Figure 3From: Solution-processed germanium nanowire-positioned Schottky solar cells 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.Back to article page