Journal ArticleDOI
Operationally Stable Organic FETs With Bilayer Dielectrics on Low-Cost Flexible Polyimide Substrate
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TLDR
In this paper, organic FETs with bilayer dielectric poly(4-vinylphenol) and polyvinyl alcohol (PVA)/HfO2 were fabricated on a flexible low-cost Kapton tape substrate with TIPS -pentacene:polystyrene as an active layer.Abstract:
Organic FETs (OFETs) with bilayer dielectric poly(4-vinylphenol) (PVP)/HfO2 and polyvinyl alcohol (PVA)/HfO2 were fabricated on a flexible low-cost Kapton tape substrate with TIPS -pentacene:polystyrene as an active layer. The devices exhibited average and maximum field-induced mobility of 0.25(±0.10) and 0.37 cm $^{{{2}}}\text{V}^{{-{1}}}\,\,\text{s}^{{-{1}}}$ for PVP/HfO2 devices, and 0.35(±0.18) and 0.69 cm $^{{{2}}}\text{V}^{{-{1}}}\,\,\text{s}^{{-{1}}}$ for PVA/HfO2 devices, respectively, with low threshold voltage and ${I}_{ \mathrm{\scriptscriptstyle ON}}$ to ${I}_{ \mathrm{\scriptscriptstyle OFF}}$ ratio approaching $10^{{{4}}}$ for both types of devices. Overlapping transfer multiple scans with very less performance variation under ambient conditions were observed. The devices were found to be fairly stable even when electrical stress was applied after a period of 5 months. Devices exhibited small degradation in ${I} _{{\text {DS}}}$ and small $\Delta {V} _{{\text {TH}}}$ with high degree of reliability and small performance spreads under combined effects of ambient exposure over a period of 5 months and successive electrical stress. In addition, inverter based on these OFETs with external load was also demonstrated.read more
Citations
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Journal ArticleDOI
High Performance Flexible Transistors With Polyelectrolyte/Polymer Bilayer Dielectric
TL;DR: In this paper , flexible organic field effect transistors (OFETs) consisting of polyvinyl alcohol (PVA)/ polyelectrolyte polyacrylic acid (PAA) bilayer gate dielectric are demonstrated.
Journal ArticleDOI
High Performance Flexible Organic Field-Effect Transistors with Barium Strontium Titanate Gate Dielectric Deposited at Room Temperature
Vivek Raghuwanshi,Deepak Bharti,Ajay Kumar Mahato,Amit Kumar Shringi,Ishan Varun,Shree Prakash Tiwari +5 more
TL;DR: In this paper, the authors have discussed the crucial factors in the progression of organic field-effect transistors (OFETs) in flexible portable applications, including operating voltage and processing temperature.
Lamination of Flexible Organic Transistors on Fabric for E-Textile
TL;DR: In this article , flexible organic field effect transistors (OFETs) based on solution-processed TIPS-Pentacene as semiconductor and high field effect mobility were successfully demonstrated on fabric for future electronic textile (e-textile) applications.
Journal ArticleDOI
Rapid Charge Storage and Release at Etching‐Assist Electret in Organic Transistors for Memories, Photodetectors, and Artificial Synapses
TL;DR: In this article , a soft plasma-treated polymer polystyrene (PS) surface is treated with soft plasma, which selectively induces a high density of charge traps at the top surface without changing the electronic properties of the underneath materials.
Journal ArticleDOI
Lamination of Flexible Organic Transistors on Fabric for E-Textile
TL;DR: Flexible organic field effect transistors (OFETs) based on solution-processed TIPS-Pentacene as semiconductor and high-voltage P(VDF-TrFE) gate dielectric are successfully demonstrated on fabric for future electronic textile (e-textile) applications as mentioned in this paper .
References
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Solution coating of large-area organic semiconductor thin films with aligned single-crystalline domains
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Journal ArticleDOI
High-k organic, inorganic, and hybrid dielectrics for low-voltage organic field-effect transistors.
TL;DR: A comparison study of high-k Dielectric Materials for OFETs using self-Assembled Monoand Multilayers and Inorganic-Organic Bilayers to study the properties of polymeric-Nanoparticle Composites.
Journal ArticleDOI
High mobility solution processed 6,13-bis(triisopropyl-silylethynyl) pentacene organic thin film transistors
TL;DR: In this article, a solution-processed organic thin film transistors (OTFTs) with carrier mobility > 1cm2∕Vs, current on/off ratio greater than 107, and subthreshold slope < 0.3V/decade were fabricated.
Journal ArticleDOI
Effects of hydroxyl groups in polymeric dielectrics on organic transistor performance
TL;DR: In this article, the effect of hydroxyl groups on the electrical properties of pentacene-based organic thin film transistors (OTFTs) was investigated and it was confirmed that large hysteresis usually observed in OTFT devices was strongly related to the hydroxy bonds existing inside of polymeric dielectrics and could be reduced by substituting with cinnamoyl groups.
Journal ArticleDOI
High operational and environmental stability of high-mobility conjugated polymer field-effect transistors through the use of molecular additives.
Mark Nikolka,Iyad Nasrallah,Bradley D. Rose,Mahesh Kumar Ravva,Katharina Broch,Aditya Sadhanala,David Harkin,Jerome Charmet,Michael Hurhangee,Adam J. Brown,Steffen Illig,Patrick Too,Jan Jongman,Iain McCulloch,Iain McCulloch,Jean-Luc Brédas,Henning Sirringhaus +16 more
TL;DR: It is shown that water incorporated in nanometre-sized voids within the polymer microstructure is the key factor in charge trapping and device degradation and by inserting molecular additives that displace water from these voids, it is possible to increase the stability as well as uniformity to a high level sufficient for demanding industrial applications.