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    题名: Supersensitive, Fast-Response Nanowire Sensors by Using Schottky Contacts
    作者: Hu, Youfan;Zhou, Jun;Yeh, Ping-Hung;Li, Zhou;Wei, Te-Yu;Wang, Zhong-Lin
    贡献者: 淡江大學物理學系
    关键词: Nanowires;Sensors;Schottky contact;Semiconductors
    日期: 2010-10
    上传时间: 2012-02-09 14:38:14 (UTC+8)
    出版者: Weinheim: Wiley - V C H Verlag GmbH & Co. KGaA
    摘要: A Schottky barrier can be formed at the interface between a metal electrode and a semiconductor. The current passing through the metal-semiconductor contact is mainly controlled by the barrier height and barrier width. In conventional nanodevices, Schottky contacts are usually avoided in order to enhance the contribution made by the nanowires or nanotubes to the detected signal. We present a key idea of using the Schottky contact to achieve supersensitive and fast response nanowire-based nanosensors. We have illustrated this idea on several platforms: UV sensors, biosensors, and gas sensors. The gigantic enhancement in sensitivity of up to 5 orders of magnitude shows that an effective usage of the Schottky contact can be very beneficial to the sensitivity of nanosensors.
    關聯: Advanced Materials 22(30), pp.3327–3332
    DOI: 10.1002/adma.201000278
    显示于类别:[物理學系暨研究所] 期刊論文

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