SnS homojunction nanowire-based solar cells

Doped p–n homojunction single-crystalline SnS nanowire arrays were synthesized on an aluminum foil substrate using Au nanoparticles as the catalyst. These nanowires were fabricated into photovoltaic cells and showed a defined rectifying behavior in darkness. Under AM1.5G illumination at 100 mW cm−2, the cell had a high short-circuit photocurrent density of 7.64 mA cm−2 and energy conversion efficiency of 1.95%. This study provides an experimental demonstration for integrating one-dimensional nanostructure arrays with the substrate to fabricate homojunction photovoltaic cells directly.