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Tuning the Photoresponse in Organic Field-Effect Transistors

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TLDR
The analysis of different morphologies of the active semiconducting layer revealed that single PDI fibers exhibit the higher photoresponse when compared to more poorly organized films, representing a step forward toward the use of organic based phototransistors as photosensors.
Abstract
We report on the fabrication of solution-processed organic phototransistors (OPTs) based on perylenebis(dicarboximide)s (PDIs). We found that the responsivity to the photoillumination depends on the transistor’s channel length and that it can be tuned by varying the device geometry. The analysis of different morphologies of the active semiconducting layer revealed that single PDI fibers exhibit the higher photoresponse when compared to more poorly organized films. The highest responsivity value of 4.08 ± 1.65 × 105 A/W was achieved on a multifiber-based OPT. These findings represent a step forward toward the use of organic based phototransistors as photosensors.

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Organic Optoelectronic Materials: Mechanisms and Applications

TL;DR: The article reviews the current understanding of the physical mechanisms that determine the (opto)electronic properties of high-performance organic materials and highlights the capabilities of various experimental techniques for characterization, summarizes top-of-the-line device performance, and outlines recent trends in the further development of the field.
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Ultrathin Air-Stable n-Type Organic Phototransistor Array for Conformal Optoelectronics.

TL;DR: The ultrathin conformal OPT array based on air-stable n-type PTCDI-C13H27 was fabricated and shows excellent electrical and photoelectrical performance, good device uniformity, and remains stable in electron mobility by 83% after 90 days compared to the initial values.
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Supramolecular self-assemblies as functional nanomaterials

TL;DR: This compilation illustrates how, based on the rules of supramolecular chemistry, the bottom-up approach to design functional objects at the nanoscale is currently producing highly sophisticated materials oriented towards a growing number of applications with high societal impact.
Journal ArticleDOI

High-Performance Phototransistors Based on Single-Crystalline n-Channel Organic Nanowires and Photogenerated Charge-Carrier Behaviors

TL;DR: In this paper, the photoelectronic characteristics of single-crystalline nanowire organic phototransistors (NW-OPTs) were studied using a high-performance n-channel organic semiconductor, N,N′-bis(2-phenylethyl)-perylene-3,4:9,10-tetracarboxylic diimide (BPE-PTCDI), as the photoactive layer.
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Frontiers in circularly polarized luminescence: molecular design, self-assembly, nanomaterials, and applications

TL;DR: The research in circularly polarized luminescence has attracted wide interest in recent years as mentioned in this paper, and the development of chiral emissive materials based on organic small molecules, compounds with aggregation-induced emissions, supramolecular assemblies, liquid crystals and liquids, polymers, metal-ligand coordination complexes and assemblies, metal clusters, inorganic nanomaterials, and photon upconversion systems.
References
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Journal ArticleDOI

Perylene bisimide dyes as versatile building blocks for functional supramolecular architectures

TL;DR: Perylene bisimide dyes and their organization into supramolecular architectures through hydrogen-bonding, metal ion coordination and pi-pi-stacking is discussed; further self-assembly leading to nano- and meso-scopic structures and liquid-crystalline compounds is also addressed.
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n-Type organic semiconductors in organic electronics.

TL;DR: This paper focuses upon recent developments in several classes of n-type materials and the design guidelines used to develop them.
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Molecular Materials by Self‐Assembly of Porphyrins, Phthalocyanines, and Perylenes

TL;DR: A review of some recent efforts to construct highly ordered assemblies of porphyrins, phthalocyanines, and perylenes by means of self-assembly in solution and on surfaces, and by attaching them to polymeric scaffolds is given in this paper.
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Functional organic field-effect transistors.

TL;DR: The history, current status of research, main challenges and prospects for functional OFETs are all discussed, in order to provide a comprehensive overview of this field.
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