| Abstract Scope |
Composite nanostructures are efficient for Sunlight detection and conversion. In most systems, like photodetectors, excitonic solar cells and (photo)-electrochemical cells, nanomaterials can play a critical role in boosting photoconversion efficiency by ameliorating the processes of charge photogeneration, dissociation and transport. Critical role is played by the interface. Several strategies can be pursued to maximize energy harvesting and storage, including broadening of light absorbance, fastening exciton dissociation and charge injection. Some examples will be discussed, including all-oxide p-n nanowire photodetectors and solar cells, core-shell quantum dot fluorophores for high-efficiency luminescent solar concentrators, composite sulfides for hydrogen generation, and oriented carbon nanotube forest dispersed in polymer matrix as efficient low-temperature thermoelectric composite. Emphasis will be given to the role of interface engineering in improving the efficiency of energy conversion in different systems, spanning from electric power generation from Sunlight, to chemical fuel production, to conversion of heat lost through thermoelectric materials. |