The light concentrating properties of single p-i-n GaAs nanowires are shown to result in far greater photocurrent densities than expected under one sun illumination. The results suggest that such cells could in principle operate with power conversion efficiencies beyond the Shockley–Queisser limit.
- Peter Krogstrup
- Henrik Ingerslev Jørgensen
- Anna Fontcuberta i Morral