Solution-processed germanium nanowire-positioned Schottky solar cells
1 Nano-Mechanical Systems Research Center, Korea Institute of Machinery and Materials (KIMM), Daejeon 305343, Korea
2 Department of Electrical Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, USA
3 Measurement and Analysis Division, National Nanofab Center (NNFC), Daejeon 305806, Korea
4 Department of Chemistry, Korea University, Jochiwon 339700, Korea
Nanoscale Research Letters 2011, 6:287 doi:10.1186/1556-276X-6-287Published: 4 April 2011
Germanium nanowire (GeNW)-positioned Schottky solar cell was fabricated by a solution process. A GeNW-containing solution was spread out onto asymmetric metal electrodes to produce a rectifying current flow. Under one-sun illumination, the GeNW-positioned Schottky solar cell yields an open-circuit voltage of 177 mV and a short-circuit current of 19.2 nA. Schottky and ohmic contacts between a single GeNW and different metal electrodes were systematically investigated. This solution process may provide a route to the cost-effective nanostructure solar architecture.