a broad view of the distinguishing features of the OLET technology and to profile the impact on the display and sensing markets.

Download or read book Air Stable Inverted Organic Light Emitting Diodes written by Katsuyuki Morii and published by Springer Nature. This book was released on 2020-04-03 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise volume provides an introduction to the working principles, design, and construction of air-stable inverted organic light-emitting diodes (OLEDs), which lead to the realization of practical flexible electronics. The first part of the book reviews the history of the three generations of inverted OLEDs: hybrid organic inorganic light-emitting diodes (HOILEDs), metal oxides and organic electron injection layer, describing the materials, fabrication techniques, device structure, applications, and technological challenges involved in each case. The second part of the book focuses on the carrier injection mechanism in OLEDs. The book will be of interest to students and researchers working on organic optoelectronics.

Download or read book OLED Displays and Lighting written by Mitsuhiro Koden and published by John Wiley & Sons. This book was released on 2016-12-12 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains the fundamentals and practical applications of flat and flexible OLEDs for displays and lighting Organic light-emitting diodes (OLEDs) have emerged as the leading technology for the new display and lighting market. OLEDs are solid-state devices composed of thin films of organic molecules that create light with the application of electricity. OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes (LEDs) or liquid crystal displays (LCDs) used today. This book covers both the fundamentals and practical applications of flat and flexible OLEDs. Key features: Covers all of the aspects necessary to the design and manufacturing of OLED displays and lighting. Explains the fundamental basic technologies and also related technologies which might contribute to the next innovation in the industry. Provides several indications for future innovation in the OLED industry. Includes coverage of OLED vacuum deposition type and solution type materials. The book is essential reading for early career engineers developing OLED devices and OLED related technologies in industrial companies, such as OLED device fabrication companies.

Download or read book Organic Structures Design written by Tahsin J. Chow and published by CRC Press. This book was released on 2014-12-01 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of molecular electronics has become the mainstream of scientific research in recent decades. Applications include light-emitting diodes, solar cells, thin-film transistors, and sensors, among others. New-generation organic materials possess the virtues of softness, light weight, easy processing, design flexibility, and so on. This b

Download or read book Electronic Structure of Organic Semiconductors written by Luís Alcácer and published by Morgan & Claypool Publishers. This book was released on 2018-12-07 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written in 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.

Download or read book Advanced Materials for Printed Flexible Electronics written by Colin Tong and published by Springer Nature. This book was released on 2021-10-04 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive introduction to printed flexible electronics and their applications, including the basics of modern printing technologies, printable inks, performance characterization, device design, modeling, and fabrication processes. A wide range of materials used for printed flexible electronics are also covered in depth. Bridging the gap between the creation of structure and function, printed flexible electronics have been explored for manufacturing of flexible, stretchable, wearable, and conformal electronics device with conventional, 3D, and hybrid printing technologies. Advanced materials such as polymers, ceramics, nanoparticles, 2D materials, and nanocomposites have enabled a wide variety of applications, such as transparent conductive films, thin film transistors, printable solar cells, flexible energy harvesting and storage devices, electroluminescent devices, and wearable sensors. This book provides students, researchers and engineers with the information to understand the current status and future trends in printed flexible electronics, and acquire skills for selecting and using materials and additive manufacturing processes in the design of printed flexible electronics.

Download or read book Organic Electronics written by Franky So and published by CRC Press. This book was released on 2009-11-24 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the near future, organic semiconductors may be used in a variety of products, including flat-screen TVs, e-book readers, and third-generation organic photovoltaics applications, to name just a few. While organic electronics has received increased attention in scientific journals, those working in this burgeoning field require more in-depth cover

Download or read book Solution Processed Organic Light Emitting Devices written by Guohua Xie and published by Elsevier. This book was released on 2023-08-29 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solution-Processed Organic Light-Emitting Devices provides a comprehensive reference on the principles and advances in materials design, device structures, and processing technologies of organic light-emitting diodes (OLEDs). Most importantly, the book analyses the dynamics of thin-film growth from solutions such as solvent orthogonalization, coffee-ring effects, and interfacial adhesion. Exciton generation and utilization, host–guest energy transfer, and interfacial interaction in the solution-processed films are considered with the material and device design to maximize the electroluminescent performance of OLEDs.The book reviews the materials, devices, and technologies dedicated to solution-processed thin-film devices, which are not only applicable to OLEDs but may be adapted to other emerging semiconducting devices due to the similarity in methods (for instance, quantum-dot LEDs and solar cells, and perovskite-based LEDs/photovoltaics/detectors).This book is suitable for researchers in academia and industry working in the materials science and engineering, chemistry, and physics disciplines. - Discusses the most relevant and emerging solution-processable materials for OLED applications - Reviews device engineering to address defects, charge transport, and exciton generation in fabricated solution-processable thin films - Provides the methods to grow multilayered thin films from solutions with organic semiconductors, with particular attention to new technologies to overcome interfacial mixing effects

Download or read book Handbook of Organic Materials for Optical and Opto Electronic Devices written by Oksana Ostroverkhova and published by Elsevier. This book was released on 2013-08-31 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small molecules and conjugated polymers, the two main types of organic materials used for optoelectronic and photonic devices, can be used in a number of applications including organic light-emitting diodes, photovoltaic devices, photorefractive devices and waveguides. Organic materials are attractive due to their low cost, the possibility of their deposition from solution onto large-area substrates, and the ability to tailor their properties. The Handbook of organic materials for optical and (opto)electronic devices provides an overview of the properties of organic optoelectronic and nonlinear optical materials, and explains how these materials can be used across a range of applications.Parts one and two explore the materials used for organic optoelectronics and nonlinear optics, their properties, and methods of their characterization illustrated by physical studies. Part three moves on to discuss the applications of optoelectronic and nonlinear optical organic materials in devices and includes chapters on organic solar cells, electronic memory devices, and electronic chemical sensors, electro-optic devices.The Handbook of organic materials for optical and (opto)electronic devices is a technical resource for physicists, chemists, electrical engineers and materials scientists involved in research and development of organic semiconductor and nonlinear optical materials and devices. - Comprehensively examines the properties of organic optoelectronic and nonlinear optical materials - Discusses their applications in different devices including solar cells, LEDs and electronic memory devices - An essential technical resource for physicists, chemists, electrical engineers and materials scientists