Contact Behavior of Focused Ion Beam-Deposited Pt on p-type Si Nanowires
Resource
Nanotechnology, 21(12), 134008
Journal
Nanotechnology
Pages
134008
Date Issued
2010
Date
2010
Author(s)
Ho, C. Y.
Chiu, S. H.
Ke, J. J.
Tsai, K. T.
Dai, Y. A.
Hsu, J. H.
Chang, M. L.
He, J. H.
Abstract
Pt contact on p-Si nanowires (NWs) using Ga-ion-induced deposition by a focused ion beam was formed with a specific contact resistance (rho(c)) of 1.54 x 10(-6) Omega cm(2). Ohmic behavior is caused by Ga-ion-induced amorphization of Si NWs underneath the Pt contact. A very low Schottky barrier height associated with interface states raised from Pt-amorphized Si junction and with an image force induced by the applied bias can be implemented to elucidate ultralow rho(c). The value of rho(c) lower than that of any known contact to Si NWs demonstrates a practical method for integrating NWs in devices and circuits.
Type
journal article
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