Current-voltage characteristics in dark condition. The dark I-V characteristics of (a) Pt-GeNW-Pt, (b) Al-GeNW-Al, and (c) Pt-GeNW-Al. Ohmic current flows were achieved from the symmetric metal contacts while the asymmetric Pt-Al contacts provide a rectifying current flow due to the Schottky junction.
Yun et al. Nanoscale Research Letters 2011 6:287 doi:10.1186/1556-276X-6-287