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Charge and Spin Dynamics in DNA Nanomolecules: Modeling and Applications
Published in Klaus D. Sattler, st Century Nanoscience – A Handbook, 2020
Samira Fathizadeh, Sohrab Behnia
The direct injection and transport of spin carriers in metallic and semiconducting media have been reported previously [54,55]. On the other hand, organic electronics has grown into a vast research activity that has already seen success in commercial applications with organic light-emitting diodes (OLEDs). In particular, a flurry of research has recently surrounded the study of magneto-optoelectronic properties, an emerging research area referred to as ‘organic spintronics’ that has produced a range of device concepts for magnetic-field sensors [56], spin valves [57] and spin-OLEDs [58,59]. The term organic spintronics has been used to describe either the purported exchange of spin for a charge as the information carrier in devices or, more generally, for a spin and thus the magnetic field-dependent charge-transport processes [60].
Nanoimprint lithography: A competitive fabrication technique towards nanodevices
Published in David Crawley, Konstantin Nikolić, Michael Forshaw, 3D Nanoelectronic Computer Architecture and Implementation, 2020
Alicia P Kam, Clivia M Sotomayor Torres
As the limits of inorganic-based circuitry are approached, especially in respect of dimensionality, the merits of organic electronics as a low cost substitute have been realized. Though not expected to replace their inorganic counterparts in high-performance or high-density devices, the interest lies in applications where ease of fabrication, mechanical flexibility and avoidance of high temperatures are of major consideration [64]. As the transport phenomena in organics are confined to length scales in the nanometre range, downscaling the dimensionality of devices to this range is envisioned as a promising route to unleash the potential of molecular devices. These aspects motivate the investigation of NIL for organic electronics [30], especially in aiming to devices with lateral feature sizes below 100 nm and with tolerance below 10 nm. Moreover, the patterning of organic semiconductors by NIL has been demonstrated to show a lack of degradation in both electrical [65] and electro-optical [66] properties of such devices. Thus, it is within this scope that the fabrication of devices, such as organic field effect transistors and polymeric photovoltaic cells, via NIL has been undertaken.
Optics of Organic Nanomaterials
Published in Vladimir I. Gavrilenko, Optics of Nanomaterials, 2019
Presented results of QD-polymers nanostructures demonstrate that these materials could be used as polymer coating, inks for fabrication of ordered structures, envisaged optoelectronic devices, and biomaterials. Generally, the organic thin-film electronics has developed into a promising technology in the past two decades (Singh and Sariciftci, 2006). Owing to the compatibility of carbon/hydrogen-based organic semiconductors with organic biomolecules and living cells, there is a great opportunity to integrate such organic semiconductor devices with living organisms. As demonstrated next in Chapter 10, the largely independent fields of bio/life sciences and information technology can be linked to an advanced cybernetic approach, through the use of organic semiconductor devices. As the result the new bio-organic electronic devices could be proposed to be the future mission of organic electronics.
Tb(III) complexes with 1-phenyl-3-methyl-4-stearoyl-pyrazol-5-one as a material for luminescence Langmuir–Blodgett films
Published in Journal of Coordination Chemistry, 2018
Victor Shul’gin, Natalya Pevzner, Alexey Gusev, Michail Sokolov, Victor Panyushkin, Julia Devterova, Kirill Kirillov, Igor Martynenko, Wolfgang Linert
Organic electronic components have already been incorporated into products such as organic light-emitting diodes (OLEDs), displays, thin film transistors (TFTs) or flexible electronic paper. Many molecule-based materials which exhibit useful properties, usually associated to inorganic materials, such as magnetism and luminescence, have been constructed. The development of metal-supramolecular architectures is an active and diverse research field, rich in fascinating chemistry with many potential applications [3]. While historically this field has been heavily skewed towards transition metal-based systems, there is a subsection made up of lanthanide-based assemblies that have been the focal point for some research groups, owing to their well-known optical and magnetic properties. Moreover, with the current drive to develop more complex luminescent and magnetically interesting materials (e.g. luminescent cellular imaging systems, luminescent sensors, MRI contrast agents, Light Emitting Devices, Single Molecule Magnets) the use of Ln3+ ions in the assembly of complex and functional architectures have gained attention. The hard Lewis acid nature and large coordination spheres of the lanthanides suggests ligands which are rich in oxygen and nitrogen donors, providing good building blocks for supramolecular systems [4].
Effects of substrates on the performance of optoelectronic devices: A review
Published in Cogent Engineering, 2020
Joseph Asare, Benjamin Agyei-Tuffour, Evangeline A. Amonoo, David Dodoo-Arhin, Emmanuel Nyankson, Bismark Mensah, Oluwaseun O. Oyewole, Abu Yaya, Boateng Onwona-Agyeman
Paper’s multifarious applications and low cost make it an attractive material for substrate development. Paper is an ecofriendly and cheap material for many electronic applications such as the fabrication of substrate for integrated waveguides and electronic circuit ink-jet printing. (Kumar et al., 2016; Moro et al., 2012). However, it poses serious challenges in electronics due to its high optical haze and low transmittance property. In optoelectronic devices, the major concern is to increase the efficiency of light coupled into and out of the paper substrate. The combination of paper and plastic materials to form plastic-paper substrate (See Figure 5) has solved this problem by increasing the optical and haze transmittances to >85% and >90% respectively in a broadband wavelength (Yao et al., 2016). Aside from the mechanical flexibility, this new substrate is also ultra-flat and very compatible with optoelectronic device fabrication processes. (Park et al., 2016; Yao et al., 2016) Nanocellulose and 3 M™ tape materials are also used to replace conventional conducting substrates in fabricating highly efficient stretchable organic PV devices. These materials shown in Figures 6 and 7, pave ways for fully deformable PVs in wearable electronics (Chen et al., 2017; Costa et al., 2016). Finally, Metal foil substrates are predominantly used for flexible organic electronic devices. These substrates are particularly attractive in organic electronics because they provide excellent barriers to water and oxygen leading to an increase in the life span of the device. (Galagan et al., 2012) Stainless steel foil is mostly used in manufacturing OPVs because of its superior chemical resistance to other chemicals used in the fabrication process. (Galagan et al., 2012)
Self-assembled molecular devices: a minireview
Published in Instrumentation Science & Technology, 2020
As a low-cost transistor technology suitable for large-area electronic applications, the OFETs have attracted wide attention with the rapid development of organic electronic technology and the increase in demand for new and efficient organic semiconductors. The use of SiO2 on highly doped and conductive silicon wafers as grid dielectrics for insulating materials has been a hot topic in research on OFETs because SiO2 surface is very flat and provides excellent reproducibility in device manufacturing and performance.