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Nanotechnology. 2009 Apr 1;20(13):135701. doi: 10.1088/0957-4484/20/13/135701. Epub 2009 Mar 11.

Electrical and optoelectronic characterization of a ZnO nanowire contacted by focused-ion-beam-deposited Pt.

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1
Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 106, Taiwan, Republic of China. jhhe@cc.ee.ntu.edu.tw

Abstract

We report on the transport properties of a single ZnO nanowire (NW) measured as a function of the length/square of the radius ratio via the transmission line method (TLM). The specific contact resistance of FIB-Pt contacts to the ZnO NWs is determined to be as low as 1.1 x 10(-5) Omega cm(2). The resistivity of the ZnO NWs is measured to be 2.2 x 10(-2) Omega cm. ZnO NW-based UV photodetectors contacted by FIB-Pt with a photoconductive gain as high as approximately 10(8) have been fabricated and characterized.

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