Atmosphere pressure dependent electrical properties of the ZnO nanowire transistors

E. K. Kim, H. Y. Lee, J. Park, S. E. Moon, S. Maeng, K. H. Park, H. J. Ji, S. J. Park, G. T. Kim

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Semiconducting nanowire devices were fabricated using photolithography and e-beam lithography, and their electrical properties were studied. Atmosphere pressure dependent electrical properties of the ZnO nanowire field effect transistor (FET) were studied and its analysis methods with PSPICE simulation were applied to explain the conductance changes in nanowire devices. A single ZnO nanowire FET was fabricated by electron beam lithography and its current-voltage characteristics were recorded with varying the atmosphere pressure to test the possible applications as a chemical gas sensor. Current-voltage characteristics showed typical non-ohmic behaviors, reflecting the influence of the contact barriers formed between the ZnO nanowire FET and metal electrodes. In this paper, an equivalent circuit model of the ZnO nanowire FET is suggested in order to model the contact barriers in nanowire devices, showing that most changes of the electrical conductance might originate from the contact region.

    Original languageEnglish
    Title of host publication2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
    Pages428-429
    Number of pages2
    DOIs
    Publication statusPublished - 2006
    Event2006 IEEE Nanotechnology Materials and Devices Conference, NMDC - Gyeongju, Korea, Republic of
    Duration: 2006 Oct 222006 Oct 25

    Publication series

    Name2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
    Volume1

    Other

    Other2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
    Country/TerritoryKorea, Republic of
    CityGyeongju
    Period06/10/2206/10/25

    Keywords

    • Equivalent circuit
    • Field effect transisor
    • ZnO nanowire

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • General Materials Science

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