Bar-Coated Ultrathin Semiconductors from Polymer Blend for One-Step Organic Field-Effect Transistors.
06 Jun 2018-ACS Applied Materials & Interfaces (American Chemical Society)-Vol. 10, Iss: 25, pp 21510-21517
TL;DR: One-step deposition of bi-functional semiconductor-dielectric layers for organic field effect transistors (OFETs) is an effective way to simplify the device fabrication.
Abstract: One-step deposition of bi-functional semiconductor–dielectric layers for organic field-effect transistors (OFETs) is an effective way to simplify the device fabrication. However, the proposed method has rarely been reported in large-area flexible organic electronics. Herein, we demonstrate wafer-scale OFETs by bar coating the semiconducting and insulating polymer blend solution in one-step. The semiconducting polymer poly(3-hexylthiophene) (P3HT) segregates on top of the blend film, whereas dielectric polymethyl methacrylate (PMMA) acts as the bottom layer, which is achieved by a vertical phase separation structure. The morphology of blend film can be controlled by varying the concentration of P3HT and PMMA solutions. The wafer-scale one-step OFETs, with a continuous ultrathin P3HT film of 2.7 nm, exhibit high electrical reproducibility and uniformity. The one-step OFETs extend to substrate-free arrays that can be attached everywhere on varying substrates. In addition, because of the well-ordered molecula...
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TL;DR: An all-inclusive review of the newly developed WFHE along with a summary of imperative requirements of material properties, sensor capabilities, electronics performance, and skin integrations is provided.
Abstract: Recent advances in soft materials and system integration technologies have provided a unique opportunity to design various types of wearable flexible hybrid electronics (WFHE) for advanced human healthcare and human-machine interfaces. The hybrid integration of soft and biocompatible materials with miniaturized wireless wearable systems is undoubtedly an attractive prospect in the sense that the successful device performance requires high degrees of mechanical flexibility, sensing capability, and user-friendly simplicity. Here, the most up-to-date materials, sensors, and system-packaging technologies to develop advanced WFHE are provided. Details of mechanical, electrical, physicochemical, and biocompatible properties are discussed with integrated sensor applications in healthcare, energy, and environment. In addition, limitations of the current materials are discussed, as well as key challenges and the future direction of WFHE. Collectively, an all-inclusive review of the newly developed WFHE along with a summary of imperative requirements of material properties, sensor capabilities, electronics performance, and skin integrations is provided.
554 citations
TL;DR: OFETs are revealed to be one of the best systems for mimicking sensory and nervous systems and their applications in biomimetic systems and future challenges in this research area are provided.
Abstract: The emergence of flexible organic electronics that span the fields of physics and biomimetics creates the possibility for increasingly simple and intelligent products for use in everyday life. Organic field-effect transistors (OFETs), with their inherent flexibility, light weight, and biocompatibility, have shown great promise in the field of biomimicry. By applying such biomimetic OFETs for the internet of things (IoT) makes it possible to imagine novel products and use cases for the future. Recent advances in flexible OFETs and their applications in biomimetic systems are reviewed. Strategies to achieve flexible OFETs are individually discussed and recent progress in biomimetic sensory systems and nervous systems is reviewed in detail. OFETs are revealed to be one of the best systems for mimicking sensory and nervous systems. Additionally, a brief discussion of information storage based on OFETs is presented. Finally, a personal view of the utilization of biomimetic OFETs in the IoT and future challenges in this research area are provided.
132 citations
TL;DR: In this article, the authors thank the ERCStG 2012•306826 eGames project, the Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER•BBN), the DGI (Spain) project, FANCY CTQ2016•80030•R, the Generalitat de Catalunya (2017•SGR‐918), and the Spanish Ministry of Economy and Competitiveness, through the “Severo Ochoa” Programme for Centres of Excellence in R
Abstract: The authors thank the ERCStG 2012‐306826 e‐GAMES project, the Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER‐BBN), the DGI (Spain) project, FANCY CTQ2016‐80030‐R, the Generalitat de Catalunya (2017‐SGR‐918), and the Spanish Ministry of Economy and Competitiveness, through the “Severo Ochoa” Programme for Centres of Excellence in R&D (SEV‐2015‐0496). F.L. and R.P. gratefully acknowledge the “Juan de la Cierva” programme. The authors thank Dr. Xenofon Strakosas for his help with the TOC image.
78 citations
TL;DR: In this paper, a DPP-based material with polymer as additive was carried out to fabricate self-assembly organic crystals, by optimizing the blend ratios and concentrations of the solution, well aligned, high quality crystals were successfully achieved.
63 citations
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