January 16, 2021

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Principles and Applications of Organic Light Emitting Diodes (OLEDs)

Principles and Applications of Organic Light Emitting Diodes (OLEDs)
Author : N. Thejo Kalyani,Hendrik Swart,S. J. Dhoble
Publisher : Woodhead Publishing
Release Date : 2017-05-15
Category : Technology & Engineering
Total pages :332
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Principles and Applications of Organic Light Emitting Diodes (OLEDs)explores the ways in which the development of organic semiconductor materials is opening up new applications in electronic and optoelectronic luminescent devices. The book begins by covering the principles of luminescence and the luminescent properties of organic semiconductors. It then covers the development of luminescent materials for OLEDs, discussing the advantages and disadvantages of organic versus inorganic luminescent materials. The fabrication and characterization of OLEDs is also covered in detail, including information on, and comparisons of, vacuum deposition and solution techniques. Finally, applications of OLEDs are explored, including OLEDs in solid-state lighting, colored lighting, displays and potential future applications, such as ultra-thin and flexible technologies. This book is an excellent resource both for experts and newcomers to the field of organic optoelectronics and OLEDs. It is ideal for scientists working on optical devices, lighting, display and imaging technologies, and for all those engaged in research in photonics, luminescence and optical materials. Provides a one-stop guide to OLED technology for the benefit of newcomers to the field of organic optoelectronics Comprehensively covers the luminescent properties of organic semiconductors and their development into OLED materials Offers practical information on OLED fabrication and their applications in solid-state lighting and displays, making this essential reading for optoelectronics engineers and materials scientists

Organic Light-Emitting Diodes

Organic Light-Emitting Diodes
Author : Jan Kalinowski
Publisher : CRC Press
Release Date : 2018-10-03
Category : Science
Total pages :480
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Organic Light Emitting Diodes: Principles, Characteristics, and Processes presents recent developments in organic electroluminescence and their application to light emitting diodes. In six chapters and complete with an extensive set of references, it describes and illustrates the physical principles of organic LEDs and their electrical and optical characteristics with a wide range of examples and practical studies. The author presents a unified approach to the description and functioning of organic LEDs, based on a comprehensive background of relevant physical processes and provides a clear foundation for the prediction and design of new improved electroluminescent devices.

Introduction to Light Emitting Diode Technology and Applications

Introduction to Light Emitting Diode Technology and Applications
Author : Gilbert Held
Publisher : CRC Press
Release Date : 2016-04-19
Category : Science
Total pages :192
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Recent improvements in LED technology have made them as ubiquitous as cell phones. In fact, LEDs light up almost all cell phones screens. The technology’s myriad applications and low energy use have made it nearly impossible to get through daily chores without coming in contact with LEDs. Probable advances include increased ability of the technology to support more efficient lighting and enhanced communications. With balanced coverage of the basics and future developments, Introduction to Light Emitting Diode Technology and Applications takes you on a tour of the LED evolution. The book begins with a brief history of the effort to enable the device that generates light through modern organic LEDs and reviews the fundamentals and principles of light prior to a detailed explanation of how LEDs generate different colors. After forming this basic foundation, the book examines the key LEDs in lighting and communications. It then discusses the latest opportunities and advancements in high brightness (HB) LED technology, solid state lighting, and handheld electronic applications. As we approach a new decade the role of LEDs is literally set to explode, with organic light emitting diodes emerging as a leading next generation technology for electronic displays and lighting. Challenges still exist, including light extraction, luminosity, and white light generation, not to mention non-technical obstacles such as IP disputes and the lack of standards. This book provides a foundation for resolving these issues and developing new applications for LEDs in the promising general illumination market.

Organic Light-Emitting Diodes (OLEDs)

Organic Light-Emitting Diodes (OLEDs)
Author : Alastair Buckley
Publisher : Elsevier
Release Date : 2013-08-31
Category : Technology & Engineering
Total pages :666
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Organic light-emitting diodes (OLEDs) are opening up exciting new applications in the area of lighting and displays. OLEDs are self emissive and by careful materials and device design can generate colours across the visible spectrum. Together with simple monolithic fabrication on a range of different substrates, these diverse material properties give OLEDs key advantages over existing display and lighting technology. This important book summarises key research on materials, engineering and the range of applications of these versatile materials. Part one covers materials for OLEDs. Chapters review conjugated polymers, transparent conducting thin films, iridium complexes and phosphorescent materials. Part two discusses the operation and engineering of OLED devices. Chapters discuss topics such as highly efficient pin-type OLEDs, amorphous organic semiconductors, nanostructuring techniques, light extraction, colour tuning, printing techniques, fluorenone defects and disruptive characteristics as well as durability issues. Part three explores the applications of OLEDs in displays and solid-state lighting. Applications discussed include displays, microdisplays and transparent OLEDs, sensors and large-area OLED lighting panels. Organic light-emitting diodes (OLEDs) is a standard reference for engineers working in lighting, display technology and the consumer electronics sectors, as well as those researching OLEDs. Summarises key research on the materials, engineering and applications of OLEDs Reviews conjugated polymers, transparent conducting thin films Considers nanostructuring OLEDS for increasing levels of efficiency

The Fundamentals and Applications of Light-Emitting Diodes

The Fundamentals and Applications of Light-Emitting Diodes
Author : Sanjay J. Dhoble,Govind B. Nair
Publisher : Woodhead Publishing
Release Date : 2020-08-15
Category : Technology & Engineering
Total pages :284
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Traditional light sources are fast being replaced by light-emitting diodes (LEDs). The fourth generation of lighting is completely dominated by LED luminaires. Apart from lighting, LEDs have extended its hold on other fields such as digital communications, horticulture, medical fields, space research, art and culture, display devices, entertainment, etc. The technological promises offered by LEDs have elevated it as a front-runner in the lighting industry. This book will explore the journey of LEDs for readers belonging to scientific community. This book reviews the general understanding of the luminescence process and the background of solid state lighting. It includes special emphasis on the phosphor-converted LEDs that are based on inorganic phosphors. It also explores the different types of LEDs that are based on inorganic, organic, quantum dots, perovskite-structured materials and biomaterials. A detailed description has been included about the diverse applications of LEDs in fields such as lighting, displays, horticulture, biomedical and digital communication. Considerable importance has been given to discussion of the challenges that must be solved before using LEDs in commercial applications. Presents concise overview of different types of light-emitting diodes (LEDs) based on inorganic phosphors, organic materials, quantum dots, perovskite-structured materials, and biomaterials Includes a discussion of current and emerging applications in lighting, communications, horticulture and medical fields Addresses fundamentals, luminescence mechanisms and key optical materials (including synthesis methods)

Preparation, Characterization, and Application of Organic Light Emitting Diodes

Preparation, Characterization, and Application of Organic Light Emitting Diodes
Author : Jon Hiram Friedl
Publisher : Unknown
Release Date : 1999
Category :
Total pages :92
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Some fundamental aspects, basic principles, and an application of electroluminescence based on organic materials will be presented. The basic working principles and construction of organic light emitting diodes (LEDs) are described. Some factors affecting the efficiencies and lifetimes of organic LEDs are presented, describing device physics, the mechanism of deposition, and device structures as well as more practical concerns such as the organic transport materials used and the specifies of the thin film evaporation system. The results of an organic LED fabricated using the blue molecular emitter 1,4-bis(2,2-diphenylvinyl) benzene (DPVBi) as an emitting material are presented. A Record of Invention submitted to the Iowa State University Research Foundation jointly by Iowa State University and the University of Michigan entitled Novel Integrated Organic LED/Optical Sensor Devices describes a novel all-organic miniature solid-state oxygen-sensing sensor with one side of a transparent substrate consisting of a DPVBi organic LED and the other side of the substrate being a porous sol-gel matrix which contains a dye whose photoluminescence intensity and lifetime are quenched when exposed to molecular oxygen. The sensor response to gaseous oxygen is described, and its potential applications and technological impact are discussed.

Organic Light-Emitting Transistors

Organic Light-Emitting Transistors
Author : Michele Muccini,Stefano Toffanin
Publisher : John Wiley & Sons
Release Date : 2016-03-18
Category : Technology & Engineering
Total pages :288
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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.

OLED Microdisplays

OLED Microdisplays
Author : François Templier
Publisher : John Wiley & Sons
Release Date : 2014-08-08
Category : Technology & Engineering
Total pages :256
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Microdisplays are displays requiring optical magnification and OLEDs (Organic Light-Emitting Diode) are self-emitting displays where each pixel includes a LED made of organic material, in general composed of small-molecule organic material. This title reviews in detail how OLED microdisplays are made as well as how they are used. All aspects from theory to application will be addressed: basic principles, display design, display fabrication, operation and performances, present and future applications. The book will be useful to anyone interested in this rapidly developing field, such as students or researchers, industry professionals (engineers, project leaders) in the field of display development/fabrication and display end-users.

Organic Semiconductor Heterojunctions and Its Application in Organic Light-Emitting Diodes

Organic Semiconductor Heterojunctions and Its Application in Organic Light-Emitting Diodes
Author : Dongge Ma,Yonghua Chen
Publisher : Springer
Release Date : 2017-09-21
Category : Technology & Engineering
Total pages :153
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This book systematically introduces the most important aspects of organic semiconductor heterojunctions, including the basic concepts and electrical properties. It comprehensively discusses the application of organic semiconductor heterojunctions as charge injectors and charge generation layers in organic light-emitting diodes (OLEDs). Semiconductor heterojunctions are the basis for constructing high-performance optoelectronic devices. In recent decades, organic semiconductors have been increasingly used to fabricate heterojunction devices, especially in OLEDs, and the subject has attracted a great deal of attention and evoked many new phenomena and interpretations in the field. This important application is based on the low dielectric constant of organic semiconductors and the weak non-covalent electronic interactions between them, which means that they easily form accumulation heterojunctions. As we know, the accumulation-type space charge region is highly conductive, which is an important property for highly efficient charge generation in their application as charge injector and charge generation layer in OLEDs. This book serves as a valuable reference for researchers and as a textbook for graduate students focusing on the study and development of OLED for display and lighting.

Efficient Organic Light Emitting Diodes (OLEDs)

Efficient Organic Light Emitting Diodes (OLEDs)
Author : Yi-Lu Chang
Publisher : Pan Stanford
Release Date : 2015-11-30
Category : Science
Total pages :200
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Following two decades of intense research globally, the organic light-emitting diode (OLED) has steadily emerged as the ultimate display technology of choice for the coming decades. Portable active matrix OLED displays have already become prevalent, and even large-sized ultra-high definition 4K TVs are being mass-produced. More exotic applications such as wearable displays have been commercialized recently. With the burgeoning success in displays, researchers are actively bringing the technology forward into the exciting solid-state lighting market. This book presents the knowledge needed for students and researchers from diverse disciplines to understand the underlying principles in OLED technology. It begins with a brief history and fundamental working principles of OLEDs. After introducing the fundamentals, it discusses more efficient OLED designs, as well as advanced strategies to enhance the performance. The text covers in detail important areas such as top-emission, p- and n-type doping, device stability, light extraction, and stacked white OLEDs. It also throws light on the current industry practice and major areas of focus in the near future.

Solid State Chemistry Research Trends

Solid State Chemistry Research Trends
Author : Ronald W. Buckley
Publisher : Nova Publishers
Release Date : 2007
Category : Science
Total pages :236
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The book on solid state chemistry presents studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids. Research areas covered in this book include: bonding in solids, crystal chemistry, crystal growth mechanisms, diffusion epitaxy, high-pressure processes, magnetic properties of materials, optical characterisation of materials, order-disorder, phase equilibria and transformation mechanisms, reactions at surfaces, statistical mechanics of defect interactions, structural studies and transport phenomena.

Quantum-dot Based Light-emitting Diodes

Quantum-dot Based Light-emitting Diodes
Author : Morteza Sasani Ghamsari
Publisher : BoD – Books on Demand
Release Date : 2017-10-25
Category : Technology & Engineering
Total pages :170
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Quantum dot-based light emitting diodes were assigned to bringing together the latest and most important progresses in light emitting diode (LED) technologies. In addition, they were dedicated to gain the perspective of LED technology for all of its advancements and innovations due to the employment of semiconductor nanocrystals. Highly selective, the primary aim was to provide a visual source for high-urgency work that will define the future directions relating to the organic light emitting diode (OLED), with the expectation for lasting scientific and technological impact. The editor hopes that the chapters verify the realization of the mentioned aims that have been considered for editing of this book. Due to the rapidly growing OLED technology, we wish this book to be useful for any progress that can be achieved in future.

Electronic Processes in Organic Semiconductors

Electronic Processes in Organic Semiconductors
Author : Anna Köhler,Heinz Bässler
Publisher : John Wiley & Sons
Release Date : 2015-03-17
Category : Technology & Engineering
Total pages :424
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The first advanced textbook to provide a useful introduction in a brief, coherent and comprehensive way, with a focus on the fundamentals. After having read this book, students will be prepared to understand any of the many multi-authored books available in this field that discuss a particular aspect in more detail, and should also benefit from any of the textbooks in photochemistry or spectroscopy that concentrate on a particular mechanism. Based on a successful and well-proven lecture course given by one of the authors for many years, the book is clearly structured into four sections: electronic structure of organic semiconductors, charged and excited states in organic semiconductors, electronic and optical properties of organic semiconductors, and fundamentals of organic semiconductor devices.

OLED Fundamentals

OLED Fundamentals
Author : Daniel J. Gaspar,Evgueni Polikarpov
Publisher : CRC Press
Release Date : 2015-05-15
Category : Technology & Engineering
Total pages :494
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A Comprehensive Source for Taking on the Next Stage of OLED R&D OLED Fundamentals: Materials, Devices, and Processing of Organic Light-Emitting Diodes brings together key topics across the field of organic light-emitting diodes (OLEDs), from fundamental chemistry and physics to practical materials science and engineering aspects to design and manufacturing factors. Experts from top academic institutions, industry, and national laboratories provide thorough, up-to-date coverage on the most useful materials, devices, and design and fabrication methods for high-efficiency lighting. The first part of the book covers all the construction materials of OLED devices, from substrate to encapsulation. For the first time in book form, the second part addresses challenges in devices and processing, including architectures and methods for new OLED lighting and display technologies. The book is suitable for a broad audience, including materials scientists, device physicists, synthetic chemists, and electrical engineers. It can also serve as an introduction for graduate students interested in applied aspects of photophysics and electrochemistry in organic thin films.

Light-Emitting Diode

Light-Emitting Diode
Author : Jagannathan Thirumalai
Publisher : BoD – Books on Demand
Release Date : 2018-09-19
Category : Technology & Engineering
Total pages :168
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The broad vision of this book is to offer book lovers a comprehensive appraisal of topics in the global advancements of experimental facts, instrumentation, and practical applications of LED and OLED materials and their applications. The prime feature of this book is connected with LED and OLED materials approaches of fabrication, optimization limits, and their extensive technical applications. This book is comprised of seven chapters encompassing the importance of LEDs and OLEDs, the history of LEDs and OLEDs with necessary examples, the phototoxic-cum-bactericidal effect due to the usage of blue LED irradiation, DC network indoor and outdoor LED lighting, WLEDs with thermally activated delayed fluorescence emitters, tetradentate cyclometalated platinum (II) complex-based efficient organic LEDs, the impact of the use of large LED lighting loads in low-voltage networks, highly efficient OLEDs using thermally activated delayed fluorescent materials, and AlGaN deep ultraviolet LEDs. Individual chapters provide a base for the wide range of common bibliophiles in diversified fields, students, and researchers, who may conduct research pertinent to this book and will find simply explained basics as well as advanced principles of designated subjects related to these phenomena. The book was created from seven contributions from experts in the diversified fields of LED and OLED fabrication and technology from over 15 research institutes across the globe.