In recent decades, the way human beings interact with technology has been significantly transformed. In our daily life, ever fewer manually controlled devices are used, giving way to automatized houses, cars, and devices. A significant part of this technological revolution relies on signal detection and evaluation, placing detectors as core devices for further technological developments. This book introduces a versatile contribution to achieving light sensing: Organic Semiconductor Devices for Light Detection. The text is organized to guide the reader through the main concepts of light detection, followed by a introduction to the semiconducting properties of organic molecular solids. The sources of non-idealities in organic photodetectors are presented in chapter 5, and a new device concept, which aims to overcome some of the limitation discussed in the previous chapters, is demonstrated. Finally, an overview of the field is given with a selection of open points for future investigation.
Organic semiconductors offer unique characteristics which have prompted the application of organic semiconductors and their devices in physical, chemical, and biological sensors. This book covers this emerging field by discussing both optically- and electrically-based sensor concepts. Novel transducers based on organic light-emitting diodes and organic thin-film transistors, as well as systems-on-a-chip architectures are presented. Functionalization techniques are also outlined.
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
This book is a collection of selected papers and book sections on recent developments and research on organic electronic devices. Most articles were published in the years 2015-2017. While organic semiconductors tend to lack somewhat behind their inorganic counterparts with respect to charge-carrier mobility, stability, and efficient operation, the prospect of low cost, large-scale production of flexible electronic devices continues to fuel increasing research. Organic light emitting devices (OLEDs) have already found commercial applications in modern large screen television/touch-screens, and they are now entering the market for lighting applications too. After a brief introduction of organic semiconductor devices with an overview of the selected papers by the editor, the chosen publications are organized into four thematic sections.Section 1 focuses on light-sensing devices. Organic compounds tend to absorb light much stronger than inorganic materials for a given wavelength range. The first paper reviews the development and known physical principles of organic solar energy harvesting devices. While solar cells are designed to convert sunlight into electric power, photodetectors only need to detect light. They can therefore use an external bias voltage to improve their light-sensing characteristics. This enables their use as spectrometer-on-a-chip that opens the door to many analytical/biological applications, which are discussed at the end of this section. Section 2 is dedicated to light-emitting device structures. The first part summarizes the process of light extraction and polarization, as well as improvements using interference effects due to regular nanoscale structuring (photonic structures). This is followed by measures to improve not only OLEDs, but also organic lasers, and the properties of organic light emitting field-effect transistors. Section 3, light-independent devices, is dedicated to device types that do not fit into any of the first two categories. This section includes true bulk", flexible, yet robust mixed ionic-electronic conductor paper, which may enable mass power storage a very sensitive ionic thermo-sensor (transistor), a simultaneous temperature/pressure sensor, and an ultrathin organic CMOS D-flip-flop circuit.Section 4 summarizes recent progress in organic device manufacturing techniques. Discussed topics include: the accurate alignment during high-throughput roll-to-roll printing, directional self-assembling of polymer chains, patterning of organic conductors on textiles, spray printing of organic semiconducting single crystals, solution printing of organic semiconductor blends that show transport properties on par with single crystals.
This thesis focuses on two areas - the development of miniature plastic lasers that can be powered by LEDs, and the application of these lasers as highly sensitive sensors for vapours of nitroaromatic explosives (e.g. TNT). Polymer lasers are extremely compact visible lasers; the research described in the thesis is groundbreaking, driving forward the technology and physical understanding to allow these lasers to be routinely pumped by a single high-power LED. A notable advance in the work is the demonstration of nanoimprinted polymer lasers, which exhibit the world's lowest pump threshold densities by two orders of magnitude. The thesis also advances the application of these compact, novel lasers as highly sensitive detectors of explosive vapours, demonstrating that rapid detection can be achieved when microporous polymers are used. This work also demonstrates a prototype CMOS-based microsystem sensor for explosive vapours, exploiting a new detection approach.
Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. The latest in organic electronics-based sensing and biotechnology Develop high-performance, field-deployable organic semiconductor-based biological, chemical, and physical sensor arrays using the comprehensive information contained in this definitive volume. Organic Electronics in Sensors and Biotechnology presents state-of-the-art technology alongside real-world applications and ongoing R & D. Learn about light, temperature, and pressure monitors, integrated flexible pyroelectric sensors, sensing of organic and inorganic compounds, and design of compact photoluminescent sensors. You will also get full details on organic lasers, organic electronics in memory elements, disease and pathogen detection, and conjugated polymers for advancing cellular biology. Monitor organic and inorganic compounds with OFETs Characterize organic materials using impedance spectroscopy Work with organic LEDs, photodetectors, and photovoltaic cells Form flexible pyroelectric sensors integrated with OFETs Build PL-based chemical and biological sensing modules and arrays Design organic semiconductor lasers and memory elements Use luminescent conjugated polymers as optical biosensors Deploy polymer-based switches and ion pumps at the microfluidic level
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.
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
