Thermally Activated Delayed Fluorescence Organic Light Emitting Diodes TADF OLEDs

Thermally Activated Delayed Fluorescence Organic Light Emitting Diodes  TADF OLEDs
Author: Lian Duan
Publsiher: Woodhead Publishing
Total Pages: 488
Release: 2021-10-15
ISBN: 0128227737
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Thermally Activated Delayed Fluorescence Organic Light Emitting Diodes TADF OLEDs 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

White Organic Light Emitting Diodes with Thermally Activated Delayed Fluorescence Emitters

White Organic Light Emitting Diodes with Thermally Activated Delayed Fluorescence Emitters
Author: Dongxiang Luo
Publsiher: Unknown
Total Pages: 135
Release: 2018
ISBN: 1928374650XXX
Category: Technology
Language: EN, FR, DE, ES & NL

White Organic Light Emitting Diodes with Thermally Activated Delayed Fluorescence Emitters Book Excerpt:

Recently, thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) have attracted both academic and industrial interest due to their extraordinary characteristics, such as high efficiency, low driving voltage, bright luminance, lower power consumption, and potentially long lifetime. In this chapter, various approaches to realize white OLEDs (WOLEDs) with TADF emitters have been introduced. The recent development of WOLEDs based on all TADF emitters, WOLEDs based on TADF and conventional fluorescence emitters, and WOLEDs based on TADF and phosphorescence emitters is highlighted. Particularly, the device structures, design strategies, working mechanisms, and electroluminescent processes of the representative high-performance WOLEDs with TADF emitters are reviewed. Moreover, challenges and opportunities for further enhancement of the performance of WOLEDs with TADF emitters are presented.

Recent Advances in Thermally Activated Delayed Fluorescence Materials

Recent Advances in Thermally Activated Delayed Fluorescence Materials
Author: Eli Zysman-Colman,Sebastian Reineke,Guohua Xie,Chihaya Adachi
Publsiher: Frontiers Media SA
Total Pages: 135
Release: 2021-03-08
ISBN: 2889663930
Category: Science
Language: EN, FR, DE, ES & NL

Recent Advances in Thermally Activated Delayed Fluorescence Materials Book Excerpt:

Light Emitting Diode

Light Emitting Diode
Author: Jagannathan Thirumalai
Publsiher: BoD – Books on Demand
Total Pages: 168
Release: 2018-09-19
ISBN: 1789237505
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Light Emitting Diode Book Excerpt:

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.

A New Generation of Organic Light Emitting Materials and Devices

A New Generation of Organic Light Emitting Materials and Devices
Author: Shi-Jian Su,Lian Duan,Hisahiro Sasabe
Publsiher: Frontiers Media SA
Total Pages: 135
Release: 2019-11-27
ISBN: 288963163X
Category: Electronic Book
Language: EN, FR, DE, ES & NL

A New Generation of Organic Light Emitting Materials and Devices 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.

Advanced Nanomaterials for Solar Cells and Light Emitting Diodes

Advanced Nanomaterials for Solar Cells and Light Emitting Diodes
Author: Feng Gao
Publsiher: Elsevier
Total Pages: 549
Release: 2019-04-10
ISBN: 0128136480
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Advanced Nanomaterials for Solar Cells and Light Emitting Diodes Book Excerpt:

Advanced Nanomaterials for Solar Cells and Light Emitting Diodes discusses the importance of nanomaterials as the active layers in solar cells and light emitting diodes (LEDs), along with the progress of nanomaterials as the electron and hole transporting layers. Specifically, the book reviews the use of nano-morphology of polymers, small molecules, and the organic-inorganic perovskites as the active layers in solar cells and LEDs. The design, fabrication and properties of metal-oxide-based nano-structures as electron and hole transporting layers are also reviewed. In addition, the development of plasmonic nanomaterials for solar cells and LEDs is discussed. Each topic in this book includes an overview of the materials system from principles to process. The advantages, disadvantages and related methodologies are highlighted. The book includes applications based on materials and emphasize how to improve the performance of solar cells and LEDs by the materials design, with a focus on nanomaterials. Provides latest research on nanostructured materials including small molecules, polymers, organic-inorganic perovskites, and many other relevant materials systems for solar cells and LEDs Addresses each promising materials system from principles to process, detailing the advantages and disadvantages of the most relevant methods of processing and fabrication Looks ahead to most likely techniques to improve performance of solar cells and light emitting diodes

Study on Efficiency and Lifetime Enhancement of Blue Quantum Dot Light emitting Diodes and High Efficiency Green Thermally Activated Delayed Fluorescence Organic Light emitting Diodes

Study on Efficiency and Lifetime Enhancement of Blue Quantum Dot Light emitting Diodes and High Efficiency Green Thermally Activated Delayed Fluorescence Organic Light emitting Diodes
Author: 丁玟呈
Publsiher: Unknown
Total Pages: 135
Release: 2020
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Study on Efficiency and Lifetime Enhancement of Blue Quantum Dot Light emitting Diodes and High Efficiency Green Thermally Activated Delayed Fluorescence Organic Light emitting Diodes Book Excerpt:

Materials for Solid State Lighting and Displays

Materials for Solid State Lighting and Displays
Author: Adrian Kitai
Publsiher: John Wiley & Sons
Total Pages: 384
Release: 2017-03-06
ISBN: 1119140587
Category: Science
Language: EN, FR, DE, ES & NL

Materials for Solid State Lighting and Displays Book Excerpt:

Cover -- Title Page -- Copyright -- Contents -- List of Contributors -- Series Preface -- Preface -- Acknowledgments -- About the Editor -- Chapter 1 Principles of Solid State Luminescence -- 1.1 Introduction to Radiation from an Accelerating Charge -- 1.2 Radiation from an Oscillating Dipole -- 1.3 Quantum Description of an Electron during a Radiation Event -- 1.4 The Exciton -- 1.5 Two-Electron Atoms -- 1.6 Molecular Excitons -- 1.7 Band-to-Band Transitions -- 1.8 Photometric Units -- 1.9 The Light Emitting Diode -- References -- Chapter 2 Quantum Dots for Displays and Solid State Lighting -- 2.1 Introduction -- 2.2 Nanostructured Materials -- 2.3 Quantum Dots -- 2.3.1 History of Quantum Dots -- 2.3.2 Structure and Properties Relationship -- 2.3.3 Quantum Confinement Effects on Band Gap -- 2.4 Relaxation Process of Excitons -- 2.4.1 Radiative Relaxation -- 2.4.2 Nonradiative Relaxation Process -- 2.5 Blinking Effect -- 2.6 Surface Passivation -- 2.6.1 Organically Capped QDs -- 2.6.2 Inorganically Passivated QDs -- 2.7 Synthesis Processes -- 2.7.1 Top-Down Synthesis -- 2.7.2 Bottom-Up Approach -- 2.8 Optical Properties and Applications -- 2.8.1 Displays -- 2.8.2 Solid State Lighting -- 2.8.3 Biological Applications -- 2.9 Perspective -- Acknowledgments -- References -- Chapter 3 Color Conversion Phosphors for Light Emitting Diodes -- 3.1 Introduction -- 3.2 Disadvantages of Using LEDs Without Color Conversion Phosphors -- 3.3 Phosphors for Converting the Color of Light Emitted by LEDs -- 3.3.1 General Considerations -- 3.3.2 Requirements of Color Conversion Phosphors -- 3.3.3 Commonly Used Activators in Color Conversion Phosphors -- 3.3.4 Strategies for Generating White Light from LEDs -- 3.3.5 Outstanding Problems with Color Conversion Phosphors for LEDs

Light Active Functional Organic Materials

Light Active Functional Organic Materials
Author: Hiroko Yamada,Shiki Yagai
Publsiher: CRC Press
Total Pages: 224
Release: 2019-05-22
ISBN: 0429827989
Category: Science
Language: EN, FR, DE, ES & NL

Light Active Functional Organic Materials Book Excerpt:

Inspired by naturally occurring light-active molecular systems such as photosynthesis, scientists have long devoted their efforts to understanding how light and molecules interact. Based on a raft of knowledge on light absorption, energy migration and electron transfer, fluorescence and phosphorescence, and various photochemical reactions, light can now be utilized for energy conversion, information storage, medical applications, and development of next-generation photofunctional materials that cannot be obtained via conventional organic synthesis. This book overviews some of the cutting-edge p-conjugated molecular and polymer materials for organic photovoltaics, artificial photosynthesis, and organic light-emitting devices. It gives insights into the interactions between light and molecules and discusses sophisticated molecular designs, self-assembly and self-organization strategies, and state-of-the-art unconventional analytical methods.

Photoluminescent Materials and Electroluminescent Devices

Photoluminescent Materials and Electroluminescent Devices
Author: Nicola Armaroli,Henk J. Bolink
Publsiher: Springer
Total Pages: 395
Release: 2017-05-25
ISBN: 3319593048
Category: Science
Language: EN, FR, DE, ES & NL

Photoluminescent Materials and Electroluminescent Devices Book Excerpt:

The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Highly Efficient OLEDs

Highly Efficient OLEDs
Author: Hartmut Yersin
Publsiher: Wiley-VCH
Total Pages: 608
Release: 2018-11-19
ISBN: 3527339000
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Highly Efficient OLEDs Book Excerpt:

The essential resource that offers a comprehensive understanding of OLED optimizations Highly Efficient OLEDs. Materials Based on Thermally Activated Delayed Fluorescence (TADF) offers substantial information on the working principle of OLEDs and on new types of emitting materials (organic and inorganic). As the authors explain, OLEDs that use the Singlet-Harvesting mechanism based on the molecular property of TADF work according to a new exciton harvesting principle. Thus, low-cost emitter materials, such as Cu(I) or Ag(I) complexes as well as metal-free organic molecules, have the potential to replace high-cost rare metal complexes being currently applied in OLED technology. With contributions from an international panel of experts on the topic, the text shows how the application of new TADF materials allow for the development of efficient OLED displays and lighting systems. This new mechanism is the gateway to the third-generation of luminescent materials. This important resource: Offers a state-of-the-art compilation of the latest results in the dynamically developing field of OLED materials Is edited by a pioneer in the field of OLED material technology Contains a detailed application-oriented guide to new low-cost materials for displays and lighting Puts the focus on the emerging fields of OLED technology Written for materials scientists, solid state chemists, solid state physicists, and electronics engineers, Highly Efficient OLEDs. Materials Based on Thermally Activated Delayed Fluorescence offers a comprehensive resource to the latest advances of OLEDs based on new TADF materials.

Luminescence

Luminescence
Author: Sergei Pyshkin
Publsiher: BoD – Books on Demand
Total Pages: 142
Release: 2020-06-24
ISBN: 1789841313
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Luminescence Book Excerpt:

Luminescence - OLED Technology and Applications is a collection of reviewed and relevant research chapters offering a comprehensive overview of recent developments in the field of organic light-emitting diode (OLED) materials and devices. The book comprises chapters authored by various researchers and is edited by an expert in the field. It provides a thorough overview of the latest technologies and applications in this field and opens new possible research paths for further novel developments.

Photophysics of Thermally activated Delayed Fluorescence Emitters and Its Impact on the Performance of Organic Light emitting Diodes

Photophysics of Thermally activated Delayed Fluorescence Emitters and Its Impact on the Performance of Organic Light emitting Diodes
Author: Daniel Alfredo de sa Pereira
Publsiher: Unknown
Total Pages: 135
Release: 2019
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Photophysics of Thermally activated Delayed Fluorescence Emitters and Its Impact on the Performance of Organic Light emitting Diodes Book Excerpt:

Aggregation Induced Emission AIE

Aggregation Induced Emission  AIE
Author: Jianwei Xu,Ming Hui Chua,Ben Zhong Tang
Publsiher: Elsevier
Total Pages: 696
Release: 2022-04-17
ISBN: 0128243368
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Aggregation Induced Emission AIE Book Excerpt:

Aggregation-Induced Emission (AIE): A Practical Guide introduces readers to the topic, guiding them through fundamental concepts and the latest advances in applications. The book covers concepts, principles and working mechanisms of AIE in AIE-active luminogens, with different classes of AIE luminogens reviewed, including polymers, three-dimensional frameworks (MOFs and COFs) and supramolecular gels. Special focus is given to the structure-property relationship, structural design strategies, targeted properties and application performance. The book provides readers with a deep understanding, not only on the fundamental principles of AIE, but more importantly, on how AIE luminogens and AIE properties can be incorporated in material development. Provides the fundamental principles, design and synthesis strategies of aggregation induced emission materials Reviews the most relevant applications in materials design for stimuli-responsive materials, biomedical applications, chemo-sensing and optoelectronics Emphasizes structural design and its connection to aggregation induced emission properties, also exploring the structure-property relationship

Advanced Nanomaterials for Light Emitting Diodes and Solar Cells

Advanced Nanomaterials for Light Emitting Diodes and Solar Cells
Author: Baiquan Liu,Swee Tiam Tan,Xuyong Yang,Qifan Xue
Publsiher: Frontiers Media SA
Total Pages: 135
Release: 2021-09-29
ISBN: 2889714012
Category: Science
Language: EN, FR, DE, ES & NL

Advanced Nanomaterials for Light Emitting Diodes and Solar Cells Book Excerpt:

Design Synthesis and Application of Novel Conjugated Materials Part II

Design  Synthesis  and Application of Novel    Conjugated Materials   Part II
Author: Haichang Zhang,Taotao Ai,Qixin Zhou
Publsiher: Frontiers Media SA
Total Pages: 135
Release: 2021-11-09
ISBN: 2889716112
Category: Science
Language: EN, FR, DE, ES & NL

Design Synthesis and Application of Novel Conjugated Materials Part II Book Excerpt:

Design Synthesis and Application of Novel Conjugated Materials

Design  Synthesis  and Application of Novel    Conjugated Materials
Author: Haichang Zhang,Taotao Ai,Qixin Zhou
Publsiher: Frontiers Media SA
Total Pages: 135
Release: 2021-02-11
ISBN: 2889664813
Category: Science
Language: EN, FR, DE, ES & NL

Design Synthesis and Application of Novel Conjugated Materials Book Excerpt:

Springer Handbook of Inorganic Photochemistry

Springer Handbook of Inorganic Photochemistry
Author: Detlef Bahnemann,Antonio Otavio T. Patrocinio
Publsiher: Springer Nature
Total Pages: 1910
Release: 2022-07-27
ISBN: 3030637131
Category: Science
Language: EN, FR, DE, ES & NL

Springer Handbook of Inorganic Photochemistry Book Excerpt:

The handbook comprehensively covers the field of inorganic photochemistry from the fundamentals to the main applications. The first section of the book describes the historical development of inorganic photochemistry, along with the fundamentals related to this multidisciplinary scientific field. The main experimental techniques employed in state-of-art studies are described in detail in the second section followed by a third section including theoretical investigations in the field. In the next three sections, the photophysical and photochemical properties of coordination compounds, supramolecular systems and inorganic semiconductors are summarized by experts on these materials. Finally, the application of photoactive inorganic compounds in key sectors of our society is highlighted. The sections cover applications in bioimaging and sensing, drug delivery and cancer therapy, solar energy conversion to electricity and fuels, organic synthesis, environmental remediation and optoelectronics among others. The chapters provide a concise overview of the main achievements in the recent years and highlight the challenges for future research. This handbook offers a unique compilation for practitioners of inorganic photochemistry in both industry and academia.

Physics and Technology of Crystalline Oxide Semiconductor CAAC IGZO

Physics and Technology of Crystalline Oxide Semiconductor CAAC IGZO
Author: Shunpei Yamazaki,Tetsuo Tsutsui
Publsiher: John Wiley & Sons
Total Pages: 432
Release: 2017-02-06
ISBN: 1119247454
Category: Computers
Language: EN, FR, DE, ES & NL

Physics and Technology of Crystalline Oxide Semiconductor CAAC IGZO Book Excerpt:

This book highlights the display applications of c-axis aligned crystalline indium–gallium–zinc oxide (CAAC-IGZO), a new class of oxide material that challenges the dominance of silicon in the field of thin film semiconductor devices. It is an enabler for displays with high resolution and low power consumption, as well as high-productivity manufacturing. The applications of CAAC-IGZO focus on liquid crystal displays (LCDs) with extremely low power consumption for mobile applications, and high-resolution and flexible organic light-emitting diode (OLED) displays, and present a large number of prototypes developed at the Semiconductor Energy Laboratory. In particular, the description of LCDs includes how CAAC-IGZO enables LCDs with extremely low refresh rate that provides ultra-low power consumption in a wide range of use cases. Moreover, this book also offers the latest data of IGZO. The IGZO has recently achieved a mobility of 65.5 cm2?}V-s, and it is expected to potentially exceed 100 cm2?}V-s as high as that of LTPS. A further two books in the series will describe the fundamentals of CAAC-IGZO, and the application to LSI devices. Key features: • Introduces different oxide semiconductor field-effect transistor designs and their impact on the reliability and performance of LCDs and OLED displays, both in pixel and panel-integrated driving circuits. • Reviews fundamentals and presents device architectures for high-performance and flexible OLED displays, their circuit designs, and oxide semiconductors as an enabling technology. • Explains how oxide semiconductor thin-film transistors drastically can improve resolution and lower power consumption of LCDs.

What Controls Thermally Activated Delayed Fluorescence in Guest host Systems for Organic Light emitting Diodes

What Controls Thermally Activated Delayed Fluorescence in Guest host Systems for Organic Light emitting Diodes
Author: Eimantas Duda
Publsiher: Unknown
Total Pages: 135
Release: 2021
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

What Controls Thermally Activated Delayed Fluorescence in Guest host Systems for Organic Light emitting Diodes Book Excerpt: