The integration of functional catalysts with light absorbers is a key area of research within Solar Fuels research. Such catalysts may be molecular, metallic or materials based, and used for H2 or CO2 conversion reactions. In our work, we have functionalized Si(111) photo-electrodes with custom-designed molecular wires that act as linkers as well as conduits for electron transfer. Spacing of the linkers can be controlled based on modular spacing arms at the periphery of the linker. To further passivate the surface, we have utilized atomic layer deposition (ALD) of 0-100 angstroms of aluminum oxide (Al2O3). Photoelectrochemical results show results in a stable, competent photoelectrode in organic and aqueous solvents. We will present results of linker synthesis, attachment, hybrid material characterization, and photoelectrochemistry of the devices.

Hybrid molecular/materials approach to semiconductor passivation: Molecular wires embedded in Al2O3 on Si(111) photo-electrodes

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.