Lower activation energy in organic field effect transistors with carbon nanotube contacts

    Authors

    B. K. Sarker;S. I. Khondaker

    Comments

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    Abbreviated Journal Title

    Solid-State Electron.

    Keywords

    Carbon nanotube electrode; Activation energy; Charge transport; Organic; field effect transistors; Interface; THIN-FILM TRANSISTORS; ELECTRONIC TRANSPORT; LEVEL ALIGNMENT; MORPHOLOGY; FABRICATION; INTERFACES; Engineering, Electrical & Electronic; Physics, Applied; Physics, ; Condensed Matter

    Abstract

    We study temperature dependent charge transport properties of pentacene field effect transistors (FET) with carbon nanotube (CNT) electrodes. The field effect mobilities at different temperatures and gate voltages follow activated hopping behavior from which we calculate an activation energy of 48 meV for the CNT contacted pentacene FET. This value is lower than that of our control Pd contacted pentacene FET device (83 meV). The lower activation energy of the CNT contacted devices is attributed to improved CNT/pentacene interface. (C) 2014 Elsevier Ltd. All rights reserved.

    Journal Title

    Solid-State Electronics

    Volume

    99

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    55

    Last Page

    58

    WOS Identifier

    WOS:000340220500012

    ISSN

    0038-1101

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