Download or read book Porphyrin Materials for Organic Light Emitting Diodes written by Brian Tuffy and published by LAP Lambert Academic Publishing. This book was released on 2011-10-15 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic light-emitting diode technology is evolving rapidly with commercial applications in recent years. OLED materials and design are moving into an advanced stage with optimising techniques becoming more important. This work presents the use of porphyrin materials for organic electronics, specifically for organic light-emitting diodes using phosphorescent emission. The porphyrins show interesting photophysical properties which allow for an exploitation of the normally forbidden triplet energy states to achieve a significant enhancement in the device efficiency. This research presents a simple host–guest system where this concept is demonstrated. Various porphyrin structures are synthesised and tuned for OLED performance; from this, we can learn how chemical structure relates to the exciton dynamics and their resulting light emission. It is hoped that this work outlines a possible route to phosphorescent OLED technologies.

Download or read book Cashew Nut Shell Liquid written by Parambath Anilkumar and published by Springer. This book was released on 2017-01-31 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights and reviews the renewable feed stock principle of green nanotechnology by focusing the use of plant-derived cardanol as a renewable starting material for the synthesis of advanced materials. The book presents the chemistry of cardanol and methods of isolation, covers macro and nano structures based on cardanol as well as potential applications of such materials. Future perspectives on cardanol based green nanotechnology are highlighted in the final chapter.

Download or read book Organic Light Emitting Diodes OLEDs written by Alastair Buckley and published by Elsevier. This book was released on 2013-08-31 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book OLED Fundamentals written by Daniel J. Gaspar and published by CRC Press. This book was released on 2015-05-15 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Comprehensive Source for Taking on the Next Stage of OLED R&DOLED 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 ma

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 Electrochemistry of N4 Macrocyclic Metal Complexes written by Jose H. Zagal and published by Springer. This book was released on 2016-05-03 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition describes the state of the art regarding metal complexes of N4-ligands, such as porphyrins and phthalocyanines. Volume 2 focuses on the electro assisted use of N4 complexes as biomimetic models for studying several biological redox processes. It focuses on molecular oxygen transport and catalytic activation to mimic monooxygenase enzymes of the cytochrome P450 in particular. It also examines N4 complexes’ use as catalysts for the oxidative degradation of various types of pollutants (organo-halides, for example) and residual wastes. The remarkable activity of these complexes towards a large number of significantly relevant biological compounds makes them excellent candidates as electrode modifiers for electrochemical sensing. This volume also discusses applications of N4 Macrocyclic Metal Complexes to photoelectrochemistry and photocatalysis, and concludes with an exciting section on Electrosynthesis of N4.

Download or read book Introduction to Organic Electronic and Optoelectronic Materials and Devices written by Sam-Shajing Sun and published by CRC Press. This book was released on 2016-10-03 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the combined subjects of organic electronic and optoelectronic materials/devices. It is designed for classroom instruction at the senior college level. Highlighting emerging organic and polymeric optoelectronic materials and devices, it presents the fundamentals, principle mechanisms, representative examples, and key data.

Download or read book Organic Light emitting Materials and Devices written by and published by . This book was released on 1999 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conjugated Polymers for Organic Electronics written by Andrew Grimsdale and published by Cambridge University Press. This book was released on 2024-05-31 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the chemistry and physics of conjugated polymers, and how they can be designed and optimised for various electronic applications.

Download or read book Phthalocyanines and Some Current Applications written by Yusuf Yilmaz and published by BoD – Books on Demand. This book was released on 2017-06-21 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since their initial accidental synthesis and characterization in Scotland in the late 1920s, there has been a strong research focus on the use of phthalocyanines (Pcs) as dyes and pigments. In recent years, active research fields have included their use in electrophotography, photovoltaic and solar cells, molecular electronics, Langmuir-Blodgett films, photosensitizers, electrochromic display devices, gas sensors, liquid crystals, low-dimensional conductors, and optical disks. Phthalocyanines possess interesting biological, electronic, optical, catalytic, and structural properties. The main disadvantage is their insolubility in common solvents due to strong intermolecular - interactions. The solubility of phthalocyanines can be increased by various methods such as the formation of anionic and cationic species and both axial and peripheral substitution. Substitution at the nonperipheral and peripheral positions of the benzo moieties usually enhances their solubility in organic solvents. The most important advantage of phthalocyanines compared to porphyrins is that their Q bands lie at longer wavelengths and are considerably more intense. In this book, you will find synthesis and some applications of various phthalocyanine derivatives.

Download or read book Porphyrins Phthalocyanines and Supramolecular Assemblies written by K. Kadish and published by The Electrochemical Society. This book was released on 2015-07-29 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Glass Research written by Shadia Jamil Ikhmayies and published by Springer Nature. This book was released on 2023-01-01 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers preparation methods, characterization, and applications of most glass families. It reports the fundamentals of glass, challenges in the development, traditional and new manufacturing processes, characterization techniques, structural, thermal, and optical properties. The book reviews redox reactions in glasses and the factors affecting them, in addition to the techniques for determining the redox states and speciation of polyvalent ions in glass. A special chapter is dedicate to phosphate glasses, their importance, preparation methods, structure and properties. The use of different types of phosphate glasses in biomedicine, optics, electrochemistry, and as hosts for nuclear wastes is thoroughly discussed. Moreover, the applications of phosphate glasses in electronics and laser technology are also discussed in this book. Recent experimental studies such as the development of a novel bioglass system and the influence of ZnO, TiO2, and Al2O3 incorporation on structural, mechanical strength, degradation, pH variation, and formation of hydroxyapatite (Hap) layer on the glass surface are reported. Promising aluminum-silicate glassy system and its glass-ceramic counterpart are also presented in this books. An overview of the calorimetry approaches related to rare earth improvements on the thermal stability of glass is provided. The book discusses the advances in the chalcogenide glasses (ChGs) and based devices. It also reports their applications in optical devices, semiconductor circuits, and other applications. In addition, lanthanide and/or QDs doped luminescent glasses and their use in solid-state lighting and displays, security (anti-counterfeiting), optical temperature sensors, and solar energy (solar spectrum conversion) are reviewed along with a comparison of their advantages and disadvantages. Finally, the nature of phthalocyanines as materials for glass coatings and most widely used synthesis methods of porphyrins and phthalocyanines are discussed.

Download or read book Quantum chemical studies on Porphyrins Fullerenes and Carbon Nanostructures written by Oleksandr Loboda and published by Springer Science & Business Media. This book was released on 2012-09-19 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents theoretical studies of electronic structure, optical and spectroscopic properties of a number of compounds such as porphyrins, fullerenes and heteroatomic single-wall nanotubes. The book presents new, faster calculation methods for application in quantum-chemical theory of electronic structures. It addresses issues of practical importance such as the development of materials for photosensitizers, organic LEDs and solar cells.

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 2020-05-01 with total page 213 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 Thermally Activated Delayed Fluorescence Organic Light Emitting Diodes TADF OLEDs written by Lian Duan and published by Woodhead Publishing. This book was released on 2021-10-15 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes (TADF-OLEDs) comprehensively introduces the history of TADF, along with a review of fundamental concepts. Then, TADF emitters with different colors, such as blue, green, red and NIR as well as white OLEDs are discussed in detail. Other sections cover exciplex-type TADF materials, emerging application of TADF emitters as a host in OLEDs, and applications of TADF materials in organic lasers and biosensing. - Discusses green, blue, red, NIR and white TADF emitters and their design strategies for improved performance for light-emitting diode applications - Addresses emerging materials, such as molecular and exciplex-based TADF materials - Includes emerging applications like lasers and biosensors

Download or read book Biological Pigments Advances in Research and Application 2012 Edition written by and published by ScholarlyEditions. This book was released on 2012-12-26 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Pigments—Advances in Research and Application: 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Biological Pigments. The editors have built Biological Pigments—Advances in Research and Application: 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Biological Pigments in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Biological Pigments—Advances in Research and Application: 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book A New Generation of Organic Light Emitting Materials and Devices written by Shi-Jian Su and published by Frontiers Media SA. This book was released on 2019-11-27 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the invention of the first efficient organic light-emitting diodes (OLEDs) by C. T. Tang and S. VanSlyke, OLEDs have attracted close interest as a promising candidate for next-generation full-color displays and future solid-state lighting sources because of a number of advantages like high brightness and contrast, high luminous efficiency, fast response time, wide viewing angle, low power consumption, and light weight. The recombination of holes and electrons under electrical excitation typically generates 25% singlet excitons and 75% triplet excitons. For traditional fluorescent OLEDs, only 25% singlet excitons can be utilized to emit light, while the other 75% triplet excitons are generally wasted through nonradiative transition. By adopting noble metal phosphorescent complexes, an internal quantum efficiency (IQE) of 100% could be achieved by utilizing both the 25% singlet excitons and 75% triplet excitons. However, these phosphors usually contain nonrenewable and highcost iridium or platinum noble metals. Most recently, unity IQE has been readily achieved through noble metal-free purely organic emitters, such as thermally activated delayed fluorescence (TADF) emitters, hybridized local and charge-transfer state (HLCT) “hot exciton” emitters, binary- or ternary-mixed donor-acceptor exciplex emitters, and neutral p radical emitters, etc. In addition, the combination of conventional p-type hole-transport and n-type electron-transport materials in an appropriate device structure can also provide an uncommon efficiency. Both strategies are essential and attractive for high-performance and low-cost full-color displays and white OLED applications. This Research Topic mainly focus on this new generation of organic light-emitting materials and devices, including design, synthesis, and characterization of light-emitting organic molecules with tunable excited states, and their structural, electrical, and photophysical properties. Contributions relating to carrier transporting materials and corresponding device engineering are also included. Two mini reviews and thirteen original research articles by recognized academic experts in their respective fields are collected in this Research Topic, which will offer a broad perspective of noble metal-free organic light emitters, including conventional fluorescent emitters, TADF emitters, HLCT emitters, exciplex emitters, aggregation-induced emission (AIE) luminogens, and their corresponding devices. We believe this eBook should attract the attention of multidisciplinary researchers in the fields of materials science, organic synthesis, and electronic device engineering, especially for those engaged in OLED-related areas.