Gigantic enhancement in response and reset time of ZnO UV nanosensor by utilizing Schottky contact and surface functionalization

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1853/30242

Title: Gigantic enhancement in response and reset time of ZnO UV nanosensor by utilizing Schottky contact and surface functionalization
Author: Zhou, Jun ; Gu, Yudong ; Hu, Youfan ; Mai, Wenjie ; Yeh, Ping-Hung ; Bao, Gang ; Sood, Ashok K. ; Polla, Dennis L. ; Wang, Z. L. (Zhong Lin)
Abstract: UV response of ZnO nanowire nanosensor has been studied under ambient condition. By utilizing Schottky contact instead of Ohmic contact in device fabrication, the UV sensitivity of the nanosensor has been improved by four orders of magnitude, and the reset time has been drastically reduced from ~417 to ~0.8 s. By further surface functionalization with function polymers, the reset time has been reduced to ~20 ms even without correcting the electronic response of the measurement system. These results demonstrate an effective approach for building high response and fast reset UV detectors.
Description: ©2009 American Institute of Physics. The electronic version of this article is the complete one and can be found online at: http://link.aip.org/link/?APPLAB/94/191103/1 DOI: 10.1063/1.3133358
Type: Article
URI: http://hdl.handle.net/1853/30242
ISSN: 0003-6951
Citation: Jun Zhou, Yudong Gu, Youfan Hu, Wenjie Mai, Ping-Hung Yeh, Gang Bao, Ashok K. Sood, Dennis L. Polla, and Zhong Lin Wang, "Gigantic enhancement in response and reset time of ZnO UV nanosensor by utilizing Schottky contact and surface functionalization," Applied Physics Letters 94 (2009) 191103
Date: 2009-05-11
Contributor: Georgia Institute of Technology. School of Materials Science and Engineering
Georgia Institute of Technology. Dept. of Biomedical Engineering
Emory University. Dept. of Biomedical Engineering
Magnolia Optical Technologies
Peking University. Dept. of Advanced Materials and Nanotechnology
United States. Defense Advanced Research Projects Agency
Publisher: Georgia Institute of Technology
American Institute of Physics

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