An EES article on a model system for achieving highly efficient solar cells which comprise lots of independent stacked units which rival the state of the art for cell performance when irradiated from the side has been featured on e! Science News.
To date systems of this type are made from direct band gap III–V semiconductors connected in series, which is much more complex to engineer.
Read more about this fascinating research today:
Multiple-bandgap vertical-junction architectures for ultra-efficient concentrator solar cells
Avi Braun, Alexis Vossier, Eugene A. Katz, Nicholas J. Ekins-Daukes and Jeffrey M. Gordon
DOI: 10.1039/C2EE22167E