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    Nanoscale Ion-Doped Polymer Transistors

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    Type
    Article
    Authors
    Thiburce, Quentin
    Giovannitti , Alexander
    McCulloch, Iain cc
    Campbell, Alasdair J.
    KAUST Department
    Chemical Science Program
    KAUST Solar Center (KSC)
    Physical Science and Engineering (PSE) Division
    Date
    2019-02-05
    Online Publication Date
    2019-02-05
    Print Publication Date
    2019-03-13
    Permanent link to this record
    http://hdl.handle.net/10754/631022
    
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    Abstract
    Organic transistors with submicron dimensions have been shown to deviate from the expected behaviour due to a variety of so-called ‘short-channel’ effects, resulting in nonlinear output characteristics and a lack of current saturation, considerably limiting their use. Here, using an electrochemically-doped polymer in which ions are dynamically injected and removed from the bulk of the semiconductor, we show that devices with nanoscale channel lengths, down to 50 nm, exhibit output curves with well-defined linear and saturation regimes. Additionally, they show very large on-currents on par with their microscale counterparts, large on-to-off ratios of 108, and record-high width-normalised transconductances above 10 S m−1. We believe this work paves the way for the fabrication of high-gain, high-current polymer integrated circuits such as sensor arrays operating at voltages below |1 V| and prepared using simple solution processing methods.
    Citation
    Thiburce Q, Giovannitti A, McCulloch I, Campbell AJ (2019) Nanoscale Ion-Doped Polymer Transistors. Nano Letters. Available: http://dx.doi.org/10.1021/acs.nanolett.8b04717.
    Sponsors
    This work was supported by the European Commission’s 7th Framework Programme (FP7/2007-2013) under grant agreement no. 607896 (OrgBIO). We also thank J. Cambiasso for helpful discussions on electron-beam lithography and for helping with SEM imaging.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/acs.nanolett.8b04717
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.nanolett.8b04717
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.nanolett.8b04717
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Solar Center (KSC)

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