Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Synthesis And Characterization Of Novel Organic Semiconducting Materials For Organic Field Effect Transistors Ofets And Photovoltaics Opvs PDF full book. Access full book title Synthesis And Characterization Of Novel Organic Semiconducting Materials For Organic Field Effect Transistors Ofets And Photovoltaics Opvs.
| Author | : Sasikumar Arumugam |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
| Author | : Beata Luszczynska |
| Publisher | : John Wiley & Sons |
| Total Pages | : 688 |
| Release | : 2019-06-11 |
| Genre | : Technology & Engineering |
| ISBN | : 3527814949 |
Provides first-hand insights into advanced fabrication techniques for solution processable organic electronics materials and devices The field of printable organic electronics has emerged as a technology which plays a major role in materials science research and development. Printable organic electronics soon compete with, and for specific applications can even outpace, conventional semiconductor devices in terms of performance, cost, and versatility. Printing techniques allow for large-scale fabrication of organic electronic components and functional devices for use as wearable electronics, health-care sensors, Internet of Things, monitoring of environment pollution and many others, yet-to-be-conceived applications. The first part of Solution-Processable Components for Organic Electronic Devices covers the synthesis of: soluble conjugated polymers; solution-processable nanoparticles of inorganic semiconductors; high-k nanoparticles by means of controlled radical polymerization; advanced blending techniques yielding novel materials with extraordinary properties. The book also discusses photogeneration of charge carriers in nanostructured bulk heterojunctions and charge carrier transport in multicomponent materials such as composites and nanocomposites as well as photovoltaic devices modelling. The second part of the book is devoted to organic electronic devices, such as field effect transistors, light emitting diodes, photovoltaics, photodiodes and electronic memory devices which can be produced by solution-based methods, including printing and roll-to-roll manufacturing. The book provides in-depth knowledge for experienced researchers and for those entering the field. It comprises 12 chapters focused on: ? novel organic electronics components synthesis and solution-based processing techniques ? advanced analysis of mechanisms governing charge carrier generation and transport in organic semiconductors and devices ? fabrication techniques and characterization methods of organic electronic devices Providing coverage of the state of the art of organic electronics, Solution-Processable Components for Organic Electronic Devices is an excellent book for materials scientists, applied physicists, engineering scientists, and those working in the electronics industry.
| Author | : Toan Van Pho |
| Publisher | : |
| Total Pages | : 139 |
| Release | : 2012 |
| Genre | : |
| ISBN | : 9781267294784 |
Shaping new materials that are tailored to meet the specific electronic, chemical, and physical demands in their applications - this is the role of the materials chemist. Although the field of organic electronics has witnessed significant advances since its inception, the toolkit of efficacious materials has been entrusted to a few choice molecular platforms. In an effort to expand this limited library of compounds, new materials based on various polycyclic hydrocarbons have been synthesized and characterized. The pigment quinacridone was incorporated into water/alcohol-soluble electron transport layers that were deposited on top of existing organic-soluble active layers in organic light-emitting diodes and organic photovoltaics, thereby enhancing the transport of electrons and hence the device efficiencies. A strained polycyclic hydrocarbon, decacyclene, was functionalized with three imidegroups to generate a new class of non-fullerene acceptors for organic photovoltaics. A heteroheptacene, dinaphthocarbazole, was characterized for its hole transporting properties in organic field-effect transistors. Finally, various substituted imidazolium-based ionic liquids were synthesized and characterized for their potential use as organic electrolytes in lithium batteries.
| Author | : Fabio Cicoira |
| Publisher | : John Wiley & Sons |
| Total Pages | : 441 |
| Release | : 2013-07-17 |
| Genre | : Technology & Engineering |
| ISBN | : 3527650989 |
An overview of the tremendous potential of organic electronics, concentrating on those emerging topics and technologies that will form the focus of research over the next five to ten years. The young and energetic team of editors with an excellent research track record has brought together internationally renowned authors to review up-and-coming topics, some for the first time, such as organic spintronics, iontronics, light emitting transistors, organic sensors and advanced structural analysis. As a result, this book serves the needs of experienced researchers in organic electronics, graduate students and post-doctoral researchers, as well as scientists active in closely related fields, including organic chemical synthesis, thin film growth and biomaterials. Cover Figure: With kind permission of Matitaccia.
| Author | : Hagen Klauk |
| Publisher | : John Wiley & Sons |
| Total Pages | : 443 |
| Release | : 2012-03-26 |
| Genre | : Technology & Engineering |
| ISBN | : 3527326472 |
Like its predecessor this book is devoted to the materials, manufacturing and applications aspects of organic thin-film transistors. Once again authored by the most renowned experts from this fascinating and fast-moving area of research, it offers a joint perspective both broad and in-depth on the latest developments in the areas of materials chemistry, transport physics, materials characterization, manufacturing technology, and circuit integration of organic transistors. With its many figures and detailed index, this book once again also serves as a ready reference.
| Author | : Chunyan Du |
| Publisher | : Nova Novinka |
| Total Pages | : 0 |
| Release | : 2010 |
| Genre | : Organic electronics |
| ISBN | : 9781616687649 |
Electronic and optoelectronic devices using organic materials as active elements are attractive because they can take advantage of organic materials. Among them, organic field-effect transistors (OFETs), which consist of organic semiconductors, dielectric layers, and electrodes, are expected to be a promising technology for application in displays, sensors and memories. Organic semiconductors play a key role in determining the device characteristics. Recent technological advances in OFETs have triggered intensive research into molecular design, synthesis, device fabrication, thin film morphology and transport of holes and electrons. This book presents and discusses research on new organic semiconductors.
| Author | : Kahawatte Gedara Ruwan Indika Gunawardhana |
| Publisher | : |
| Total Pages | : |
| Release | : 2019 |
| Genre | : Organic field-effect transistors |
| ISBN | : |
Organic semiconductors (OSCs) are used as electro-active materials across numerous different applications, such as organic photovoltaics (OPVs), organic light emitting diodes (OLEDs), and organic field effect transistors (OFETs). This versatility owes to their low cost, light weight, flexibility, solution processability, and ease of large area fabrication. Tremendous efforts have been devoted to designing OSCs with various building blocks in order to obtain more desirable optoelectronic properties. However, there is still a high demand for further improvements in OSC properties. The development of pyrrole-based OSCs for organic electronic applications, fused ring systems containing S,N-heteroacenes, and the working principles of OFETs are discussed in Chapter 1, along with a summary of performance of S,N-heteroacene materials in organic electronic applications. Chapter 2 discusses the tunable optoelectronic properties of thieno[3,2-b]pyrrolebased organic semiconductors synthesized by varying the p-linker. Chapter 3 discusses the effects of using selenophene as a p-spacer in thieno[3,2-b]pyrrole and benzo[c][1,2,5]thiadiazole based donor-acceptor molecule on OFETs parameters. The change of the p-spacer to selenophene in the molecule affects its bond curvature and, consequently the molecule adopted less bond curvature compared to its furan and thiophene analogs. The molecule showed p-type charge carrier mobility characteristics in devices with bottom-gate/bottom-contact configuration. Chapter 4 describes how the change of p-spacer to acquire different backbone curvatures in small molecules synthesized with thieno[3,2-b]pyrrole and benzo[c][1,2,5]thiadiazole impacted p-type OFETs characteristics. Two spacers, bithiophene and thieno[3,2-b]thiophene, produced two different backbone curvature and resulted in a drastic difference in their OFET performance.
| Author | : Xiaomei Ding |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
Molecular design and synthesis play critical roles in the development of organic semiconductors for organic photovoltaics (OPVs). This dissertation describes the design, synthesis, and characterization of three classes of organic semiconductors for OPVs: p-type semiconducting polymers, n-type semiconducting polymers, and non-fullerene small molecule acceptors. The relative merits of alternative building blocks and design strategies for organic semiconductors are investigated. Complex factors governing the underlying structure-property-processing-performance relationships are discussed in detail. The fundamentals of organic semiconductors and organic solar cells, state-of-the-art materials and devices, and challenges in the design and synthesis of materials are reviewed in Chapter 1. Chapter 2 discusses the strategy of selenophene substitution as a potential method to improve photovoltaic performance of the regular thiophene-based p-type semiconducting polymers. New selenophene-containing polymers were synthesized based on a widely used polymer, PBDB-T, where the original thiophene units at various side chain and backbone positions were substituted with selenophene. This study revealed the intramolecular and intermolecular interactions related with selenophene substitution, thus provided important guidelines in designing selenophene-containing polymers. Chapter 3 presents a comparative study of the alternating naphthalene diimide-thiophene copolymer, PNDIT-hd, and naphthalene diimide-selenophene copolymer, PNDIS-hd. The effects of selenophene substitution on the intrinsic and photovoltaic blend properties of n-type semiconducting naphthalene diimide-arylene copolymers with simple donor−acceptor architecture were investigated. This study demonstrated multiple advantages of selenophene substitution including enhancing light harvesting, formation of favorable morphology, and reducing charge recombination losses in all-polymer solar cell devices. Towards enhancing the intrinsic stability of small molecule acceptors, novel tridecacyclic ladder structure was designed and realized via Friedlander condensation reactions. The tridecacyclic ladder molecule acceptors (LMAs) described in Chapter 4 combined good solubility with enhanced stabilities and high photovoltaic performance. One of the new LMAs, LTX-4Cl, demonstrated a high PCE of 11.5% with high fill factor of 0.75. This study also unraveled the significant impact of side chains and halogenations on the molecular packing characteristics of the LMAs and the resulted photovoltaic performance. Finally, the results of the above studies are summarized in Chapter 5 and an outlook is given for future development of organic semiconductors and the organic photovoltaic technology.
| Author | : Clayton Edward Mauldin |
| Publisher | : |
| Total Pages | : 208 |
| Release | : 2010 |
| Genre | : |
| ISBN | : |
The goal of this research was to develop methods to control the material properties of organic semiconductors, like solubility, stability, charge mobility, and self-assembly, through structural design. Investigations of structure-property relationships were conducted to optimize the properties of organic semiconductors for applications in organic field effect transistors (OFETs) and organic photovoltaics (OPVs). Chapter 1 gives an introduction to charge transport in organic semiconductors, and describes how the structure of conjugated molecules can affect their electrical performance and facilitate facile solution deposition. Furthermore, factors that can affect the stability of organic semiconductors to ambient conditions are discussed. Also, the device characteristics of OFETs and OPVs are summarized as a reference for subsequent chapters. Chapter 2 discusses the investigation of the air stability of distyryl oligothiophenes in OFETs. This work made use of thermally labile solubilizing groups to facilitate solution deposition of the oligothiophenes. In addition to device characterization, an extensive analysis of the thin film morphology using AFM, NEXAFS and GIXD is presented. This work revealed the general stability of distyryl oligothiophenes to oxidative degradation, and the high degree of crystallinity in our thin films. In Chapter 3, the charge transporting properties of pentathiophene monolayer islands is analyzed using current sensing AFM. The pentathiophenes were prepared with carboxylic acid moieties for self assembly, and the sub-monolayer films were transferred onto conductive substrates using the Langmuir-Blodgett technique. The morphology of the monolayers was observed to be sensitive to the alkyl substitution pattern of the pentathiophenes, which in turn affected charge transport. Hierarchical supramolecular assemblies of oligothiophenes and block copolymers are studied in Chapter 4. The structure of the assemblies is studied by TEM and small angle X-ray scattering, confirming successful formation of supramolecular assemblies. Thin films are studied further by grazing incidence X-ray scattering, and their charge transporting properties are evaluated in OFETs. This work demonstrates that non-covalent self-assembly can be used to access nanostructured thin films of functional organic semiconductors. Finally, Chapter 5 discusses the photophysical, morphological, and electronic properties of boron(subphthalocyanine)s with conjugated axial ligands. The tendency of these materials to form polycrystalline films instead of amorphous films was shown to be very sensitive to axial ligand structure and coordination geometry. The morphology of thin films was also shown to affect OPV device characteristics, with crystalline films supplying higher photocurrents.
| Author | : Shuichiro Ogawa |
| Publisher | : Springer Nature |
| Total Pages | : 350 |
| Release | : |
| Genre | : |
| ISBN | : 4431569367 |
