Negative differential resistance in ZnO coated peptide nanotube

    Authors

    D. Joung; L. Anjia; H. Matsui;S. I. Khondaker

    Comments

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    Abbreviated Journal Title

    Appl. Phys. A-Mater. Sci. Process.

    Keywords

    OPTICAL-PROPERTIES; ZINC-OXIDE; ELECTRODES; NANOPARTICLES; SILICON; PHOTOEXCITATION; NANOWIRES; MOLECULES; MECHANISM; TRANSPORT; Materials Science, Multidisciplinary; Physics, Applied

    Abstract

    We investigate the room temperature electronic transport properties of a zinc oxide (ZnO) coated peptide nanotube contacted with Au electrodes. Current-voltage (I-V) characteristics show asymmetric negative differential resistance (NDR) behavior along with current rectification. The NDR phenomenon is observed in both negative and positive voltage sweep scans, and found to be dependent on the scan rate and humidity. Our results suggest that the NDR is due to protonic conduction arising from water molecule redox reaction on the surface of ZnO coated peptide nanotubes rather than the conventional resonant tunneling mechanism.

    Journal Title

    Applied Physics a-Materials Science & Processing

    Volume

    112

    Issue/Number

    2

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    305

    Last Page

    310

    WOS Identifier

    WOS:000321784500011

    ISSN

    0947-8396

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