There is an increasing interest in finding novel concepts for increasing the efficiency-to-cost ratio in solar cell devices. Among the different possibilities, semiconductor nanowires have shown to provide various paths towards this goal.
In this talk, I will discuss different aspects in considering semiconductor nanowires for next generation photovoltaics:
Increased device freedom for optimizing the carrier extraction and light absorption.
A self-concentrating effect which provides the potential to surpass the Shockley-Queisser limit .
Three-dimensional-heterostructure design in up-conversion strategies .
 P. Krogstrup et al, Nature Photon, 7, 306 ( 2013)