Fabrication and characterization of an individual ZnO microwire-based UV photodetector

    Authors

    G. Y. Chai; L. Chow; O. Lupan; E. Rusu; G. I. Stratan; H. Heinrich; V. V. Ursaki;I. M. Tiginyanu

    Comments

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    Abbreviated Journal Title

    Solid State Sci.

    Keywords

    ZnO microwire; Photodetector; Ultraviolet UV; radiation; HUMIDITY SENSORS; Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed; Matter

    Abstract

    In this paper, a single ZnO microwire-based photodetector for the monitoring of ultraviolet (UV) radiation is described. Single crystal ZnO microwires were synthesized using a chemical vapor deposition (CVD) on the Si or Al2O3 substrate. The UV photodetector was fabricated by using in-situ lift-out method in a focused ion beam system to manipulate individual zinc oxide microwire. The photodetector prototype consists of a single ZnO microwire (20 mu m in length) and exhibits a response of similar to 10 mA/W for UV light (365 nm) under 1 V bias. The transient response measurements revealed relatively fast response. The effect of oxygen adsorption and of different relative humidity conditions on the electronic transport through individual microwire is explored and discussed. (C) 2011 Elsevier Masson SAS. All rights reserved.

    Journal Title

    Solid State Sciences

    Volume

    13

    Issue/Number

    5

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    1205

    Last Page

    1210

    WOS Identifier

    WOS:000291081900066

    ISSN

    1293-2558

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