Supersensitive, Fast-Response Nanowire Sensors by Using Schottky Contacts

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題名:	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
貢獻者:	淡江大學物理學系
關鍵詞:	Nanowires;Sensors;Schottky contact;Semiconductors
日期:	2010-10
上傳時間:	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
顯示於類別:	[物理學系暨研究所] 期刊論文

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