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    Selective growth of ZnO nanorods on microgap electrodes and their applications in UV sensors

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    Date
    2014-01
    Author
    Qazi Muhammad, Humayun
    Muhammad Kashif, Muhammad Faroow
    Uda, Hashim, Prof. Dr.
    Ahsanulhaq, Qurashi
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    Abstract
    Selective area growth of ZnO nanorods is accomplished on microgap electrodes (spacing of 6μm) by using a facile wet chemical etching process. The growth of ZnO nanorods on a selected area of microgap electrode is carried out by hydrothermal synthesis forming nanorod bridge between two electrodes. This is an attractive, genuine, direct, and highly reproducible technique to grow nanowire/nanorod onto the electrodes on selected area. The ZnO nanorods were grown at 90°C on the pre-pa tterned electrode system without destroying the electrode surface structure interface and geometry. The ZnO nanorods were tested for their application in ultraviolet (UV) sensors. The photocurrent-to-dark (Iph/Id) ratio was 3.11. At an applied voltage of 5 V, the response and recovery time was 72 and 110 s, respectively, and the response reached 2 A/W. The deposited ZnO nanorods exhibited a UV photoresponse that is promising for future cost-effective and low-power electronic UV-sensing applications
    URI
    http://dspace.unimap.edu.my:80/dspace/handle/123456789/35409
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    • Qazi Muhammad Humayun, Dr. [10]
    • Uda Hashim, Prof. Ts. Dr. [243]
    • Institute of Nano Electronic Engineering (INEE) (Articles) [206]

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