Dye-sensitized solar cell (DSSC) efficiencies have not significantly improved in recent years, primarily because of their single band gap design, limitations in dye absorption energies, and the Shockley-Queisser (SQ) limit. DSSCs require an incident energy in the visible spectrum for the cell to produce a useable electrical current. While the possibility of absorbing two near-infrared photons is a known concept for surmounting the SQ limit, the opportunities presented by mesoporous systems for creating such a sensitizer do not appear to have been studied. By incorporating carborane cluster-based macrocyclic compounds as "electron reservoirs," a number of the inherent limitations in DSSC systems can be potentially circumvented, including extending the useable photon energy into the IR region by using a multi-photon, multi-step mechanism. Thus, effectively surmounting the SQ limit. In this paper, our work towards the synthesis of this prototype carborane macrocyclic system will be presented in detail.
ASJC Scopus subject areas
- Chemical Engineering(all)