Energy band alignment at the heterointerface between a nanostructured TiO2 layer and Au22(SG)18 clusters: relevance to metal-cluster-sensitized solar cells

XPS study of the electronic structure of the Au₂₂(SG)₁₈ clusters and their interface with TiO₂ reveals that tailoring of the electronic band structure at the interface can be exploited to increase the efficiency of metal-cluster-sensitized solar cells.