TIPS-pentacene/Copper (II) phthalocyanine bi-layer photo sensitive organic field-effect transistors
TL;DR: In this article, a combination of a thin layer of copper (II) phthalocyanine (CuPc) and TIPS-pentacene crystal was used to enhance the photo-sensing spectrum of photo-sensitive organic field effect transistors (photo-OFETs).
About: This article is published in Synthetic Metals.The article was published on 2019-02-01. It has received 9 citations till now. The article focuses on the topics: Phthalocyanine & Pentacene.
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01 Jan 2020
40 citations
TL;DR: In this article, a facile route to regulate the crystallization and enhance charge transport of small-molecule organic semiconductors by blending with a rubbery polymer additive polyisobutylene (PIB) was reported.
17 citations
TL;DR: The ONRPT, which leads itself to outstanding electrical and favorably stable performance, opens up a plethora of opportunities for high efficiency energy devices, and allows for the nanowire applications in solar cell, piezo-photonic detectors, and optical modulators.
Abstract: High-responsivity photodevices are strongly desired for various demanding applications, such as optical communications, logic circuits, and sensors. The use of quantum and photon confinement has enabled a true revolution in the development of high-performance devices. Unfortunately, many practical optoelectronic devices exhibit intermediate sizes where resonant enhancement effects seem to be insignificant. Here we design and fabricate an ultra-high-responsivity organic-light-emitting-diode-induced nanowire resonance phototransistor (ONRPT) based on standing-wave resonance in the nanoscale cavity, subjected to a near-field light. Observations of the ONRPT in standing-wave resonance mode indicate a >104 enhancement in the on/off ratio and a six times higher subthreshold slope when compared with the ONRPT in non-resonance mode. The ONRPT, which leads itself to outstanding electrical and favorably stable performance, opens up a plethora of opportunities for high-efficiency energy devices and allows for nanowire applications in the solar cell, piezo-photonic detectors, and optical modulators.
13 citations
26 Jan 2021
TL;DR: In this article, a hydrogen-bridged dinuclear monoorganostannoxane was obtained by the reaction of RSnCl3 (R = 2-phenylazophenyl) with sodium hydroxide in...
Abstract: Hydroxido-bridged dinuclear monoorganostannoxane [(RSnIV)2(μ-OH)(μ-OMe)Cl4]·CH3OH (R = 2-phenylazophenyl) (1) was obtained by the reaction of RSnCl3 (R = 2-phenylazophenyl) with sodium hydroxide in...
7 citations
TL;DR: In this article, a bilayer gate insulator consisting of polyvinyl alcohol (PVA) and methyl methacrylate co glycidyl methACrylate (P(MMA-GMA) was used to improve the dielectric properties of the composite insulator.
4 citations
References
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TL;DR: Flexible active-matrix monochrome electrophoretic displays based on solution-processed organic transistors on 25-μm-thick polyimide substrates based on 1,888 transistors are demonstrated, which are the largest organic integrated circuits reported to date.
Abstract: At present, flexible displays are an important focus of research1,2,3 Further development of large, flexible displays requires a cost-effective manufacturing process for the active-matrix backplane, which contains one transistor per pixel One way to further reduce costs is to integrate (part of) the display drive circuitry, such as row shift registers, directly on the display substrate Here, we demonstrate flexible active-matrix monochrome electrophoretic displays based on solution-processed organic transistors on 25-μm-thick polyimide substrates The displays can be bent to a radius of 1 cm without significant loss in performance Using the same process flow we prepared row shift registers With 1,888 transistors, these are the largest organic integrated circuits reported to date More importantly, the operating frequency of 5 kHz is sufficiently high to allow integration with the display operating at video speed This work therefore represents a major step towards 'system-on-plastic'
1,577 citations
TL;DR: Flexible suspended gate organic thin-film transistors (SGOTFTs) are presented as a model platform that enables ultra-sensitive pressure detection and their excellent sensing properties, together with their advantages of facile large-area fabrication and versatility in detecting various pressure signals, make them a powerful strategy for spatial pressure mapping in practical applications.
Abstract: The utilization of organic devices as pressure-sensing elements in artificial intelligence and healthcare applications represents a fascinating opportunity for the next-generation electronic products. To satisfy the critical requirements of these promising applications, the low-cost construction of large-area ultra-sensitive organic pressure devices with outstanding flexibility is highly desired. Here we present flexible suspended gate organic thin-film transistors (SGOTFTs) as a model platform that enables ultra-sensitive pressure detection. More importantly, the unique device geometry of SGOTFTs allows the fine-tuning of their sensitivity by the suspended gate. An unprecedented sensitivity of 192 kPa(-1), a low limit-of-detection pressure of <0.5 Pa and a short response time of 10 ms were successfully realized, allowing the real-time detection of acoustic waves. These excellent sensing properties of SGOTFTs, together with their advantages of facile large-area fabrication and versatility in detecting various pressure signals, make SGOTFTs a powerful strategy for spatial pressure mapping in practical applications.
462 citations
TL;DR: This tutorial review intends to provide readers with a deep understanding for the future design of high-quality OFET gas sensors for potential uses.
Abstract: Organic field-effect transistors (OFETs) are one of the key components of modern organic electronics. While the past several decades have witnessed huge successes in high-performance OFETs, their sophisticated functionalization with regard to the responses towards external stimulations has also aroused increasing attention and become an important field of general concern. This is promoted by the inherent merits of organic semiconductors, including considerable variety in molecular design, low cost, light weight, mechanical flexibility, and solution processability, as well as by the intrinsic advantages of OFETs including multiparameter accessibility and ease of large-scale manufacturing, which provide OFETs with great potential as portable yet reliable sensors offering high sensitivity, selectivity, and expeditious responses. With special emphases on the works achieved since 2009, this tutorial review focuses on OFET-based gas sensors. The working principles of this type of gas sensors are discussed in detail, the state-of-the-art protocols developed for high-performance gas sensing are highlighted, and the advanced gas discrimination systems in terms of sensory arrays of OFETs are also introduced. This tutorial review intends to provide readers with a deep understanding for the future design of high-quality OFET gas sensors for potential uses.
351 citations
TL;DR: In this paper, the authors explain the complex relationship between π-π stacking and other types of molecular interactions and its influence on charge transport properties, and give some typical examples illustrating the strategy of controlling π−π stacking in single crystals.
Abstract: Because of their resolvable crystal structure, organic conjugated small molecules are intrinsically ideal for elucidating the relationship between microstructures and charge transport properties. It has been reported that the charge transport properties depend on molecular structure and molecular packing. In the solid state, π–π stacking of small molecules is significant in the charge transport process. Since π–π stacking of conjugated small molecules is influenced at different degrees by other intra- and intermolecular interactions, as a result, π–π stacking and further the charge transport properties can be controlled or tuned by crystal engineering through precise chemical modification. In this perspective, we give some typical examples illustrating the strategy of controlling π–π stacking in single crystals. Furthermore, we attempt to clarify the complex relationship between π–π stacking and other types of molecular interactions, and its influence on charge transport properties.
222 citations
TL;DR: These bar-coated ultrathin films are capable of realizing highly sensitive multigas sensors and represent the first successful report of ethylene detection using a sensor based on organic field-effect transistors.
Abstract: A uniform ultrathin polymer film is deposited over a large area with molecularlevel precision by the simple wire-wound bar-coating method. The bar-coated ultrathin films not only exhibit high transparency of up to 90% in the visible wavelength range but also high charge carrier mobility with a high degree of percolation through the uniformly covered polymer nanofibrils. They are capable of realizing highly sensitive multigas sensors and represent the first successful report of ethylene detection using a sensor based on organic field-effect transistors.
173 citations